Co Free 250

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#Co #Free #250

Description

Co Free 250 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: Co Free 250

Category	Type	Steel Grade
Steel Grades	High Alloy	Co Free 250
		Chrome core 13
		Chrome core 13-FM
		Chrome core 18-FM
		Chrome core 29 Solenoid
		Chromindur Ⅱ
		Chromel
		Chromoloy
		Chromwear 300
		CMN
		Cobalt Ascoloy

Chemical composition(mass fraction)(wt.%) of the Co Free 250

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.03						18.5
Mo	Al	Cu	Nb	Ti	V	Ce
3.0	0.1			1.4
N	Co	Pb	B	Other

Mechanical Properties of steel grade Co Free 250

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)
675 (≥)	486 (≥)	24	31	12	Solution and Aging, Annealing, Ausaging, Q+T,etc	133

Physical Properties of steel grade Co Free 250

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
43	-	-			0.43	-
651	326	-	42.3	143		-
894	-	12	24.2			343	231

Heat Treatment of steel grade Co Free 250

Heat treated : 1957°C - 1977°C

Technological Curves of steel grade Co Free 250

No Curve

Cross Reference Table (Equivalent Grade) of Co Free 250

Grade	Standard	Country	Application
W18Cr4VCo8		China	High-speed tool steel
W18Cr4V2Co8		China	High-speed tool steel
W12Cr4V5Co5		China	High-speed tool steel
W6Mo5Cr4V2Co5		China	High-speed tool steel
W7Mo4Cr4V2Co5		China	High-speed tool steel
W2Mo9Cr4VCo8		China	High-speed tool steel
CO-1	ASTM	USA	Casting tool steels and powder metallurgy tool steel
X3NiCoMoTi18-9-5	DIN	Germany	Cold working alloy tool steel
X165CrCoMo12	DIN	Germany	Cold working alloy tool steel
X210CrCoW12	DIN	Germany	Cold working alloy tool steel
X30WCrCoV9-3	DIN	Germany	Hot working alloy tool steel
X45CoCrWV5-5-5	DIN	Germany	Hot working alloy tool steel
X32CrMoCoV3-3-3	DIN	Germany	Hot working alloy tool steel
X15CrMoCoV10-10-5	DIN	Germany	Hot working alloy tool steel
X20CoCrWMo10-9	DIN	Germany	Hot working alloy tool steel
X45CoCrMoV5-5-3	DIN	Germany	Hot working alloy tool steel
X160CrCoMoV12-3	AFNOR	France	Carbide for cutting tools
X160CrCoMoV12-3	AFNOR	France	Carbide for cutting tools
X2NiCoMoTi18-8-5	AFNOR	France	Carbide for cutting tools
X2NiCoMoTi18-8-5	AFNOR	France	Carbide for cutting tools

Available Suppliers

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Rfq.: sales@longhaisteel.com

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