About: Joann

We understand that material selection can make or break a project. It is the difference between a component that lasts for decades and one that fails prematurely under pressure. Today, we are examining one of our most versatile and trusted offerings: GB 65Mn Spring Steel.

Think of 65Mn as the reliable workhorse of the steel world. It possesses a unique balance of strength and flexibility that makes it the ideal candidate for applications where resilience is key. But what exactly goes into this material, and why should it be on your radar?

Standard and Equivalents Steel Grade

Navigating international steel standards can often feel like trying to solve a puzzle. To simplify things, our 65Mn steel adheres to the Chinese standard GB/T 1222, ensuring high-quality manufacturing and consistent properties. If your project requires international specifications, rest assured that 65Mn is fully equivalent to several global grades, ensuring seamless integration into your global supply chain.

Chemical Composition about 65Mn steel and it’s equivalent steel 

The power of 65Mn lies in its carefully balanced chemical composition. It is an alloy that uses manganese (Mn) as its secret weapon. Unlike standard carbon steel, the elevated manganese content significantly improves hardenability and strength.

But here is the critical question: How does 65Mn compare chemically to its international equivalents? Let us break it down

What Does This Comparison Tell Us?

Mechanical Properties About 65Mn Steel

This steel excels in environments requiring high elasticity and fatigue resistance. When properly heat-treated, it can withstand significant stress without permanent deformation.

Physical Properties About 65Mn Steel

Understanding the physical constants of your material is crucial for design and machining calculations.

• Density: 7.85 g/cm³ .

• Critical Temperatures: The transformation points during heating and cooling are approximately Ac1=726°C and Ac3=765°C .

Applications 

Have you ever wondered what keeps the suspension in your car smooth or what gives a measuring device its precise feedback? The answer often lies in a spring. Due to its high fatigue limit and resilience, 65Mn is the go-to material for components that live at the mechanical limits .

Its primary applications include:

• Automotive Components: Clutch springs, brake springs, and valve springs .

• General Machinery: Helical springs, compression springs, and leaf springs for load-bearing .

• Industrial Tools: Spring washers, retaining rings, and even high-wear components like grinding machine spindles and precision machine tool screws .

Sizes and Availability

At Dongguan Otai Special Steel, we believe in flexibility. This is why we can supply 65Mn in a vast array of forms to meet your specific production needs .

• Round Bars: Diameters from Ø 2mm to 3000mm.

• Flat Bars & Plates: Thickness from 2mm to 3000mm, with widths up to 3500mm.

• Hexagonal Bars: Sizes from 5mm to 105mm.

The Otai Advantage

Choosing 65Mn from Dongguan Otai Special Steel means choosing a partner who understands the nuances of material science. Whether you are manufacturing a delicate instrument spring or a robust industrial leaf spring, we have the stock and the expertise to support your project.

Are you ready to build something that lasts? Contact us today to discuss your requirements, request a quote, or simply to tap into our expert knowledge. Let’s engineer the perfect solution together.

Name: Joann

E-mail:joann@otaisteel.com

WhatsApp:+8613128068365

 Today, we are peeling back the layers on one of the most misunderstood yet highly utilized engineering steels in the world: DIN 16MnCr5 steel.

If you are in the automotive, heavy machinery, or general engineering sectors, you have likely encountered this grade. But have you ever stopped to consider whether you are truly getting the most out of it? Is the material you are buying today the same quality that the original German standards intended?

Understanding the Standard for DIN 16MnCr5 steel

The designation “16MnCr5” originates from the DIN EN 10084 standard, a benchmark for case-hardening steels originating from Germany. In the world of steel, the name itself tells a story.

• 16: Refers to a Carbon content of approximately 0.16%.

• Mn: Manganese (around 1.10%–1.40%).

• Cr: Chromium (around 0.90%–1.20%).

• 5: Historically, this indicated the percentage of Chromium in the old system (meaning roughly 1%).

However, the global economy runs on equivalency. If you are looking for a local alternative to the German standard, you are likely searching for the US equivalent, SAE 5115.

