Alloy

Designation

Composition (% )

UTS/Elongation (% ) N/mm2

Characteristics and Applications

EC - O

99.5 Al (mini)

75/50

Ductile, high electrical conductivity

3003 - O

3003 - H16

98.8 Al, 1.2 Mn

98.8 Al, 1.2 Mn

130/140

190/140

Good formability and corrosion resistance weldable, storage and utensils

2024 - T4

93 Al, 4.5 Cu, 1.5 Mg,

0.5 Si, 0.5 Mn

500/19

High strength, aircraft parts, bridges, rivers

5056 - H18

5056 - O

94.6 Al, 5.2 Mg, 0.3 Mn

94.6 Al, 5.2 Mg, 0.3 Mn

450/10

300/35

Good corrosion resistance to sea water good finish when buffed or anodized, marine parts, cooking utensils, bus bodies

6061 - T6

6061 - O

98 Al, 1 Mg, 0.6 Si, 0.4 Cu

98 Al, 1 Mg, 0.6 Si, 0.4 Cu

320/17

Good corrosion resistance and formability, general structure, anodized articles, marine and transport parts

7075 - T6

7075 - O

90 Al, 5.5 Zn, 2.5 Mg,

1.7 Cu, 0.3 Cr

90 Al, 5.5 Zn, 2.5 Mg,

1.7 Cu, 0.3 Cr

600/11

240/16

High strength and corrosion resistance, aircraft parts, bridges

Sl. No.

Property

Value

1

Purity %

99.5 Al, 0.25 Si, 0.25 Fe

2

Melting point oC

660

3

Sp. Gravity

2.70

4

Tensile strength, N/mm2

O - Temper

H - 18 Temper

72

135

5

Elongation % O - Temper

H - 18 Temper

60

17

6

Hardness BHN O - Temper

H - 18 Temper

19

35

7

Electrical conductivity* % IACS O - Temper

H - 18 Temper

62

61

8

Thermal conductivity

J/m2/oC/s at 25oC

234

9

Corrosion resistance

Very good in rural marine and industrial, atmosphere