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AWS 1.4120 Details

1.4120 Application:Rolled, Wrought or Cast Stainless Steel Products for Medical Instruments

Category Type Grade Designations
Grades Stainless Steels 1.4120 Germany - AWS , SEW 400 - Stainless steels for rolled and forged products
DIN 17442 (1977) - Rolled, Wrought or Cast Stainless Steel Products for Medical Instruments

Chemical composition(wt.%) of 1.4120 grade: 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
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)
762 (≥) 721 (≥) 32 42 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

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
371 (≥) 724 (≥) 34 22 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 132
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
141 155 626

1.4120 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
X20CrMo13 AWS Germany
Rolled, Wrought or Cast Stainless Steel Products for Medical Instruments
1.4120 AWS Germany
Rolled, Wrought or Cast Stainless Steel Products for Medical Instruments

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