1.4112 is a high-carbon, high-chromium member of the stainless steel series. Due to its high carbon content, it provides high mechanical strength values as well as corrosion resistance after heat treatment. Good hardening and wear resistance. But it also sacrifices corrosion resistance due to the higher carbon content . 1.4112(X90CrMoV18) commonly known as AISI 440B.

Standard:

DIN EN 10088-3

Chemical composition

Standard Grade C Si Mn S P  Cr Mo
DIN EN10088-3 1.4112 0.85-0.95 Max1.00 Max1.00 Max0.030 Max0.040 17.00-19.00 0.90-1.30
ASTM A 276 – 10 440B 0.75-0.95 Max1.00 Max1.00 Max0.030 Max0.040 16.00-18.00 Max0.75

1.4112 material has a good capability of getting hardness. It containes ~%0.95 carbon element and because of high carbon, this grade is really good grade for high hardness. But since it contains ~%0.95 carbon, its corrosion resistance is not soo good.

Physical properties and mechanical propeties of 1.4112 stainless steel

  • Thermal conductivity, λ20℃: 15 W * m-1 * K-1
  • Linear expansion coefficient, α = 10,4 * 10-6 * K-1
  • Heat capacity, cp = 430 J * kg-1 * K-1
  • Resistance: 0,8 mkOhm * m
  • Modulus of elasticity, E = 215 GPa
  • Density = 7,7 g/cm3
  • Hardness in annealed condition +1C, +1E, +1D, +1X, +1G, +2D: < 285HB
  • Hardness after hardening and tempering of steel 1.4112 : 55-57 HRC

1.4112 stainless steel application Application of 1.4112 stainless steel

1.4112 stainless steel is used in the manufacture of a variety of cutting tools, bearings, gauges, molds, valve components, blades.  And widely used in measuring instruments that require corrosion resistance in applications requiring both wear and corrosion resistance. Used in glass moulds, pumps and plastics industry.