1.4120 Stainless Steels to SEW 400

1.4120 - Specification & Application

  • SEW 400 - Stainless steels for rolled and forged products
  • DIN 17442 (1977) - Rolled, Wrought or Cast Stainless Steel Products for Medical Instruments

Rolled, Wrought or Cast Stainless Steel Products for Medical Instruments

Chemical composition(wt.%) of 1.4120 grade: to SEW 400

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.17 0.22
Si - 1.00
Mn - 1.00
P - 0.040
S - 0.015
Cr 12.0 14.0
Mo 0.90 1.30
Ni - 1.00

1.4120 - Detail

Rolled, Wrought or Cast Stainless Steel Products for Medical Instruments

Mechanical properties of grade 1.4120 SEW 400

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
839 (≥) 394 (≥) 44 43 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical properties of grade 1.4120 SEW 400

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
343 (≥) 654 (≥) 24 44 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 112
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
766 876 543

Equivalent Grade

We can customize the production of 1.4120 grade, contact us for the best solution.
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