Machinery's Handbook, 31st Edition
532
Aluminum Casting Alloys Table 6b. Mechanical Property Limits for Separately Cast Test Bars of Commonly Used Aluminum Sand Casting Alloys
Minimum Properties
Typical Brinell Hardness Number (500 kgf load, 10-mm ball)
Tensile Strength (ksi)
Elongation In 2 inches (%)
Alloy 201.0 204.0 208.0 222.0 222.0 242.0 242.0 242.0 242.0 295.0 295.0 295.0 295.0 319.0 319.0 319.0 328.0 328.0 354.0 355.0 355.0 355.0 355.0
Temper a
Ultimate
Yield 50.0 28.0 12.0
T7 T4
60.0 45.0 19.0 23.0 30.0 23.0 29.0 32.0 24.0 29.0 32.0 36.0 29.0 23.0 25.0 31.0 25.0 34.0 25.0 32.0 35.0 30.0 36.0 19.0 23.0 30.0 31.0 25.0 34.0 17.0 17.0 17.0 22.0 42.0 35.0 30.0 33.0 37.0 32.0 34.0 32.0 42.0 32.0 36.0 36.0 42.0 48.0 16.0 17.0 24.0
3.0 6.0 1.5
110-140
F O
40-70 65-95
T61
100-130 55-85 70-100 90-120 60-90 45-75 60-90 80-110
O
T571 T61 T77
20.0 13.0 13.0 20.0 28.0 16.0 13.0 20.0 14.0 21.0 18.0 20.0 22.0 25.0 16.0 20.0 29.0 18.0 24.0 7.0 6.0 10.0 9.0 22.0 18.0 17.0 22.0 30.0 20.0 25.0 22.0 38.0 27.0 30.0 27.0 35.0 45.0
1.0 6.0 3.0 3.0 1.5 1.5 1.0 1.0
T4 T6
T62 T7
55-85 55-85 65-95 65-95 45-75 65-95
F
T5 T6
F
T6
b
T51 T6 T7 T71 T6 T51 T6 T7 T71 F T6
50-80 70-105 70-100 60-95 75-105 40-70 45-75 55-90 60-90 45-75 70-105 25-55 25-55 35-65 35-65 60-90 60-90 50-80 70-100 65-95 60-90 60-90 60-90 85-115 70-100 70-100 75-105 105-135 30-60 30-60
2.0
C355.0 356.0 356.0 356.0 356.0 356.0 A356.0 443.0 B443.0 512.0 514.0 520.0
2.5 2.0
3.0
3.0 3.5 3.0 3.0
F F F F
6.0 12.0 9.0 5.0
T4 c
535.0 705.0 707.0 707.0 710.0 712.0 713.0 771.0 771.0 771.0 771.0 771.0 771.0 850.0 851.0 852.0
F or T5 F or T5
T5 T7
2.0 1.0 2.0 4.0 3.0 1.5 3.0 1.5 1.5 5.0 2.0 5.0 3.0
F or T5 F or T5 F or T5
T5 T51 T52 T53 T6 T71 T5 T5
T5 45-75 Source: Standards for Aluminum Sand and Permanent Mold Castings , courtesy of the Aluminum Association. a F indicates “as cast” condition. b Mechanical properties for these alloys depend on the casting process. For further information consult the individual foundries. c The T4 temper of Alloy 520.0 is unstable; significant room temperature aging occurs within life expectancy of most castings. Elongation may decrease by as much as 80 percent. 18.0
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