18 20 2CuNb

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18 20 2CuNb Mould Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Mould Steel: 18 20 2CuNb

Category	Type	Steel Grade
Steel Grades	Mould Steel	18 20 2CuNb
		1.4351
		18 8Mn6
		1.4370
		19 1 2 3
		1.4403
		19 1 2 3nC
		1.4430
		18 15 3nC
		18 17 5nC
		1.4440

Chemical composition(mass fraction)(wt.%) of the 18 20 2CuNb

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.10					17.0-20.0	19.0-22.0
Mo	Al	Cu	Nb	Ti	V	Ce
2.0-2.5		1.8-2.2	8*C-1.1
N	Co	Pb	B	Other

Mechanical Properties of steel grade 18 20 2CuNb

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)
919 (≥)	995 (≥)	43	12	34	Solution and Aging, Annealing, Ausaging, Q+T,etc	343

Physical Properties of steel grade 18 20 2CuNb

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
42	-	-			0.23	-
479	198	-	13.3	224		-
189	-	32	34.2			111	132

Heat Treatment of steel grade 18 20 2CuNb

Heat treated : 1486°C - 1936°C

Technological Curves of steel grade 18 20 2CuNb

No Curve

Cross Reference Table (Equivalent Grade) of 18 20 2CuNb

Grade	Standard	Country	Application
ASTM 1018	ASTM	USA	General use carbon steel bar
UNS G10180	UNS	USA	General use carbon steel bar
W18Cr4V		China	High-speed tool steel
W18Cr4VCo8		China	High-speed tool steel
W18Cr4V2Co8		China	High-speed tool steel
ASTM A182 F55	ASTM	USA	Super Duplex
1.1820	DIN	Germany	Carbon tool steel
1.1830	DIN	Germany	Carbon tool steel
X91CrMoV18	DIN	Germany	Cold working alloy tool steel
X3NiCoMoTi18-9-5	DIN	Germany	Cold working alloy tool steel
1.2718	DIN	Germany	Cold working alloy tool steel
15NiCr18	DIN	Germany	Cold working alloy tool steel
S18-1-2-5	DIN	Germany	High-speed tool steel
S18-1-2-15	DIN	Germany	High-speed tool steel
S18-1-2-10	DIN	Germany	High-speed tool steel
1.3318	DIN	Germany	High-speed tool steel
S18-0-1	DIN	Germany	High-speed tool steel
E184			Carbide for cutting tools
E184			Carbide for cutting tools
E184			Carbide for cutting tools

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