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

Datasheet for: Steel Grades:High Alloy: 308

Category	Type	Steel Grade
Steel Grades	High Alloy	308
		302
		S30200
		302B
		S30215
		304
		S30400
		304L
		S30403
		305
		S30500

Chemical composition(mass fraction)(wt.%) of the 308

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.08	1	2	0.045	0.03	19-21	10-12
Mo	Al	Cu	Nb	Ti	V	Ce

N	Co	Pb	B	Other

Mechanical Properties of steel grade 308

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)
589 (≥)	139 (≥)	11	21	22	Solution and Aging, Annealing, Ausaging, Q+T,etc	221

Physical Properties of steel grade 308

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	-	-			0.44	-
331	726	-	14.3	421		-
196	-	23	21.2			231	231

Heat Treatment of steel grade 308

Heat treated : 1163°C - 1493°C

Technological Curves of steel grade 308

No Curve

Cross Reference Table (Equivalent Grade) of 308

Grade	Standard	Country	Application
UNS R30816	UNS	USA	precipitation hardening
S30808		China	Stainless steel bars
411308			The Czech republic Structural steel
11308			The Czech republic Structural steel

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308