L4 四号工业纯铝 - GJB 2379-1995

Grade	L4
Other Names
Corresponding Standard	GJB 2379-1995 Specification for Aluminium and Aluminium Alloys Drawn(Rolled) Tubes for Aerospace
Classification	Aluminum and Aluminum Alloys

L4 Chemical Element Composition Content (%)

Component	Fe	Si	Cu	Al	Other Individual	More
Minimum Value	-	-	-	99.3	-	Fe+Si≤0.6
Maximum Value	0.35	0.4	0.05	-	0.03	Fe+Si≤0.6

Chemical composition in accordance with GB 3190-82
The four-character grades in the other names are from GB/T 3190-2008

L4 Mechanical Properties

	Mark	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %
All sizes, t≤2	L4Y	Y	≥108	≥4
All sizes, 2＜t≤5	L4Y	Y	≥98	≥5
All Sizes	L4M	M	≤118	≥20

Code and condition: M (O) = Soft；Y (HX8) = Hard；Y2 (HX4) = Half-Hard；CZ (T4) = Solution Heat Treated + Natural Aging；CS (T6) = Solution Heat Treated + Artificial Aging; New code name in parentheses

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!