348H

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#348H

Description

348H High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 348H

Category	Type	Steel Grade
Steel Grades	High Alloy	348H
		S33400
		334
		S34565
		S34700
		347
		S34709
		347H
		S34800
		348
		S34809

Chemical composition(mass fraction)(wt.%) of the 348H

	
					C

					≤
				
					Si

					≤
				
					Mn

					≤
				
					P

					≤
				
					S

					≤
				
					Cr
				
					Ni
			
					0.04-0.1
				
					0.75
				
					2
				
					0.045
				
					0.03
				
					17-19
				
					9-13
			
					Mo
				
					Al
				
					Cu
				
					Nb
				
					Ta
				
					V
				
					Ce
			
					0.1
				
					N
				
					Co
				
					Pb
				
					B
				
					Other
				
					0.2
				
					(Nb+Ta)8*C~1.0

Mechanical Properties of steel grade 348H

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)
548 (≥)	662 (≥)	11	34	34	Solution and Aging, Annealing, Ausaging, Q+T,etc	212

Physical Properties of steel grade 348H

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
33	-	-			0.22	-
194	744	-	42.3	423		-
552	-	42	31.2			241	321

Heat Treatment of steel grade 348H

Heat treated : 1771°C - 1223°C

Technological Curves of steel grade 348H

No Curve

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Rfq.: sales@longhaisteel.com

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C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.04-0.1	0.75	2	0.045	0.03	17-19	9-13
Mo	Al	Cu	Nb	Ta	V	Ce
				0.1
N	Co	Pb	B	Other
	0.2			(Nb+Ta)8*C~1.0

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