The equivalengt steel grade 

The Chemistry: The “Recipe” for Performance

Why does 16MnCr5 perform so well? It is all about the alloying elements. Think of the chemical composition as the recipe for a gourmet meal. The carbon provides the “spice” for hardness, but the Chromium and Manganese are the “cooking oil” and “butter” that make the heat treatment possible.

• Carbon (C): The primary hardening agent. At ~0.16%, it leaves the steel soft enough for machining but ready to be “supercharged” in the core during carburizing.

• Manganese (Mn): Increases hardenability and acts as a deoxidizer. It ensures the steel is tough and resistant to wear.

• Chromium (Cr): This is the “armor.” It increases the depth of hardening, improves corrosion resistance, and strengthens the steel at high temperatures.

Chemical Composition (Typical Values)

Mechanical & Physical Properties of DIN 16MnC5 steel

Here is where the magic happens—and where many buyers get confused. In its raw, untreated state (soft annealed), 16MnCr5 is relatively gentle. You can machine it, shape it, and drill it with ease.

However, after the case-hardening process (Carburizing + Quenching + Tempering), it transforms. The surface becomes as hard as a rock (up to 62 HRC) while the core retains the ductility of high-strength structural steel.

Imagine it as a medieval knight: the soft core is the knight, offering flexibility and resilience to survive a heavy blow. The hard case is the steel armor, deflecting the sharp blades of wear and friction.

Mechanical Properties (Reference Values)

Physical Properties

• Density: ~ 7.85 g/cm³

• Thermal Conductivity: Moderate. It dissipates heat well, which is crucial for gear teeth that generate friction.

• Machinability: Excellent in the soft state, similar to that of 1.7131 steel.

The Application of DIN 16MnCr5 Steel

If there is one steel that drives the world, it is this one. 16MnCr5 is the preferred material for the “guts” of moving machinery.

1. Automotive Transmission: Gears, camshafts, and differential gears. When you shift your car, you are relying on the strength of a steel very similar to this.

2. Heavy Industry: Gears for cranes, mining excavators, and conveyors. It handles high torque and heavy loads.

3. Machine Tools: Spindles and worms.

4. Hydraulic Components: Parts that require a wear-resistant surface against a softer, load-bearing core.

What size is available ? And how much ? 

At Dongguan Otai Special Steel, we understand that you are not just buying a piece of metal; you are buying reliability. A gear tooth that chips due to poor material quality could cost you thousands in downtime.

Available Dimensions
We offer a wide range of sizes to suit your specific manufacturing needs:

• Round Bars: Diameter from 16mm to 300mm.

• Flat Bars / Plates: Thickness from 6mm to 200mm, Width up to 500mm.

• Sections: We can also supply squares and hexagons depending on demand.

A Note on Price
We often get asked: “Why is your price different from the mill down the road?”

Think of it this way: You don’t buy a race car tire for the price of a bicycle tire. The price of 16MnCr5 is influenced by the price of Ferro-Chrome and Manganese on the global market. However, price per ton is only half the equation. The other half is the cost of failure.

At Otai, we don’t cut corners on the “grain size” or the “micro-cleanliness.” We offer competitive market rates, but we refuse to compromise on the integrity of the material to lower the price. We focus on the Value-to-Cost Ratio.

The “Steel” Questions You Should Be Asking

Before you place your next order, consider these questions:

1. “Is my application sensitive to the ‘H’ band? Do I need the hardenability to be strictly controlled?”

2. “Do I require a specific grain size to ensure my hardening process is predictable?”

3. “Who is responsible for the heat treatment? If it’s your client, we can supply the steel that is already structured for optimal case depth.”

Otai’s Processing Services

We understand that managing inventory is a headache. To save you time and machinery wear, we offer value-added services in-house.

• Precision Cutting: We cut to your desired lengths. Save 30% on material waste.

• Peeling / Turning: Need a bright, surface-finish bar for your CNC machines? We remove the black scale so you don’t have to.

• Annealing: We ensure the steel is delivered in the optimal soft state for your machining.

Technical FAQ: Quick Insights on DIN 16MnCr5 Steel

1. What is the difference between DIN 16MnCr5  and 20MnCr5?
The number “16” vs “20” indicates carbon content. 16MnCr5 is “lower carbon,” meaning it has a slightly softer core after hardening but is easier to machine. 20MnCr5 offers a stronger core but less flexibility in cold forming.

