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Description

Germany DIN 1.3257 High-speed tool steel and 1.3257 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: 1.3257
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy 1.3257 DIN Germany High-speed tool steel
1.3245
S7-4-2-5
1.3246
S2-10-1-8
1.3247
S2-9-2-8
1.3249
S18-1-2-5
1.3255
S18-1-2-15

Chemical composition(mass fraction)(wt.%) of the 1.3257

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Mo(%) V(%) W(%) Co(%)
0.60-0.70 Max 0.45 Max 0.40 Max 0.030 Max 0.030 3.80-4.50 0.50-1.00 14.0-17.0 17.50-18.50 15.00-16.00

Mechanical Properties of steel grade 1.3257

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
446 (≥) 395 (≥) 42 23 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade 1.3257

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
21 - -     0.41 -  
866 883 - 41.3 212   -  
487 - 14 11.2   213 422

Heat Treatment of steel grade 1.3257

Heat treated : 1826°C - 1791°C

Technological Curves of steel grade 1.3257

Cross Reference Table (Equivalent Grade) of 1.3257

Grade Standard Country Application
1.3257 DIN Germany High-speed tool steel

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