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#303

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303 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 303

Category	Type	Steel Grade
Steel Grades	High Alloy	303
		S15500
		XM-13
		S13800
		XM-16
		S45500
		XM-25
		S45000
		S46500
		XM-1
		S20300

Chemical composition(mass fraction)(wt.%) of the 303

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.15	1	2	0.2	0.15	17-19	8-10
Mo	Al	Cu	Nb	Ti	V	Ce

N	Co	Pb	B	Other

Mechanical Properties of steel grade 303

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)
145 (≥)	796 (≥)	22	31	13	Solution and Aging, Annealing, Ausaging, Q+T,etc	432

Physical Properties of steel grade 303

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
13	-	-			0.41	-
898	487	-	31.3	431		-
634	-	22	44.2			123	443

Heat Treatment of steel grade 303

Heat treated : 1784°C - 1596°C

Technological Curves of steel grade 303

No Curve

Cross Reference Table (Equivalent Grade) of 303

Grade	Standard	Country	Application
303S42			austenitic special steel
303S31			austenitic special steel
1.4303	AFNOR	France	Austenite
CNS 303		China	CNS standard stainless steel austenite size
CNS 303Se		China	CNS standard stainless steel austenite size
STS303			KS standard austenite stainless steel bars(KS D3706-1992)
STS303Se			KS standard austenite stainless steel bars(KS D3706-1992)
SS 2303	SS	Sweden	Swedish SS standard stainless steel and heat resistant steel
S30317		China	Stainless steel bars
S30327		China	Stainless steel bars
413030			The Czech republic Structural steel
13030			The Czech republic Structural steel
303			Australia Stainless steel
V-303			Brazil Stainless steel
A30304		China	China structural steel and alloy steel
A30354		China	China structural steel and alloy steel
CNS 303		China	China Taiwan Stainless steel
CNS 303Se		China	China Taiwan Stainless steel
CNS 303		China	China Taiwan Stainless steel
CNS 303Se		China	China Taiwan Stainless steel

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Rfq.: sales@longhaisteel.com

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303