Aluminum 3003 (UNS A93003)

Description

Aluminum alloy 3003 contains about 1.25% manganese and 0.1% copper, which increase the strength approximately 20% above the 1000 series aluminum grades. This is the most widely used of all aluminum alloys and it has all the excellent characteristics of alloy 1100 with higher strength. It is a medium strength alloy that is hardenable only by cold work and is not heat treatable. It has good weldability, formability and corrosion resistance.

Typical applications include general sheet metal work requiring greater strength than is provided by 1000 series aluminum alloys, profiled building sheet (roofing and siding), insulation panels, food and chemical handling equipment.

Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM B209 and ASME SB209*
Element 3003
Silicon 0.6
Iron 0.7
Copper 0.05-0.20
Manganese 1.0-1.5
Zinc 0.10
Aluminum balance
Other Elements (each) 0.05
Other Elements (total) 0.15
* Maximum, unless range is indicated
Mechanical Properties
Mechanical property requirements for annealed product (O temper) as specified in ASTM B209 and ASME SB209
Thickness (inch) Yield Strength Min. (ksi)

Tensile Strength (ksi)

Elongation (%)
Min.

Bend Diameter Factor,N

Min. Max.    
0.006 – 0.019 5.0 14.0 19.0 14

0

0.008 – 0.012 5.0 14.0 19.0 18 0
0.013 – 0.031 5.0 14.0 19.0 20 0
0.032 – 0.050 5.0 14.0 19.0 23 0
0.051 – 0.249 5.0 14.0 19.0 25 0
0.250 – 3.00 5.0 14.0 19.0 23 -

Mechanical property requirements for strain hardened H12 temper (¼ hard) as specified in ASTM B209 and ASME SB209

Thickness (inch) Yield Strength Min. (ksi)

Tensile Strength (ksi)

Elongation (%)
Min.

Bend Diameter Factor,N

Min. Max.    
0.017 – 0.019 12.0 17.0 23.0 3

0

0.020 – 0.031 12.0 17.0 23.0 4 0
0.032 – 0.050 12.0 17.0 23.0 5 0
0.051 – 0.113 12.0 17.0 23.0 6 0
0.114 – 0.161 12.0 17.0 23.0 7 0
0.162 - 0.249 12.0 17.0 23.0 8 0
0.250 – 0.499 12.0 17.0 23.0 9 -
0.500 – 2.000 12.0 17.0 23.0 10 -

Mechanical property requirements for strain hardened H14 temper (½ hard) as specified in ASTM B209 and ASME SB209

Thickness (inch) Yield Strength Min. (ksi)

Tensile Strength (ksi)

Elongation (%)
Min.

Bend Diameter Factor,N

Min. Max.    
0.009 – 0.012 17.0 20.0 26.0 1

0

0.013 – 0.019 17.0 20.0 26.0 2 0
0.020 – 0.031 17.0 20.0 26.0 3 0
0.032 – 0.050 17.0 20.0 26.0 4 0
0.051 – 0.113 17.0 20.0 26.0 5 0
0.114 – 0.161 17.0 20.0 26.0 6 2
0.162 – 0.249 17.0 20.0 26.0 7 2
0.250 – 0.499 17.0 20.0 26.0 8 -
0.500 – 1.000 17.0 20.0 26.0 10 -
Physical Properties
Physical properties for Alloy 3003
Property 3003 Data
Density, lb/in3 0.099
Modulus of Elasticity, psi 10.0 x 106
Coefficient of Thermal Expansion, 68-212˚F, /˚F 12.9 x 10-6
Thermal Conductivity, Btu/ft hr ˚F 112
Specific Heat, Btu/lb ˚F 0.213
Electrical Resistivity, Microohm-in 1.374
Standards
Typical standards for Alloy 3003
3003
ASTM B209
ASME SB209

Data are typical, are provided for informational purposes, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice. We make no representation or warranty as to its accuracy and assume no duty to update. Actual data on any particular product or material may vary from those shown herein.  © 2014 RMP Inc. All rights reserved.