LANG ALLOY 7R

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#LANG #ALLOY #7R

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LANG ALLOY 7R High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: LANG ALLOY 7R

Category	Type	Steel Grade
Steel Grades	High Alloy	LANG ALLOY 7R
		KOVAR
		L-251
		L-605
		LANG ALLOY 1N
		LANG ALLOY 2N
		LANG ALLOY 5N
		LANG ALLOY 11N
		LANG ALLOY 2R
		LANG ALLOY 4R
		LANG ALLOY 5R

Chemical composition(mass fraction)(wt.%) of the LANG ALLOY 7R

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.08	3				23	...
Mo	Al	Cu	Nb	Ti	V	Fe
6		6				5
N	Co	Pb	B	Other
				W 2

Mechanical Properties of steel grade LANG ALLOY 7R

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)
547 (≥)	753 (≥)	11	34	32	Solution and Aging, Annealing, Ausaging, Q+T,etc	313

Physical Properties of steel grade LANG ALLOY 7R

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	-	-			0.12	-
565	298	-	12.3	342		-
875	-	13	42.2			212	332

Heat Treatment of steel grade LANG ALLOY 7R

Heat treated : 1469°C - 1562°C

Technological Curves of steel grade LANG ALLOY 7R

No Curve

Cross Reference Table (Equivalent Grade) of LANG ALLOY 7R

Grade	Standard	Country	Application
Vicalloy	AISI	USA	Martensitic special steel
Alloy 52	SAE	USA	Alloy 52 is a 50.50% nickel-iron alloy developed for glass-to-metal seals for some of the soft glasses and some ceramics. The alloy’s rate of thermal expansion is virtually constant to a temperature of about 1050°F (565°C).
Alloy 713C	ASTM	USA	HIGH-TEMPERATURE HIGH-STRENGTH NICKEL BASE ALLOYS,CAST ALLOYS
Alloy 713LC	ASTM	USA	HIGH-TEMPERATURE HIGH-STRENGTH NICKEL BASE ALLOYS,CAST ALLOYS
SWRCH17R		China	China Taiwan Structural steel

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