1.6957 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.6957

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DIN 1.6957

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This page is mainly introduced the 1.6957 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.6957,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steels for larger forgings for components in turbine and generator installations
  • Steel Garde:1.6957
  • Type:Tool Steels & Die Steels
  • Country:Germany
  • Standard:DIN
  • Standard Number:
    ITEM Standard Number Descriptions
    1 SEW 555 Steels for larger forgings for components in turbine and generator installations
  • Metallographic Structure:Austenite
  • Application:Steels for larger forgings for components in turbine and generator installations

Cross Reference Table(Equivalent Materials):

Material Standard Country
26NiCrMoV14-5 SEW Germany

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤)
C   0.28
Si   0.25
Mn   0.40
P   0.010
S   0.010
Cr 1.40  1.80
Ni 3.40  3.80
Mo 0.30  0.45
V   0.15
Al   0.025

Mechanical Properties

Tensile strength 888~276 σb/MPa
Yield Strength 582 σ 0.2 ≥/MPa
Elongation 38 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 232~381 -
HRC 30 -

Physical Properties

Thermal expansion 15-37 e-6/K
Thermal conductivity 47-42 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1474-7168 째C
Density 7824-5650 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
1.6957 Tool Steels & Die Steels Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download

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