SKT 4

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#SKT #4

Description

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

Datasheet for: Steel Grades:Tool Steel: SKT 4

Category	Type	Steel Grade
Steel Grades	Tool Steel	SKT 4
		SKD 6
		SKD 61
		X40CrMoV5-1
		SKD 62
		X35CrWMoV5
		SKD 7
		32CrMoV3-3
		SKD 8
		X38CrCoWV4-4-4
		SKT 3

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

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.5-0.6	0.1-0.4	0.6-0.9	0.03	0.02	0.8-1.2	1.5-1.8
Mo	Al	Cu	Nb	Ti	V	Ce
0.35-0.55		0.25			0.05-0.15
N	Co	Pb	B	Other

Mechanical Properties of steel grade SKT 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)
662 (≥)	336 (≥)	23	42	32	Solution and Aging, Annealing, Ausaging, Q+T,etc	244

Physical Properties of steel grade SKT 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
34	-	-			0.43	-
698	383	-	23.3	132		-
732	-	21	12.2			324	414

Heat Treatment of steel grade SKT 4

Heat treated : 1679°C - 1657°C

Technological Curves of steel grade SKT 4

No Curve

Cross Reference Table (Equivalent Grade) of SKT 4

Grade	Standard	Country	Application
SKT3	JIS	Japan	Hot-work die steel
SKT4	JIS	Japan	Hot-work die steel
SKT6	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
4Cr5MoSiV1		China	Alloy tool steel - hot-work die steel
4Cr5W2VSi		China	Alloy tool steel - hot-work die steel
SM45		China	Plastic mould with flat steel
SM50		China	Plastic mould with flat steel
SM4Cr5MoSiV		China	Plastic mould with flat steel
SM4Cr5MoSiV1		China	Plastic mould with flat steel
SM4Cr13		China	Plastic mould with flat steel
SM45A		China	Plastic mould with Hot-rolled steel plate

Available Suppliers

Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com

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