2. Can 16MnCr5 be welded?
Yes, but with care. It requires preheating (around 150-200°C) and post-weld heat treatment to prevent cracking in the heat-affected zone. It is not recommended for structural welding due to its hardenability.

3. Is 16MnCr5 stainless steel?
No. Despite containing Chromium, it is not stainless steel. The Chromium is present to increase hardenability and strength, not corrosion resistance. A protective coating or oil film is required to prevent rust.

4. What is the best surface treatment for this steel?
For gears, nitriding or carburizing is the standard. Carburizing provides the deepest, hardest case, ideal for high-torque applications.

Disclaimer: The technical data provided in this article is for informational purposes only and is based on standard specifications. Mechanical properties can vary depending on heat treatment and section size. Dongguan Otai Special Steel advises customers to conduct their own trials to ensure suitability for their specific applications.

Name: Joann

E-mail:joann@otaisteel.com

WhatsApp:+8613128068365

1.2083 ( X40Cr14) steel is belong to German standard EN ISO 4957-2000 which is a plastic mold steel. 1.2083 steel equivalent to the AISI 420,GB 4Cr13 and the JIS SUS420J2 . This material is a high-chromium martensitic stainless steel, belonging to the category of plastic mold steels. Its core characteristics are high hardness, excellent corrosion resistance, and polishing performance. It is typically with annealed condition, with a hardness of approximately 215-245 HB.

What Exactly is 1.2083 Steel?

In simple terms, 1.2083 is a martensitic stainless steel renowned for its exceptional combination of corrosion resistance, wear resistance, and high hardness . Think of it as the “bodyguard” of the plastics industry . It is specifically designed to withstand the harsh, corrosive environments often found in plastic molding, particularly when processing materials like PVC which release acidic gases .

Its secret lies in its chemical composition. With a high Chromium content (around 13%) and a carefully balanced carbon level, it offers the best of both worlds: the durability of a tool steel and the corrosion resistance of stainless steel .

The Global Family: 1.2083 Steel Equivalent

One of the most common questions we encounter is about the different names for this steel. In short, it has different names all over the world. Understanding these equivalents is crucial for sourcing material and ensuring you are getting the right product for your application.

To make this clear, here is a quick reference table of 1.2083 steel equivalents :

Chemicial composition for 1.2083 Steel Equivalent

Let’s look under the hood at the 1.2083 chemical composition. It is this precise blend of elements that gives the steel its unique properties .

Key Properties: Hardness, Polishability, and Corrosion Resistance

What makes 1.2083 steel a front-runner in its class? It’s a trifecta of performance features .

• Corrosion Resistance: Thanks to its high Chromium content, it resists moisture, weak acids, and the aggressive environments generated during the processing of corrosive plastics . It’s important to note that its best corrosion resistance is achieved when the surface is hardened, ground, and polished .

• High Hardness & Wear Resistance: This steel can be hardened up to 48-55 HRC. This high hardness translates to excellent wear resistance, meaning molds made from 1.2083 have a longer lifespan and require less maintenance .

• Excellent Polishability: This is a key advantage. It can be polished to a mirror finish (Ra ≤ 0.05 μm), which is absolutely essential for producing high-gloss plastic parts, such as optical lenses or cosmetic packaging .

 Key Applications

The unique properties of 1.2083 steel make it the go-to material for a variety of demanding applications .

• Plastic Molds: This is its primary use. It is ideal for molds requiring high wear resistance and corrosion resistance, especially for PVC, POM, and flame-retardant plastics which release corrosive gases .

• Transparent Plastic Molds: Its superior polishability makes it perfect for creating clear, transparent products like optical components, lenses, and CD molds .

• Medical Technology: Its corrosion resistance and ability to maintain a sterile surface make it suitable for medical instruments and equipment .

• Food Processing: It is used in equipment where hygiene and corrosion resistance are paramount .

Technical Data at a Glance

Here are some key physical and mechanical properties for your reference .

What about Size and Price?

At Otai Special Steel, we supply 1.2083 steel in a wide range of shapes and sizes to fit your specific project needs . We offer round bars from 8mm to 500mm diameter and flat bars from 6mm to 500mm thickness. Furthermore, we can customize sizes according to your request.

