Machinery's Handbook, 31st Edition
WROUGHT ALUMINUM ALLOYS 539 Table 7b. Typical Mechanical Properties of Wrought Aluminum Alloys Table 7b. (Continued) Typical Mechanical Properties of Wrought Aluminum Alloys
Tension
Brinell Hardness Number (500 kg load, 10-mm ball)
Strength (ksi)
Elongation in 2 inches (%)
Ultimate Shearing Strength (ksi)
Endurance Limit a (ksi)
1 ⁄ 16 -inch Thick Specimen
1 ⁄ 2 -inch Diameter Specimen
Ulti mate Yield
Alloy and Temper
6066-O
22 52 57 55 14 32 58 36 45 22 27 35 75 75 72 76 80 33 83 32 76 33 88 83 32 81 17
12 30 52 51 11 28 55 22 41 13 21 31 65 63 63 68 71 15 73 14 67 15 78 73 14 71 14
18 18 12
43 90
14 29 34 34 20 35 29 14 17 22 44 43 44 47 22 48 22 46
6066-T4, T451 6066-T6, T651ß
120
16 14
6070-T6 6101-H111 6101-T6 6262-T9
10
15
71
10
120
13
6351-T4 6351-T6 6463-T1 6463-T5
20 14 20 12 12
95 42 60 74
13 10 10 10
6463-T6 7049-T73 7049-T7352 7050-T73510, T73511 7050-T7451 f 7050-T7651 7075-T6, T651 Alclad 7075-O 7075-O
12 11 12 11 11 16 11
135 135
17 11 17 11 15 10 16 10 15
60
150
23
Alclad 7075-T6, T651
7178-O
16 11 11
7178-T6, T651 7178-T76, T7651 Alclad 7178-O
Alclad 7178-T6, T651
8176-H24 10 a Based on 500,000,000 cycles of completely reversed stress using the R. R. Moore type of machine and specimen. b 1350-O wire should have an elongation of approximately 23 percent in 10 inches. c 1350-H19 wire should have an elongation of approximately 1.5 percent in 10 inches. d Tempers T361 and T861 were formerly designated T36 and T86, respectively. e Based on 10 7 cycles using flexural type testing of sheet specimens. f T7451, although not previously registered, has appeared in the literature and in some specifications as T73651. The data given in this table are intended only as a basis for comparing alloys and tempers, and should not be specified as engineering requirements or used for design purposes. The indicated typical mechanical properties for all except O temper material are higher than the specified minimum properties. For O temper products, typical ultimate and yield values are slightly lower than specified (maximum) values. Source: Aluminum Standards and Data. Courtesy of the Aluminum Association. Heat-Treatability of Wrought Aluminum Alloys.— In high-purity form, aluminum is soft and ductile. Most commercial uses, however, require greater strength than pure aluminum affords. This extra strength is achieved in aluminum first by the addition of other elements to produce various alloys, which singly or in combination impart strength to the metal. Further strengthening is possible by means that classify the alloys roughly into two categories, non-heat-treatable and heat-treatable. Non-heat-treatable alloys: The initial strength of alloys in this group depends upon the hardening effect of elements such as manganese, silicon, iron and magnesium, singly or
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