DIN 1.2344 mold steel is also known as H13 steel , for some large size , customers will request DIN1.2344 ESR. It is a commonly used hot work die steel in the world. This steel has good toughness, good thermal strength, thermal fatigue performance and certain wear resistance. DIN 1.2344 is air-cooled hardened steel and has the advantage of small heat treatment deformation. It usually applied to in manufacture die-casting molds for aluminum castings, hot extrusion dies, tools for punching, mandrels, press forging dies, plastic molds, etc. DIN 1.2344 steel also widely used in die-casting molds for aluminum, copper and their alloys.In China, 1.2344 mold steel is equivalent to GB 4Cr5MoSiV1 steel.
DIN 1.2344 ESR form through a steelmaking process, such as EAF+LF+VD, and then through an electroslag remelting (ESR) process. After ESR, the steel is denser and the surface is smoother. After ESR, the steel has uniform material, with below advantages:
A:Good hardenability. B: good cutting processability and polishing performance. C:High toughness and plasticity. D: Good high and low temperature wear resistance. E: High temperature fatigue resistance. F:Good heat resistance and impact resistance.
1.2344 Chemical composition of mold steel and equivalent materials
| ASTM A681 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| H13 | 0.32 | 0.45 | 0.2 | 0.6 | 0.03 | 0.03 | 0.8 | 1.25 | 4.75 | 5.5 | 0.8 | 1.2 | 1.1 | 1.75 |
| DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| 1.2344 /X40CrMoV5-1 | 0.35 | 0.42 | 0.25 | 0.5 | 0.03 | 0.02 | 0.8 | 1.2 | 4.8 | 5.5 | 0.85 | 1.15 | 1.1 | 1.5 |
| JIS G4404 | C | Mn | P | S | Si | Cr | V | Mo | ||||||
| SKD61 | 0.35 | 0.42 | 0.25 | 0.5 | 0.03 | 0.02 | 0.8 | 1.2 | 4.8 | 5.5 | 0.8 | 1.15 | 1.0 | 1.5 |
1.2344 Heat treatment:
| Item | Tempeature/℃ | Cooling Medium | Hardness |
| Annealing | 750～800 | ≤20℃/h cool slowly in furnace to 500℃，air cooling | ≤235HB |
| Quenching | 1020～1050 | Oil Or Air Or Warm bath | 56-58HRC |
| Termpring | 530～600 | Air | 45-50HRC |
Physical properties (average values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 215Density [g/cm31: 7.78
Thermal conductivity [W/m.K]: 25.0
Electric resistivity [Ohm mm’/m]: 0.52
Specific heat capacity[J/g.k]: 0.46
Thermal conductivity [W/m.K]M
| 20°C | 500°C | 600°C |
| 25 | 28.5 | 29.3 |
Density [g/cm3]
| 20°C | 500°C | 600°C |
| 7.78 | 7.64 | 7.60 |
Electric resistivity [Ohm mm2/m]
| 20°C | 500°C | 600°C |
| 0.52 | 0.86 | 0.96 |
Specific heat capacity[J/g.K]
| 20°C | 500°C | 600°C |
| 0.46 | 0.55 | 0.59 |
Coefficient of Linear Thermal Expansion 10-6 0C-1
| 20-100° | 20-200°C | 20-300°C | 20-400°C | 20-500°C | 20-600°C | 20-700°C | 20-800°C |
| 10.7 | 11.9 | 12.2 | 12.5 | 12.7 | 13.1 | 13.5 | 13.7 |
DIN 1.2344 Mechanical properties
| Properties | Metric | Imperial |
| Tensile strength, ultimate (@20°C/68°F, varies with heat treatment) | 1200 – 1590 MPa | 174000 – 231000 psi |
| Tensile strength, yield (@20°C/68°F, varies with heat treatment) | 1000 – 1380 MPa | 145000 – 200000 psi |
| Reduction of area (@20°C/68°F) | 50.00% | 50.00% |
| Modulus of elasticity (@20°C/68°F) | 215 GPa | 31200 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
DIN 1.2344 ESR Applications
1.2344 mold steel is widely used in manufacturing various molds and tools such as plastic molds, die-casting molds, hot pressing molds, cold extrusion molds, etc.
1.2344 hot work die steel is mainly used in: hot forging dies with high life requirements; light alloy die-casting dies; molds and mold inserts; hot extrusion dies; hot shear blades; Pilgrim mandrels and calipers; mold components (such as worm gears) , cylinder, nozzle), etc.
DIN 1.2344 ESR Application areas
1. Automobile industry
In the automotive industry, 1.2344 mold steel is widely used in the production of automotive parts. For example, molds for manufacturing automobile engines and transmissions, as well as molds for automobile chassis and bodies, etc. Molds made of 1.2344 mold steel not only have excellent wear resistance and thermal stability, but also can withstand high-intensity impact loads, thereby ensuring the production accuracy and quality of automotive parts.
2. Aerospace industry
In the aerospace industry, 1.2344 mold steel is used in the production of various complex components, such as aircraft engine impellers, turbines, etc., as well as rocket engine guide rudders, nozzles, etc. The excellent characteristics of 1.2344 mold steel ensure the durability and stability of these components in high temperature and high pressure environments, ensuring the safety and operating efficiency of the aircraft.
3. Electronics industry
In the electronics industry, 1.2344 mold steel is widely used in the production of casings, keyboards, displays and other components for mobile phones, computers and other electronic products. Due to the strong hardness and wear resistance of 1.2344 mold steel, it gyarntee the quality and life of these parts .
4. Medical industry
In the medical industry, 1.2344 mold steel is used to produce a variety of medical devices, such as scalpels, orthotics, prosthetics, etc. These medical devices require high strength and high wear resistance, and 1.2344 mold steel can meet these requirements.
1.2344 ESR Mold steel price
To understand the approximate price range of mold steel, you need to consider factors such as imported and domestic choices, required specifications and quantities. In addition, factors such as include transportation distance, processing requirements, and whether tax will also affect the price. In order to obtain accurate price information, please contact us and we will provide you with a detailed quotation.
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