Regarding 1.2083 steel price, it offers a favorable balance between performance and affordability. While prices can fluctuate based on market conditions, size, and quantity, 1.2083 is known for its cost-effectiveness, often offering a better price-to-performance ratio than higher-end grades like 1.2316 . Its cost-effectiveness, combined with its extended tool life, makes it a smart investment in the competitive molding industry.

1.2083 vs. 1.2316: Which One is Right for You?

A question we often get is how 1.2083 compares to 1.2316. While both are stainless mold steels, they have distinct personalities. To put it simply, 1.2083 is for hardness and wear resistance, while 1.2316 is for superior corrosion resistance and toughness .

Think of it this way: 1.2083 is a reliable raincoat, perfect for a shower. 1.2316, on the other hand, is a full storm jacket, better for a downpour .

• Choose 1.2083 if: You process standard plastics (ABS, PP, PE), need maximum hardness and wear resistance, and your budget is a primary concern.

• Choose 1.2316 if: You process highly corrosive materials (PVC, POM), your workshop is in a humid environment, and you need maximum protection and longer maintenance intervals.

Conclusion: The Smart Choice for Molding Excellence

DIN 1.2083 steel stands as a reliable, high-performance pillar in the tool steel industry. Its unique combination of excellent corrosion resistance, high hardness, and outstanding polishability makes it the undisputed champion for a vast range of plastic molding applications.

Name: Joann

E-mail:joann@otaisteel.com

WhatsApp:+8613128068365

What Exactly Is O1  Steel?

Let’s start with a simple truth: O1 steel is not a mystery. It is a low-alloy, cold-work tool steel that must be oil-quenched during heat treatment. That is why many engineers simply call it “oil-hardening steel.”

Think of it this way: If water-hardening steels are like racing bikes—fast but brittle—then O1 is like a luxury sedan. Smooth, predictable, and forgiving.

Tools and dies made from O1 flat bars or round bars deliver good wear resistance and strong abrasive qualities. Why? Because the tungsten and higher chromium content work together like a shield against friction. In addition, ASTM A681 O1 tool steel offers deep hardening properties, a fine grain structure, and unusual toughness for its class.

Here is a rhetorical question for you: *Would you trust a brittle die to run a 10,000-part production run?* Probably not. That is exactly why machinists and toolmakers choose O1.

At Dongguan Otai Special Steel, we are not just another supplier. We are a better choice—offering reliable quality, responsive sales service, and full traceability. Our AISI O1 tool steel is available in decarb-free rounds, flats, squares, ground flat stock, and drill rod. Need a custom size? We deliver.

1. Supply Range of AISI O1 Tool Steel (What We Actually Stock)

No more searching for sizes that do not exist. Here is our real inventory:

Need something outside this range? Just ask. We cut, grind, and ship globally.

2. Relevant Steel Specifications of AISI O1 Tool Steel

You may see different names on different blueprints. Do not let that confuse you. Here are the direct equivalents we supply at Otai:

So, if your customer asks for 1.2510 or SKS3, relax. You have found the right material.

3. Chemical Composition & Equivalents (The Honest Recipe)

Why does O1 perform so consistently? Because its chemistry is balanced like a good recipe. Let me show you the numbers we certify:

Notice the tungsten (W) and chromium (Cr)? Those are your wear-resistant heroes. They give O1 its edge-holding ability without making it impossible to machine.

4. Mechanical Properties (What You Really Care About)

Let’s skip the fluff. Here is how O1 performs under real shop conditions:

Have you ever calculated how much downtime a broken punch costs you? A higher compressive strength means fewer surprises.

5. Physical & Thermal Properties

These numbers matter when you are designing dies that run hot or cold. O1 stays stable.

6. Forging – Do It Right, or Pay Twice

Heat O1 slowly and uniformly. Forging temperature: 980-1000°C. Do not forge below 800°C. After forging, cool slowly in lime, dry ashes, or a furnace. Then—and this is critical—always anneal before re-hardening.

Think of it like baking bread: Skip the resting step, and the texture fails. Same logic applies here.

