4A11 LD11 - GB /T 3191-2019

Grade	4A11
Old Grade
Corresponding Standard	GB /T 3191-2019 Extrusion rods and bars of aluminium and aluminium alloys
Classification	Aluminum and Aluminum Alloys

4A11 Mechanical Properties

condition	Mark	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
Bar; d≤100	4A11T1	T62	≥350	≥290	≥6
Bar; 100<d≤200	4A11T1	T62	≥340	≥280	≥2.5

① O = annealed ;
② H = work hardened;
③ T6 = solution heat treated + artificial aged;
④ T1 = high temperature molding + natural aged;
⑤ T3 = after solution heat treated, cold processing, and then natural aged to a basically stable;
⑥ T4 = after solution heat treated, natural aged to a basically stable;
⑦ T5 = cooled by high temperature molding, and then artificially aged to a basically stable;
⑧ T7 = after solution heat treated, overaged;
⑨ T8 = after solution heat treated, cold processing , and then artificial aged
◎ d = round rod diameter or thickness of square rod or hexagonal rod, t = square rod or hexagonal rod thickness, unit mm

4A11 Corresponding Standards(Same grade name, different standards)

1	GB /T 3190-2020
	4A11 (LD11)
2	GB /T 3191-2019
	4A11 (LD11)

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