M303

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#M303

Description

M303 Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Mould Steel: M303

Category	Type	Steel Grade
Steel Grades	Mould Steel	M303
		ASTM O2
		ASTM P20
		DC53
		M261
		5ХВ2С
		6ХВ2С
		6ХВГ
		11Р3АМ3Ф2
		Р2АМ9К5
		SS14:2312

Chemical composition(mass fraction)(wt.%) of the M303

Component Elements Properties	Metric	English	Comments
Carbon, C	0.270 %	0.270 %
Chromium, Cr	14.5 %	14.5 %
Iron, Fe	82.4 %	82.4 %	As Balance
Manganese, Mn	0.650 %	0.650 %
Molybdenum, Mo	1.00 %	1.00 %
Nickel, Ni	0.850 %	0.850 %
Silicon, Si	0.300 %	0.300 %

Physical Properties	Metric	English	Comments
Density	7.70 g/cc	0.278 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	290 - 330	290 - 330	as supplied; hardened and tempered
Hardness, Rockwell C	53.0	53.0	hardening at 1020°C; without tempering
Modulus of Elasticity	168 GPa @Temperature 600 °C	24400 ksi @Temperature 1110 °F
	181 GPa @Temperature 500 °C	26300 ksi @Temperature 932 °F
	191 GPa @Temperature 400 °C	27700 ksi @Temperature 752 °F
	200 GPa @Temperature 300 °C	29000 ksi @Temperature 572 °F
	207 GPa @Temperature 200 °C	30000 ksi @Temperature 392 °F
	214 GPa @Temperature 100 °C	31000 ksi @Temperature 212 °F
	218 GPa @Temperature 20.0 °C	31600 ksi @Temperature 68.0 °F

Mechanical Properties of steel grade M303

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)
323 (≥)	122 (≥)	12	43	32	Solution and Aging, Annealing, Ausaging, Q+T,etc	121

Physical Properties of steel grade M303

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
11	-	-			0.31	-
523	291	-	31.3	342		-
588	-	33	31.2			213	332

Heat Treatment of steel grade M303

Heat treated : 1867°C - 1725°C

Technological Curves of steel grade M303

No Curve

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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