7. Heat Treatment – The Heart of O1  Steel Performance

Anneal (Softening)

Heat slowly (max 222°C per hour) to 802-816°C. Hold 1 hour per 25mm thickness (2 hours minimum). Cool slowly with the furnace at max 28°C per hour down to 538°C, then air cool. Result: max 212 HB.

Hardening (Making It Strong)

• Preheat: 1100-1200°F

• Austenitize: 1475-1500°F. Soak 30 minutes per inch of thickness.

• Quench: In warm oil. Cool until 125-150°F (or until you can hold it in a bare hand).

• Temper immediately. Yes, immediately. Do not wait.

Tempering

Single temper is usually enough. But double tempering? Sometimes better. Soak 2 hours per inch of thickness each time. Air cool between tempers. Normal range: 300-450°F.

Stress Relief After Grinding or EDM

Use a temperature 25-50°F lower than your last tempering temperature. This small step prevents cracking. Ignore it at your own risk.

8. Applications – Where Does O1 Actually Shine?

O1 is designed for short to medium run tooling at ambient temperatures. Think of it as the reliable employee who never complains.

Typical applications include:

• Blanking dies

• Forming dies

• Trim dies

• Gauges

• Slitting cutters

• Punches

• Bolster dies

• Knock-out pins

• Thread roll dies

• Bending dies

• Plastic mold dies (short runs)

• Shims, cams, machine ways

• Jigs and cutter templates

• Swaging dies

*Can you use O1 for high-speed stamping of abrasive materials?* Probably not—that is D2 or M2 territory. But for everyday precision tooling? O1 is your answer.

9. Why Otai Is a Better Choice

You have many options for buying tool steel. I will give you three reasons to choose us:

1. Reliable quality. Every batch comes with a mill test certificate. No guessing.

2. Real stock. Not a virtual inventory. We hold actual rounds, flats, plates, and ground stock.

3. Sales service that responds. Ask a question. Get an answer. Simple.

We also offer promotions and O1 tool steel for sale regularly. Want to know the current price? Just leave a comment below or send us an enquiry.

Final Word – Let’s Talk

O1 steel is not glamorous. It does not have the highest wear resistance or the longest tool life of all steels. But it offers something better: predictability, ease of heat treatment, and forgiving machining.

If you are building short-run tooling, jigs, or punches, O1 will save you time and frustration.

So, here is my final question: *Why struggle with complicated air-hardening steels or brittle water-hardening grades when O1 sits right in the sweet spot?*

Request your quote today. Tell us your size, quantity, and delivery port. We will respond within 4 hours.

Dongguan Otai Special Steel – Your precision starts with our material.

Name: Joann

E-mail:joann@otaisteel.com

WhatsApp:+8613128068365

Let me ask you a straight question: Are you overpaying for corrosion protection you don’t need—or under-buying and risking mold failure?

That’s the real battle between DIN 1.2083 and DIN 1.2316. Both are stainless mold steels. Both resist rust. But they are not twins—more like cousins with different personalities.

At Dongguan Otai Special Steel, we see customers hesitate between these two every single week. So let me cut through the confusion. Here is the honest, side-by-side comparison.

Quick Overview: DIN 1.2083 vs DIN 1.2316

Chemical composition compare

Both grades contain high chromium for rust protection. But DIN 1.2316 adds molybdenum. That single change shifts the battlefield entirely.

Think of molybdenum as the bodyguard of the steel. It fights off pitting corrosion from acidic gases (like PVC or POM) and chloride ions. 1.2083 has no bodyguard—just a good raincoat.

Corrosion Comparison: DIN 1.2083 vs DIN 1.2316

Here’s the short answer: Both resist rust. But 1.2316 fights harder, especially in aggressive environments.

Think of it this way:

• 1.2083 = A good raincoat. Fine for a shower.

• 1.2316 = A full storm jacket with a hood. Better for a downpour.

Why the difference? It comes down to chemistry. Let me show you.

The Practical Bottom Line

Mechanical & Physical 

Stronger doesn’t always mean better. Let me show you the trade-offs.

So 1.2083 gets harder and resists abrasion better. 1.2316 is tougher and less likely to crack under impact.

Application Guide: Which One Do You Actually Need?

