AISI/SAE L7

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#AISI/SAE # # #L7

Description

AISI/SAE L7 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: AISI/SAE L7

Category	Type	Steel Grade
Steel Grades	Tool Steel	AISI/SAE L7
		AISI/SAE L6
		UNS T61206
		AISI/SAE A11
		UNS T30111
		AISI/SAE L1
		UNS T61201
		AISI/SAE L4
		UNS T61204
		AISI/SAE L5
		UNS T61205

Chemical composition(mass fraction)(wt.%) of the AISI/SAE L7

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.95-1.05	0.2-0.4	0.25-0.45			1.25-1.75
Mo	Al	Cu	Nb	Ti	V	Ce
0.3-0.5
N	Co	Pb	B	Other

Mechanical Properties of steel grade AISI/SAE L7

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)
166 (≥)	388 (≥)	22	13	23	Solution and Aging, Annealing, Ausaging, Q+T,etc	213

Physical Properties of steel grade AISI/SAE L7

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
34	-	-			0.41	-
555	163	-	42.3	324		-
145	-	11	21.2			123	314

Heat Treatment of steel grade AISI/SAE L7

Heat treated : 1359°C - 1231°C

Technological Curves of steel grade AISI/SAE L7

No Curve

Cross Reference Table (Equivalent Grade) of AISI/SAE L7

Grade	Standard	Country	Application
Q195		China	Engineering and welding
Q215		China	Engineering and welding
Q215 B		China	Engineering and welding
Q235		China	Engineering and welding
Q235 B		China	Engineering and welding
Q235 C		China	Engineering and welding
Q235 D		China	Engineering and welding
Q255 A		China	Engineering and welding
Q255 B		China	Engineering and welding
Q275		China	Engineering and welding
Q235q C		China	Bridge structure with steel
Q235q D		China	Bridge structure with steel
Q345q E		China	Bridge structure with steel
Q345q C		China	Bridge structure with steel
ASTM 1030	ASTM	USA	General use carbon steel bar
UNS G10300	UNS	USA	General use carbon steel bar
ASTM 1005	ASTM	USA	General use carbon steel bar
UNS G10050	UNS	USA	General use carbon steel bar
ASTM 1006	ASTM	USA	General use carbon steel bar
UNS G10060	UNS	USA	General use carbon steel bar

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