Howard Precision Metals Inc

Mechanical Properties

PCP Alca-5

Alcoa Mic-6

6061-T651**

2024-T351

7075-T651

7050-T7451

Thickness Tolerance +/- .005” +/- .005″ Varies by thickness, 1/2 Commercial AA specs on the plus side. Varies by thickness. HPM stocks on the plus side. Varies by thickness. HPM stocks on the plus side. Varies by thickness. HPM typically stocks on the plus side, but always best to ask.
Flatness Deviation .25″-.50″ Within .015″ .25″-.50″ Within .015″ .25″-3.5″ is .100″ in 6 ft. Longitudinal. .060″ in any 24″ short span. .25″-3.0″ is 3/16″ in any 6 ft. .25″-3.0″ is 3/16″ in any 6 ft. .25″-3.0″ is 3/16″ in any 6 ft.
Flatness Deviation 5/8″ & Up Within .005″ 5/8″ & Up Within .005″ 3.001″-8″ is ⅛” in any 6 ft or less 3.001″-8″ is ⅛” in any 6 ft or less 3.001″-8″ is ⅛” in any 6 ft or less 3.001″-8″ is ⅛” in any 6 ft or less
Typical Yield 18 ksi 15 ksi 40 ksi 47 ksi 73 ksi 68 ksi
Typical Tensile 41 ksi 24 ksi 45 ksi 68 ksi 83 ksi 71 ksi
Elongation in 2″ 12 – 15% 3% 12% 19% 11% 11%
Density 0.096 lb./in. ᵌ 0.101 lb./in. ᵌ 0.098 lb./in ᵌ 0.100 lb./in ᵌ 0.101 lb./in ᵌ 0.102 lb./in ᵌ
Brinell Hardness 70 60-70 95 120 150 140
Surface Finish Precision Milled, 20 RMS or better Precision Milled, 20 RMS or better Typically brushed, 60-90 RMS Producer dependent Typically Mill Rolled Finish Typically Mill Rolled Finish Typically Mill Rolled Finish
Thermal Conductivity @68 Degrees F. 81 btu/ft ²hr°F 82 btu/ft ²hr°F 97 btu/ft -hr-°F 69 btu/ft-hr-°F 75 btu/ft-hr-°F 91 btu/ft-hr.°F
Welding Characteristics Excellent Fair, using Mic-6 guidelines Excellent Average Poor Poor
Anodizing Response Very Good Fair, using Mic-6 guidelines Very Good Average Special Procedures Req’d Average
Machinability Very good with excellent dimensional stability Very good with excellent dimensional stability Average Very Good Very Good Very Good
Corrosion Resistance Excellent Average Very Good Poor Average Average

 

** Howard Precision Metals stocks their 6061 rolled plate product to Precision Plate tolerances which are stated on this chart.

Some distributors stock 6061 plate to standard AA specifications which do not guarantee plus side thickness or tightened flatness tolerances. Be sure to ask or you may be disappointed.

The above alloys are stocked in a full range of thicknesses by Howard Precision Metals. If you would like to know more, please call us at 1-800-444-0311 or find us at howardprecision.com.

The above information is typical data gathered from Industry sources, not to be used for design purposes.



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