SS 2120

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#SS # #2120

Description

SS SS 2120 Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Alloy Steel: SS 2120

Category	Type	Steel Grade	Standard
Steel Grades	Alloy Steel	SS 2120	SS
		UNI 40 Cr 4
		UNI 40 CrMo 4
		UNI 40 NiCrMo 2 KB
		UNI 40 NiCrMo 7
		UNI 40 NiCrMo 7 KB
		UNI 41 Cr 4 KB
		UNI 55 Si 8
		UNI G 4O CrMo 4
		UNI G22Mo5
		SS 2090

Chemical composition(mass fraction)(wt.%) of the SS 2120

Element	Weight %
C	0.33-0.38
Mn	1.60-1.90
P	0.035 (max)
S	0.04 (max)
Si	0.15-0.30

Mechanical Properties of steel grade SS 2120

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)
259 (≥)	368 (≥)	22	32	11	Solution and Aging, Annealing, Ausaging, Q+T,etc	344

Physical Properties of steel grade SS 2120

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
44	-	-			0.23	-
691	528	-	24.3	442		-
171	-	12	42.2			432	214

Heat Treatment of steel grade SS 2120

Heat treated : 1658°C - 1167°C

Technological Curves of steel grade SS 2120

No Curve

Cross Reference Table (Equivalent Grade) of SS 2120

Grade	Standard	Country	Application
M3 Class1	ASTM	USA	Molybdenum series High-speed tool steel
M3 Class2	ASTM	USA	Molybdenum series High-speed tool steel
SS440	JIS	Japan	SS440
SS14:1770	SS	Sweden	Carbide for cutting tools
SS14:1770	SS	Sweden	Carbide for cutting tools
SS14:1778	SS	Sweden	Carbide for cutting tools
SS14:1778	SS	Sweden	Carbide for cutting tools
SS14:1880	SS	Sweden	Carbide for cutting tools
SS14:1880	SS	Sweden	Carbide for cutting tools
SS14:1885	SS	Sweden	Carbide for cutting tools
SS14:1885	SS	Sweden	Carbide for cutting tools
SS14:—	SS	Sweden	Carbide for cutting tools
SS14:—	SS	Sweden	Carbide for cutting tools
SS14:2140	SS	Sweden	Carbide for cutting tools
SS14:2242	SS	Sweden	Carbide for cutting tools
SS14:2242	SS	Sweden	Carbide for cutting tools
SS14:2260	SS	Sweden	Carbide for cutting tools
SS14:2260	SS	Sweden	Carbide for cutting tools
SS14:2310	SS	Sweden	Carbide for cutting tools
SS14:2310	SS	Sweden	Carbide for cutting tools

Available Suppliers

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Rfq.: sales@longhaisteel.com

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