307

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

Datasheet for: Steel Grades:High Alloy: 307

Category	Type	Steel Grade
Steel Grades	High Alloy	307
		253MA
		254SMO
		300M
		302HQ-FM
		303Al Mod
		304HN
		304SCQ
		316SCQ
		317LM
		317L4

Chemical composition(mass fraction)(wt.%) of the 307

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.15	1.00	3.75-4.75	0.045	0.030	19.0-22.0	9.00-10.5
Mo	Al	Cu	Nb	Ti	V	Ce

N	Co	Pb	B	Other

Mechanical Properties of steel grade 307

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)
353 (≥)	718 (≥)	43	21	11	Solution and Aging, Annealing, Ausaging, Q+T,etc	213

Physical Properties of steel grade 307

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
21	-	-			0.21	-
498	923	-	12.3	124		-
615	-	14	12.2			234	231

Heat Treatment of steel grade 307

Heat treated : 1863°C - 1914°C

Technological Curves of steel grade 307

No Curve

Cross Reference Table (Equivalent Grade) of 307

Grade	Standard	Country	Application
T11307	UNS	USA	Molybdenum series High-speed tool steel
1.2307	DIN	Germany	Cold working alloy tool steel
1.4307	AFNOR	France	Austenite

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307