705.0-T5

Aluminum

705.0 cast aluminum

705.0-T5 supplied by Shanxi Youte Steel (jlhsteel.net).

Chemical Composition (%)

ZN5.5
MG0.2
SI0.2
CU0.2
FE0.8

Equivalent Standards

AA 705.0 / ASTM B85

Equivalent Grades

Aluminum Association

Applications

Aerospace, automotive, construction, packaging, electrical.

Available Forms

Castings, Sand, Die

Uses

Aluminium alloy with good strength-to-weight ratio, corrosion resistance and recyclability. Silicon (≈0.2%) improves castability and lowers thermal expansion. Copper (≈0.2%) raises strength and hardness via precipitation hardening. Used in transport, aerospace, packaging, building and electrical applications.

Heat Treatment

Heat-treatable variants solution treated 470–540 °C and aged (T4/T6); non-heat-treatable grades are strain-hardened. Anneal 340–415 °C.

Precautions

Use sharp, high-rake tooling and appropriate coolants; galling/adhesive wear can occur. Titanium reacts with hydrogen and chlorine — keep out of pickling/HCl environments.

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