439 UF

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#439 #UF

Description

439 UF High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 439 UF

Category	Type	Steel Grade
Steel Grades	High Alloy	439 UF
		409Ni
		418
		419
		422
		422M(C)
		422M
		430F Solenoid
		430FR Solenoid
		439 HP-10
		439LT

Chemical composition(mass fraction)(wt.%) of the 439 UF

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.04	0.06	1.00			17.0-18.0	≤0.50
Mo	Al	Cu	Nb	Ti	V	Ce
				0.20-0.60
N	Co	Pb	B	Other

Mechanical Properties of steel grade 439 UF

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)
973 (≥)	145 (≥)	34	23	42	Solution and Aging, Annealing, Ausaging, Q+T,etc	143

Physical Properties of steel grade 439 UF

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
31	-	-			0.24	-
399	584	-	11.3	421		-
363	-	32	11.2			121	121

Heat Treatment of steel grade 439 UF

Heat treated : 1292°C - 1827°C

Technological Curves of steel grade 439 UF

No Curve

Cross Reference Table (Equivalent Grade) of 439 UF

Grade	Standard	Country	Application
1.4439			austenitic special steel
1.4439(AFNOR)	AFNOR	France	Austenite
SNCM439		China	China Taiwan Structural steel
VascoTuf	AISI	USA	Martensitic special steel
Z8CNUF18-09	AFNOR	France	Hot-Rolled stainless steel bar and wire rod (NF A 35-574 (1990))

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