SKD 4

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#SKD #4

Description

SKD 4 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: SKD 4

Category	Type	Steel Grade
Steel Grades	Tool Steel	SKD 4
		SKS 95
		SKD 1
		X210Cr12
		SKD 2
		X210CrW12
		SKD 10
		X153CrMoV12
		SKD 11
		SKD 12
		100CrMoV5

Chemical composition(mass fraction)(wt.%) of the SKD 4

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.25-0.35	0.4	0.6	0.03	0.02	2.0-3.0	≤ 0.25
Mo	Al	Cu	Nb	Ti	V	Ce
		≤0.25			0.3-0.5
N	Co	Pb	W	Other
			5.0-6.0

Mechanical Properties of steel grade SKD 4

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)
625 (≥)	441 (≥)	31	23	31	Solution and Aging, Annealing, Ausaging, Q+T,etc	324

Physical Properties of steel grade SKD 4

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
41	-	-			0.12	-
968	326	-	22.3	212		-
732	-	11	41.2			323	434

Heat Treatment of steel grade SKD 4

Heat treated : 1675°C - 1985°C

Technological Curves of steel grade SKD 4

No Curve

Cross Reference Table (Equivalent Grade) of SKD 4

Grade	Standard	Country	Application
SKD1	JIS	Japan	Cold Work Die Steel
SKD2	JIS	Japan	Cold Work Die Steel
SKD11	JIS	Japan	Cold Work Die Steel
SKD12	JIS	Japan	Cold Work Die Steel
SKD4	JIS	Japan	Hot-work die steel
SKD5	JIS	Japan	Hot-work die steel
SKD6	JIS	Japan	Hot-work die steel
SKD61	JIS	Japan	Hot-work die steel
SKD62	JIS	Japan	Hot-work die steel
SKD7	JIS	Japan	Hot-work die steel
SKD8	JIS	Japan	Hot-work die steel
Q345q E		China	Bridge structure with steel
Q345q C		China	Bridge structure with steel
4CrW2Si		China	Alloy tool steel - Impact resistance tool steel
Cr4W2MoV		China	Alloy tool steel - cold work steels
6W6Mo5Cr4V		China	Alloy tool steel - Impact resistance tool steel
5Cr4W5Mo2V		China	Alloy tool steel - hot-work die steel
4CrMnSiMoV		China	Alloy tool steel - hot-work die steel
4Cr3Mo3SiV		China	Alloy tool steel - hot-work die steel
4Cr5MoSiV		China	Alloy tool steel - hot-work die steel

Available Suppliers

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Rfq.: sales@longhaisteel.com

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