Let me save you time and money.

Choose DIN 1.2083 if:

• Your workshop stays dry and climate-controlled.

• You process standard plastics (ABS, PP, PE, PS).

• You need maximum hardness and wear resistance.

• Your budget is tight.

• Mold life requirement is under 500,000 shots.

Choose DIN 1.2316 if:

• You run PVC, POM, or flame-retardant plastics.

• Your factory or storage area has high humidity.

• You want longer maintenance intervals (less polishing/staining).

• The mold must stay mirror-bright for years.

• You can accept slightly lower hardness for better toughness.

Price vs. Value

1.2316 typically costs 30–50% more than 1.2083 per kilogram. Is it worth it? That depends entirely on your application.

Ask yourself these two questions:

1. How much would one rust-related mold failure cost you in downtime?

2. How many production cycles do you need before the next maintenance?

If the answer to question #1 is “thousands of dollars,” buy 1.2316.

If you need 2 million shots from a PVC mold, 1.2316 pays for itself.

If you run ABS in a clean room? 1.2083 is your smart, economical choice.

Final Verdict: No Absolute Winner—Only the Right Fit

I won’t tell you one grade always beats the other. That would be dishonest.

• 1.2083 wins on: Hardness, wear resistance, and price.

• 1.2316 wins on: Corrosion resistance, toughness, and polish durability.

So here’s my closing question for you: What environment will your mold live in, and what plastic will it digest?

Answer those two questions honestly, and the choice between 1.2083 and 1.2316 becomes crystal clear.

Need help deciding? At Dongguan Otai Special Steel, we supply both grades in rounds, flats, and plates—cut to size, heat-treated if needed. Contact us with your application details, and we’ll recommend the grade that saves you money without cutting corners.

Name: Joann

E-mail:joann@otaisteel.com

WhatsApp:+8613128068365

Have you ever watched a stainless steel kitchen knife resist rust after hundreds of washes? That’s the kind of reliability we build into 1.2083 steel. At Dongguan Otai Special Steel, we see this material as the bodyguard of the plastics industry—tough, clean, and ready for harsh conditions.

Let’s cut to the chase. DIN 1.2083 is a martensitic stainless mold steel, widely known as the go-to choice for processing corrosive plastics. But what exactly makes it so special? Think of it as the gym trainer of steel grades: high hardness, good wear resistance, and outstanding resistance to acidic byproducts.

In simple terms,DIN 1.2083 is the German DIN standard ISO EN 4957  steel grade. It is a stainless and mold steel . Globally, you might hear it called by different names:

Chemical Composition of 1.2083 steel and it’s equivalent grade

Why does it fight rust so well? Let’s look at its DNA—the chemical composition. Every element plays a role, like musicians in a band.

Mechanical Properties (How It Behaves Under Load)

Here’s the trade-off: When you harden DIN 1.2083 , it becomes incredibly strong—like turning soft clay into ceramic tile. But you lose ductility. That’s perfectly fine for molds. Molds don’t bend; they resist wear and pressure.

Physical Properties (The Hidden Constants)

These numbers rarely change with heat treatment. They are the steel’s fingerprint—essential if you’re simulating cooling rates, ejection pin friction, or cycle times.

Where Should You Use DIN 1.2083 ? (Applications)

Here’s where this steel truly shines. It’s not for heavy-impact parts like a hammer—but for precision, wet, or acidic environments? Absolutely.

• Molds for corrosive plastics – PVC, POM, and flame-retardant materials (they release aggressive gases).

• Medical equipment molds – Because hygiene and rust-resistance are non-negotiable.

• Food-contact molds – Think yogurt cups, bottle caps, and kitchenware.

• Injection nozzles and extrusion screws – Where wear meets acid.

• Optical lens molds – Thanks to its superior polishability.

Still wondering: Can I use standard tool steel here instead? You could… but expect rust spots within weeks. That’s like using a paper umbrella in a typhoon.

DIN 1.2083 Available Sizes from Otai Special Steel

We stock 1.2083 in multiple forms to save you time on machining:

Need a specific length? We cut to order—no waste, no waiting.

