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S4

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T41902 T41904
#S4

Description

USA ASTM S4 Alloy tool steel and S4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: S4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy S4 ASTM USA Alloy tool steel
T31502
O6
T31506
O7
T31507
S1
ASTM A182 F55
T41901
S2
T41902

Chemical composition(mass fraction)(wt.%) of the S4

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) V(%)
0.50～0.65 1.75～2.25 0.60～0.95 ≤0.030 ≤0.030 0.10～0.50 0.15～0.35

Mechanical Properties of steel grade S4

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)
543 (≥) 672 (≥) 42 41 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade S4

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
22 - -     0.14 -  
333 972 - 34.3 312   -  
284 - 11 43.2   131 232

Heat Treatment of steel grade S4

Heat treated : 1379°C - 1462°C

Technological Curves of steel grade S4

Cross Reference Table (Equivalent Grade) of S4

Grade Standard Country Application
S4 ASTM USA Alloy tool steel
SS440 JIS Japan SS440
SKS4 JIS Japan shock-resistant steel
SKS41 JIS Japan shock-resistant steel
SKS43 JIS Japan shock-resistant steel
SKS44 JIS Japan shock-resistant steel
TS4 AFNOR France Carbide for cutting tools
TS4 AFNOR France Carbide for cutting tools
S40 AFNOR France Carbide for cutting tools
S40 AFNOR France Carbide for cutting tools
STS4 KS Korea Carbide for cutting tools
STS4 KS Korea Carbide for cutting tools
STS4 KS Korea Carbide for cutting tools
STS4 KS Korea Carbide for cutting tools
STS41 KS Korea Carbide for cutting tools
STS41 KS Korea Carbide for cutting tools
STS43 KS Sweden Carbide for cutting tools
STS43 KS Sweden Carbide for cutting tools
STS44 KS Korea Carbide for cutting tools
STS44 KS Korea Carbide for cutting tools
T41902 T41904
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Jiangyou Longhai Special Steel Co.,Ltd.

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