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Alloy & Temper Specifications...

Extrusion Tempers
O Fully Annealed
T1 Cooled from an elevated temperature and naturally aged.
T4 Solution heat-treated and naturally aged.
T5 Cooled from an elevated temperature and artificially aged.
T52 Solution heat-treated and artificially aged.
T54 Solution heat-treated and artificially aged. 
T6  Solution heat-treated and artificially aged. 
T61  Solution heat-treated and artificially aged. 
Mechanical Property Limits
Alloy & Temper Spec. Diameter or Thickness In. Webster Tensile Strength - ksi Elongation
      Ultimate   Yield    
      Min. Max. Min. Max.  
6063-0 All 0 19     18  
6063-T1 Up thru .500 1 to 5 17   9   12
  .501-1.000   16   8   12
6063-T4 Up thru .500 3 to 7 19   10   14
  .501-1.000   18   9   14
6063-T5 Up thru .500 7 or better 22   16   8
  .501-1.000   21   15   8
6063-T52 Up thru 1.000 7 to 11 22 30 16 25 8
6063-T6 Up thru 0.124 12 or better 30   25   8
  .125-1.000   30   25   10
6005A-T1 Up thru .249 5 or better 25   14.5   15
6005A-T5 Up thru .249 15 or better 38   31   7
  .250-.999   38   31   9
6005A-T61 Up thru .249 15 or better 38   35   8
  .250-1.00   38   35   10
6061-T1 Up thru .625 9 or better 26   14   16
6061-T4 All 9 or better 26   16   16
6061-T6 Up thru .249 15 or better 38   35   8
  .250 and over   38   35   10
6063 Alloy Specification Other
SI FE CU MN MG CR ZN TI Each Total Aluminum Content
.20-.6 .35 .10 .10 .45-.9 .10 .10 .10 .05 .15 Remainder
See Footnotes Below

6005A Alloy Specification              Other  
SI FE CU MN MG CR Each Total Aluminum Content
.50-.90 .35 .30 .50 .40-.70 .30 .05 .15 Remainder
See Footnotes Below                
6061 Alloy Specification                 Other  
SI FE CU MN MG CR ZN TI Each Total Aluminum Content
.40-.80 .70 .15-.40 .15 .80-1.2 .04-.35 .25 .15 .05 .15 Remainder
See Footnotes Below                    
  • SI - Silicon
  • FE - Iron
  • CU - Copper
  • MN - Manganese
  • MG - Magnesium
  • CR - Chromium
  • ZN - Zinc
  • TI - Titanium
  • All compositions in percent maximum unless shown as a range or a minimum.