Price & Cost Considerations

Let’s talk money honestly. 1.2083 is mid-priced in the mold steel family. It costs more than regular mould steel (like 1.2311) but significantly less than high-performance powder metallurgy steels (like 1.2083 VICTORY ESR).

• Budget range: ~$1.8–$3.5 USD per kg, depending on size, quantity, and heat treatment.

• Value tip: For large molds, we recommend ESR (Electro Slag Remelting) grade—higher cost but fewer inclusions and better mirror polish.

Think of it this way: Standard 1.2083 is a reliable sedan. ESR version is a luxury sports car. Both drive; one just handles corners better.

Why Buy DIN 1.2083 from Dongguan Otai Special Steel?

Because we don’t just sell steel—we solve problems. Every batch comes with a mill certificate. We offer cutting, heat treatment (pre-hardening to 280-320 HB or full hard to 50 HRC), and delivery worldwide from our Dongguan warehouse.

One final question: Is your current mold failing due to rust or poor polish? Then why keep patching the problem when 1.2083 can erase it?

Ready to upgrade? Contact Otai Special Steel today—we’ll help you choose the right size, condition, and price for your next precision mold project.

Name: Joann

E-mail:joann@otaisteel.com

WhatsApp:+8613128068365

Have you ever tried to bend a steel bar that simply refuses to move? That is the kind of resistance we are talking about with DIN 1.2767. In the world of tool steels, this material is not just another player on the bench—it is the heavyweight champion of toughness and strength.

So, what exactly is DIN 1.2767 steel ? In simple terms, it is a nickel-chromium-molybdenum alloyed steel. It is often referred to by its common alias: 45NiCrMo16. Think of it as the steel equivalent of a reinforced concrete beam—strong on its own, but with a hidden structure that makes it nearly unbreakable under impact.

Standard and Equivalents

Standard	Grade Name
DIN (Germany)	1.2767
AISI (USA)	6F7 (similar, but not identical)
JIS (Japan)	SKT 5
Other Common Name	45NiCrMo16/ X45NiCrMo4

A quick note: while 1.2767 behaves similarly to AISI 6F7, we always recommend verifying your specific application requirements. Let’s just say they are cousins, not twins.

Chemical Composition  (wt%)

Why does this matter? The high nickel content is the secret sauce. It gives the steel extraordinary ductility—imagine stretching a rubber band versus snapping a twig. 1.2767 bends before it breaks.

Mechanical Properties (Heat Treated)

Technical Properties Worth Knowing

• High hardenability: Air or oil quenching works beautifully. No need for water quenching, which reduces distortion.

• Excellent polishability: Perfect for plastic mold cavities that need a mirror finish.

• Good wear resistance: Not in the D2 or M2 class, but more than enough for high-impact applications.

Typical Application

Where would you actually use DIN 1.2767 steel ? Imagine high-stress tools like:

• Injection molding tooling for abrasive plastics (e.g., glass fiber reinforced)

• Shearing blades

• Master molds and dies

• Extrusion tools

• Calendering rolls

In other words, if your tool takes repeated heavy punches, DIN 1.2767 steel is your ring. It is also widely used in automotive stamping dies and food processing machinery where both strength and corrosion resistance (from nickel) matter.

Available Sizes from Otai Special Steel

We supply 1.2767 in the following forms (subject to stock):

• Rounds: 8mm – 800mm diameter

• Flats / Blocks: Thickness 20mm – 500mm, Width up to 800mm

• Plates: Cut-to-size service available

All material is supplied in the soft annealed condition unless otherwise requested. Need pre-cutting, grinding, or heat treatment? Just ask.

Price Consideration

Is 1.2767 expensive? That depends on your benchmark. Compared to standard mold steel like P20, yes—it costs more. Compared to high-speed steel like M2, it is very competitive. Think of it as an investment in fewer tool failures and less downtime. We price per kilogram, with discounts for full mill batches. Contact us for a live quote based on your exact dimensions.

Why Choose  Otai?

Because we don’t just sell steel. We help you match the right steel to your problem. Have a tool that keeps cracking? That is a conversation worth having.

Ready to upgrade your tooling’s backbone? Get in touch today.

Name: Joann

E-mail:joann@otaisteel.com

WhatsApp:+8613128068365