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ASTM S4 Details

ASTM S4 Standard Download

S4 Application:Shock-Resisting Tool Steel

Category	Type	Grade	Designations
Grades	Tool Die Steels	S4	USA - ASTM ,

Chemical composition(wt.%) of S4 grade:

Elements	Min.（≥）	Max.（≤）
C	0.50	0.65
Si	1.75	2.25
Mn	0.60	0.95
P	-	0.030
S	-	0.030
Cr	0.10	0.50
Mo	-	-
V	0.15	0.35
W	-	-
Ni＋Cu	-	0.75

Shock-Resisting Tool Steel

Mechanical properties of grade S4

Proof strength R_p0.2 (MPa)	Tensile strength R_m (MPa)	Impact energy KV (J)	Elongation at fracture A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
276 (≥)	985 (≥)	42	21	32	Solution and Aging, Annealing, Ausaging, Q+T,etc	121

Physical properties of grade S4

Property	Density kg/dm3	Temperature T °C/F	Specific heat J / kgK	Thermal conductivity W/mK	Electric resistance µΩ·cm	Modulus of elasticity kN/mm2
664 (≥)	256 (≥)	33	24	22	Solution and Aging, Annealing, Ausaging, Q+T,etc	312
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
459	176	784

S4 - Form of Supply

Product type	Products	Dimension	Processes	Deliver Status
Plates / Sheets	Plates / Sheets	0.08-200mm(T)WL	Forging, hot rolling and cold rolling	Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar	Round Bar, Flat Bar, Square Bar	Φ8-1200mm*L	Forging, hot rolling and cold rolling, Cast	Black, Rough Turning, Shot Blasting,
Coil / Strip	Steel Coil /Steel Strip	0.03-16.0x1200mm	Cold-Rolled & Hot-Rolled	Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes	Seamless Pipes/Tubes, Welded Pipes/Tubes	OD:6-219mm x WT:0.5-20.0mm	Hot extrusion, Cold Drawn, Welded	Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade	Standard	Country	Application
S47450	GB	China	Steels of blade for steam turbine
S47670	GB	China	Steels of blade for steam turbine
A 240 S40500	SAE	USA	Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 268 S40500	SAE	USA	Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
A 276 S40500	SAE	USA	Stainless Steel Bars and Shapes
A 473 S40500	SAE	USA	Stainless Steel Forgings
A 580 S40500	SAE	USA	Stainless Steel Wire
S40500	AISI	USA	Ferritic Chromium Stainless Steel
SA-240 S40500	AMS	USA	Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-268 S40500	AMS	USA	Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
A 268 S40800	SAE	USA	Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
A 959 S40800	SAE	USA	Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
S40800	AISI	USA	Ferritic Chromium Stainless Steel
SA-268 S40800	AMS	USA	Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
A 240 S40900	SAE	USA	Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 268 S40900	SAE	USA	Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
A 554 S40900	SAE	USA	Welded Stainless Steel Mechanical Tubing
S40900	AISI	USA	Ferritic Chromium Stainless Steel
SA-268 TP S40900	AMS	USA	Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
A 493 S40940	SAE	USA	Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging