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D4

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T30403 T30404
#D4

Description

USA ASTM D4 Alloy tool steel and D4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: D4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy D4 ASTM USA Alloy tool steel
T30107
A8
T30108
A9
T30109
A10
T30110
D2
D3
T30403

Chemical composition(mass fraction)(wt.%) of the D4

C(％) Si(％) Mn(％) P(％) S(％) Ni(％) Mo(％) V(%)
2.05～2.40 0.10～0.60 0.10～0.60 ≤0.030 ≤0.030 11.0～13.0 0.70～1.20 0.15～1.00

Mechanical Properties of steel grade D4

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)
757 (≥) 951 (≥) 42 24 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade D4

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
32 - -     0.33 -  
873 284 - 21.3 341   -  
787 - 12 13.2   112 332

Heat Treatment of steel grade D4

Heat treated : 1541°C - 1454°C

Technological Curves of steel grade D4

Cross Reference Table (Equivalent Grade) of D4

Grade Standard Country Application
D4 ASTM USA Alloy tool steel
SKD4 JIS Japan Hot-work die steel
STD4 KS Korea Carbide for cutting tools
STD4 KS Korea Carbide for cutting tools
ASTM CD4MCu AISI USA
D40 STAS/SR Romania Structural steel
ZGD410-620 GBT China Low alloy steel castings for general engineering and structural purposes
ZGD410-620 GBT China Low alloy steel castings for general engineering and structural purposes
CD4MCu ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
CD4MCu ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
T30403 T30404
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