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America AISI AISID-7 Tool and die steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: AISID-7 / AISI D-7
Category Grade Standard Region/Area Standard Content
Metals AISI D-7 SAE J 438 America Tool and die steels

Chemical composition(mass fraction)(wt.%) of the AISI D-7

Element Min Max Similar
V 3.8000 4.4000 -
Si 0.1000 0.6000 -
S - 0.0300 -
P - 0.0300 -
Ni+Cu - 0.7500 -
Mo 0.7000 1.2000 -
Mn 0.1000 0.6000 -
Cr 11.5000 13.5000 -
C 2.1500 2.5000 -
V 3.8000 4.4000 -
Si 0.3000 0.5000 -
Mo 0.7000 1.2000 -
Mn 0.3000 0.5000 -
Cr 11.5000 13.5000 -
C 2.1500 2.5000 -

Mechanical Properties of steel grade AISI D-7

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)
532 (≥) 941 (≥) 33 32 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade AISI D-7

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
24 - -     0.23 -  
483 561 - 43.3 422   -  
949 - 24 34.2   342 333

Heat Treatment of steel grade AISI D-7

Heat treated : 1593°C - 1255°C

Technological Curves of steel grade AISI D-7

Cross Reference Table (Equivalent Grade) of AISI D-7

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