634

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#634

Description

634 Stainless Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Stainless Steel: 634

Category	Type	Steel Grade
Steel Grades	Stainless Steel	634
		632
		S15700
		630
		S17400
		635
		S17600
		631
		S17700
		633
		S35000

Chemical composition(mass fraction)(wt.%) of the 634

		
						C

						≤
					
						Si

						≤
					
						Mn

						≤
					
						P

						≤
					
						S

						≤
					
						Cr
					
						Ni
				
						0.10-0.15
					
						0.50
					
						0.50-1.25
					
						0.040
					
						0.030
					
						15-16.0
					
						4.0-5.0
				
						Mo
					
						Al
					
						Cu
					
						Nb
					
						Ti
					
						V
					
						Ce
				
						2.5-3.2
					
						N
					
						Co
					
						Pb
					
						B
					
						Other
					
						(Nb+Ta)0.15-0.50

Mechanical Properties of steel grade 634

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)
296 (≥)	427 (≥)	41	43	22	Solution and Aging, Annealing, Ausaging, Q+T,etc	432

Physical Properties of steel grade 634

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
23	-	-			0.32	-
582	675	-	11.3	312		-
445	-	44	42.2			422	341

Heat Treatment of steel grade 634

Heat treated : 1925°C - 1749°C

Technological Curves of steel grade 634

No Curve

Cross Reference Table (Equivalent Grade) of 634

Grade	Standard	Country	Application
AISI 634	AISI	USA	precipitation hardening
AISI 634	AISI	USA	precipitation hardening
ASTM 634	ASTM	USA	precipitation hardening
ASTM 634	ASTM	USA	precipitation hardening
AM-355(Type634)	UNS	USA	precipitation hardening
AM-355(Type634)	UNS	USA	precipitation hardening
416341			The Czech republic Structural steel
416342			The Czech republic Structural steel
416343			The Czech republic Structural steel
16341			The Czech republic Structural steel
16342			The Czech republic Structural steel
16343			The Czech republic Structural steel

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C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.10-0.15	0.50	0.50-1.25	0.040	0.030	15-16.0	4.0-5.0
Mo	Al	Cu	Nb	Ti	V	Ce
2.5-3.2
N	Co	Pb	B	Other
				(Nb+Ta)0.15-0.50

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634