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.
