S1Application:Alloy tool steel
Category	Type	Steel grade	Standard	Country
Grades	Special Alloy	S1	ASTM	USA

Chemical composition%of the ladle analysis of gradeS1

C(％)	Si(％)	Mn(％)	P(％)	S(％)	Cr(％)	Mo(％)	V(%)	W(%)
0.40～0.55	0.15～1.20	0.10～0.40	≤0.030	≤0.030	1.00～1.80	≤0.50	0.15～0.30	1.50～3.00

Mechanical properties of gradeS1
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)
539(≥)	242(≥)	23	23	34	Solution and Aging,Annealing,Ausaging,Q+T,etc	133

Physical properties of gradeS1
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
635(≥)	821(≥)	31	34	42	Solution and Aging,Annealing,Ausaging,Q+T,etc	321
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0)N/mm2	Creep rupture strength (10000h) (Rp1,0)N/mm2
342	779	118

S1Range of products
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
A 581 S18200	ASTM	USA	Free-Machining Stainless Steel Wire and Wire Rods
A 582 S18200	ASTM	USA	Standard Specification for Free-Machining Stainless Steel Bars
S18200	ASTM	USA	Ferritic Chromium Molybdenum Free-Machining Stainless Steel (18-2FM)
A 581 S18235	ASTM	USA	Free-Machining Stainless Steel Wire and Wire Rods
A 582 S18235	ASTM	USA	Standard Specification for Free-Machining Stainless Steel Bars
A 959 S18235	ASTM	USA	Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
S18235	ASTM	USA	Ferritic Chromium Stainless Steel
A 564 S13800	ASTM	USA	Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
A 693 S13800	ASTM	USA	Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A 705 S13800	ASTM	USA	Age-Hardening Stainless Steel Forgings
S13800	ASTM	USA	Precipitation Hardenable Chromium Nickel Aluminum Molybdenum Stainless Steel
SA-564 S13800	ASTM	USA	Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
SA-693 S13800	ASTM	USA	Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
SA-705 S13800	ASTM	USA	Specification for Age-Hardening Stainless Steel Forgings
A 564 S15500	ASTM	USA	Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
A 693 S15500	ASTM	USA	Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A 705 S15500	ASTM	USA	Age-Hardening Stainless Steel Forgings
S15500	ASTM	USA	Precipitation Hardenable Chromium Nickel Copper Stainless Steel
SA-564 S15500	ASTM	USA	Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
SA-693 S15500	ASTM	USA	Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip