SKS 21

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Japan JIS SKS21 合金工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SKS21 / SKS 21

Category	Grade	Standard	Region/Area	Standard Content
Metals	SKS 21	JIS G4404	Japan	合金工具钢

Chemical composition(mass fraction)(wt.%) of the SKS 21

Element	Min	Max	Similar

The data is being updated,

Mechanical Properties of steel grade SKS 21

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
654 (≥)	435 (≥)	31	24	41	Solution and Aging, Annealing, Ausaging, Q+T,etc	133

Physical Properties of steel grade SKS 21

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
31	-	-			0.41	-
991	665	-	43.3	244		-
831	-	31	14.2			412	142

Heat Treatment of steel grade SKS 21

Heat treated : 1456°C - 1328°C

Technological Curves of steel grade SKS 21

No Curve

Cross Reference Table (Equivalent Grade) of SKS 21

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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