Aluminium Alloy - Commercial Alloy

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Last Datasheet Revision

13 November 2018

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3103 H14 Sheet

Aluminium alloy 3103 H14

Chemical Composition

Spec: BS EN 573-3:2009

Alloy 3103

Chemical Element	% Present
Manganese (Mn)	0.90 - 1.50
Iron (Fe)	0.0 - 0.70
Copper (Cu)	0.0 - 0.10
Magnesium (Mg)	0.0 - 0.30
Silicon (Si)	0.0 - 0.50
Zinc (Zn)	0.0 - 0.20
Other (Each)	0.0 - 0.05
Others (Total)	0.0 - 0.15
Chromium (Cr)	0.0 - 0.10
Titanium + Zirconium (Ti+Zr)	0.0 - 0.10
Aluminium (Al)	Balance

Properties

Physical Property	Value
Density	2.73 g/cm³
Melting Point	655 °C
Thermal Expansion	23.1 x10^-6 /K
Modulus of Elasticity	69.5 GPa
Thermal Conductivity	160 W/m.K
Electrical Resistivity	42 % IACS

Spec: BS EN 485-2:2008

Sheet - 0.2mm to 6.0mm

Mechanical Property	Value
Tensile Strength	140 - 180 MPa
Proof Stress	120 Min MPa
Hardness Brinell	45 HB

Alloy Designations

Aluminium alloy 3103 corresponds to the following standard designations and specifications but may not be a direct equivalent:

ISO Al Mn1

Temper Types

The most common tempers for 3103 aluminium are:

H14 - Work hardened by rolling to half hard, not annealed after rolling

Supplied Forms

Alloy 3103-H14 is normally supplied as Sheet

Sheet

Weldability

Alloy 3103 has very good weldability

Fabrication

Workability – Cold: Good

Machinability: Acceptable

Weldability – Gas: Very Good

Weldability – Arc: Very Good

Weldability – Resistance: Good

Brazability: Very Good
Solderability: Very Good

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