COMMERCIAL PURITY ALUMINIUM

Aluminium Alloy 1070

Aluminium Alloy 1070 is listed in the COMMERCIAL PURITY ALUMINIUM material family. The reference data below should be checked against the governing product specification, product form and delivery condition before selection or certification.

Alloy 1070
MATERIAL INTRODUCTION

Aluminium Alloy 1070

The reference chemistry table for Aluminium Alloy 1070 lists Aluminium (Al): 99.70% Min; Iron (Fe): 0.25% Max; Silicon (Si): 0.20% Max; Copper (Cu): 0.04% Max. Confirm exact limits and analysis tolerances against the governing standard and product form.

The mechanical-property table for Aluminium Alloy 1070 lists Tensile Strength (O Temper): 70–100 MPa; Yield Strength (O Temper): Approximately 25–30 MPa; Elongation: Temper and thickness dependent %; Hardness: Temper-dependent HB. These are reference entries; supplied condition, dimensions, test method and governing specification control the requirements, and the figures are not design allowables.

Werkstoff / EN cross-reference for Aluminium Alloy 1070: 3.0275. This comparison does not guarantee interchangeability; confirm chemistry, product form and condition against the governing specification.

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TECHNICAL INFORMATION

Material Identification

Standard identification and material designation information for Aluminium Alloy 1070.

Material Aluminium Alloy 1070
UNS Number A91070
Werkstoff Number 3.0275
Material Type Commercially Pure Aluminium
MATERIAL PROPERTIES

Chemical Composition

The reference chemistry table lists Aluminium (Al): 99.70% Min; Iron (Fe): 0.25% Max; Silicon (Si): 0.20% Max; Copper (Cu): 0.04% Max. Confirm the governing standard, product analysis tolerances and product form before ordering.

Element Symbol Composition
Aluminium Al 99.70% Min
Iron Fe 0.25% Max
Silicon Si 0.20% Max
Copper Cu 0.04% Max
Manganese Mn 0.03% Max
Magnesium Mg 0.03% Max
Zinc Zn 0.04% Max
Titanium Ti 0.03% Max
Vanadium V 0.05% Max
Other Elements (Each) — 0.03% Max
PERFORMANCE DATA

Mechanical Properties

The table reports Tensile Strength (O Temper): 70–100 MPa; Yield Strength (O Temper): Approximately 25–30 MPa; Elongation: Temper and thickness dependent %; Hardness: Temper-dependent HB as reference data for Aluminium Alloy 1070. Actual requirements depend on condition, dimensions, test method and specification; these values are not design allowables.

Property Typical Value Unit
Tensile Strength (O Temper) 70–100 MPa
Yield Strength (O Temper) Approximately 25–30 MPa
Elongation Temper and thickness dependent %
Hardness Temper-dependent HB

Note: Values are indicative only and vary with temper, dimensions and product form. Confirm the applicable material specification and mill test certificate before using mechanical properties for engineering design.

MATERIAL DATA

Physical Properties

Density Approx. 2.70 g/cm³
Elastic Modulus Approx. 69 GPa
Thermal Conductivity Approx. 230 W/m·K
Specific Heat Approx. 900 J/kg·K
Melting Range Approx. 640–660°C
WHY SELECT THIS MATERIAL

Material Characteristics

Aluminium Alloy 1070 combines high aluminium purity, excellent conductivity, corrosion resistance and formability. It is selected for applications where these characteristics are more important than high mechanical strength.

01

High Electrical Conductivity

High aluminium purity provides excellent electrical conductivity for suitable electrical and conductive applications.

02

Excellent Thermal Conductivity

Good heat-transfer performance makes Alloy 1070 suitable for selected thermal components and heat-exchange applications.

03

Corrosion Resistance

Provides good resistance to atmospheric corrosion in many normal service environments.

04

Excellent Formability

High ductility supports forming and fabrication operations, particularly in softer tempers.

Aluminium Alloy 1070 Bolting Products

INDUSTRIAL USE

Typical Applications

Aluminium Alloy 1070 is selected for applications requiring high purity, electrical and thermal conductivity, formability and corrosion resistance.

01

Electrical Industry

Conductive components and selected electrical applications where high aluminium purity is required.

02

Heat Transfer Equipment

Heat exchangers and thermal components requiring good conductivity and suitable corrosion performance.

03

Chemical Industry

Selected equipment and components where aluminium's corrosion resistance is appropriate for the service media.

04

Reflective Products

Reflectors and fabricated products requiring high-purity aluminium and suitable surface finishing.

ENGINEERING GUIDE

Engineering Considerations

Service Environment

Consider chemical exposure, operating temperature and galvanic compatibility with dissimilar metals when selecting Aluminium Alloy 1070.

Fabrication

Select suitable forming and joining procedures according to the required temper, product form and final component geometry.

Mechanical Requirements

Alloy 1070 is a relatively low-strength aluminium grade. Verify temper-specific properties and design requirements before specifying it for load-bearing components or fasteners.

COMMON QUESTIONS

Frequently Asked Questions

What is the Werkstoff number for Aluminium Alloy 1070?

The commonly listed Werkstoff / EN cross-reference for Aluminium Alloy 1070 is 3.0275. Treat this as a grade comparison, not a guarantee of interchangeability. Verify chemistry, product form, condition and governing specification against the supplier certificate before substitution.

ENGINEERING SUPPORT

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