MAR-M 302

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#MAR-M #302

Description

MAR-M 302 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: MAR-M 302

Category	Type	Steel Grade
Steel Grades	High Alloy	MAR-M 302
		M-813
		MA 956
		Magne Dur 20-4
		Marage 200
		Marage 250
		Marage 300
		Marage 350
		MARINLOY HN
		MAR-M 200
		MAR-M 246

Chemical composition(mass fraction)(wt.%) of the MAR-M 302

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.85	0.2	0.1			21.5
Mo	Al	Cu	Nb	Ta	V	Fe
				9		0.75
N	Co	Pb	B	Other	Zr 0.2
	...		0.005	W 10

Mechanical Properties of steel grade MAR-M 302

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)
472 (≥)	349 (≥)	24	21	34	Solution and Aging, Annealing, Ausaging, Q+T,etc	211

Physical Properties of steel grade MAR-M 302

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
14	-	-			0.11	-
773	557	-	43.3	322		-
411	-	42	32.2			332	233

Heat Treatment of steel grade MAR-M 302

Heat treated : 1494°C - 1696°C

Technological Curves of steel grade MAR-M 302

No Curve

Cross Reference Table (Equivalent Grade) of MAR-M 302

Grade	Standard	Country	Application
UNS T72302	UNS	USA	Carbon tool steel
T11302	UNS	USA	Molybdenum series High-speed tool steel
1.3302	DIN	Germany	High-speed tool steel
SUS302FB	JIS	Japan	austenitic special steel
302S31			austenite and ferrite special steel
CNS 302		China	CNS standard stainless steel austenite size
STS302			KS standard austenite stainless steel bars(KS D3706-1992)
SS 2302	SS	Sweden	Swedish SS standard stainless steel and heat resistant steel
S30210		China	Stainless steel bars
S30220		China	Stainless steel bars
S30240		China	Stainless steel bars
302			Australia Stainless steel
302			Australia Stainless steel
302HQ			Australia Stainless steel
V-302			Brazil Stainless steel
V-302 MRC			Brazil Stainless steel
U20302		China	China structural steel and alloy steel
U21302		China	China structural steel and alloy steel
U40302		China	China structural steel and alloy steel
U41302		China	China structural steel and alloy steel

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Rfq.: sales@longhaisteel.com

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