SM 2550

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#SM #2550

Description

SM 2550 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: SM 2550

Category	Type	Steel Grade
Steel Grades	High Alloy	SM 2550
		SC-1
		SCF-19
		SCF 23 (Sea Fast)
		SEL
		SEL-15
		Silver Fox 100
		SPI 040
		SPI 126
		SM 2035
		SM 2050

Chemical composition(mass fraction)(wt.%) of the SM 2550

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.03	1	1	0.03	0.03	23-26	47-52
Mo	Al	Cu	Nb	Ti	V	Fe
6-9		≤1.2		≤0.69		...
N	Co	Pb	B	Other
				W ≤3

Mechanical Properties of steel grade SM 2550

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)
881 (≥)	113 (≥)	11	12	44	Solution and Aging, Annealing, Ausaging, Q+T,etc	124

Physical Properties of steel grade SM 2550

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	-	-			0.44	-
731	566	-	34.3	333		-
352	-	23	44.2			332	144

Heat Treatment of steel grade SM 2550

Heat treated : 1125°C - 1927°C

Technological Curves of steel grade SM 2550

No Curve

Cross Reference Table (Equivalent Grade) of SM 2550

Grade	Standard	Country	Application
SM45		China	Plastic mould with flat steel
SM50		China	Plastic mould with flat steel
SM55		China	Plastic mould with flat steel
SM1CrNi3		China	Plastic mould with flat steel
SM3Cr2Mo		China	Plastic mould with flat steel
SM3Cr2Ni1Mo		China	Plastic mould with flat steel
SM2CrNi3MoAl1S		China	Plastic mould with flat steel
SM4Cr5MoSiV		China	Plastic mould with flat steel
SM4Cr5MoSiV1		China	Plastic mould with flat steel
SMCr12Mo1V1		China	Plastic mould with flat steel
SM2Cr13		China	Plastic mould with flat steel
SM3Cr17Mo		China	Plastic mould with flat steel
SM4Cr13		China	Plastic mould with flat steel
SM45A		China	Plastic mould with Hot-rolled steel plate
SM48		China	Plastic mould with Hot-rolled steel plate
SM	SS	Sweden	Carbide for cutting tools
SM	SS	Sweden	Carbide for cutting tools
CF-10SMnN	AISI	USA
ASTM CF10SMnN	AISI	USA
3SMnSi13S			Alloy structural steel

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