A7 Aluminum Ingot (99.7% Pure)

A7 Aluminum Re- Melt Ingot (99.7% Pure)

High-Purity Aluminium for Industrial and Commercial Applications

Product Overview

A7 Aluminum Re-Melt Ingot is a premium-grade, high-purity aluminium alloy with a minimum 99.7% aluminum content. Renowned for its corrosion resistance, lightweight properties, excellent conductivity, and malleability, it is widely used in automotive, aerospace, construction, and electrical industries.
NB: Aluminum/Aluminium: The element is the same, regardless of spelling. “Aluminum” is the preferred spelling in the United States, while “aluminium” is the standard spelling in most other English-speaking countries.

Manufactured via the Hall-Héroult process, A7 ingots are cast into trapezoidal or rectangular shapes for ease of handling and transport.

Key Specifications of A7 Re-Melt Aluminum Ingot

Chemical Composition

Element	Content (Max %)
Aluminum (Al)	≥ 99.7%
Iron (Fe)	≤ 0.20%
Silicon (Si)	≤ 0.10%
Copper (Cu)	≤ 0.01%
Zinc (Zn)	≤ 0.01%
Titanium (Ti)	≤ 0.03%
Other Impurities	≤ 0.03% (each)
Total Impurities	≤ 0.30%

Physical Properties

Shape: Trapezoidal / Rectangular
Weight per Ingot: 20–25 kg (Standard: 25 kg)
Bundle Weight (Iron-Strapped): 1 MT (40 ingots) or 1.2 MT (54 ingots)
Color: Silvery white, metallic luster
Density: 2.7 g/cm³
Melting Point: 660.3°C (1220.5°F)

Mechanical Properties

Tensile Strength: 70–100 MPa
Yield Strength: 20–40 MPa
Elongation: Varies by processing
Hardness: Low (soft due to high purity)

Applications

Automotive & Aerospace – Lightweight components (body panels, engine parts)
Construction – Roofing, siding, window frames, structural elements
Electrical – Wiring, conductors, busbars
Packaging – Cans, foils for food & beverage
Alloy Production – Base material for alloys (e.g., 6061, 7075)
Steelmaking – Deoxidizing agent
HVAC & Refrigeration – Heat exchangers