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Temper Code T
additional codes
T10 |
artificially aged, cold worked. |
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CAVUMark Thu, 08 May 2008 00:22:02 GMT |
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Temper Code T
additional codes
T9 |
solution heat treated, artificially aged, cold worked |
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Temper Code T
additional codes
T8 |
solution heat treated, cold worked, artificially aged |
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Temper Code T
additional codes
T7 |
solution heat treated, stabilized |
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Temper Code T
additional codes
T6 |
solution heat treated, artificially aged |
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Temper Code T
additional codes
T5 |
artificially aged only |
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Temper Code T
additional codes
T4 |
solution heat treated |
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Temper Code T
additional codes
T3 |
solution heat treated, cold worked
most common |
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CAVUMark Thu, 08 May 2008 00:47:14 GMT |
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Temper Code T
additional codes
T2 |
annealed, cast products only |
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Temper Code T
additional codes
T1 |
cooled from hot forming aged process, extrusion |
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CAVUMark Thu, 08 May 2008 00:28:53 GMT |
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Strain Hardened or Cold Worked
Additional information in nomenclature
Hxyz |
H = strain hardened
x - 1=full anneal, 2 = partial, 3=stabilized
y - 2, 4, 6, 8 1/8s % of hardness, 4/8s is 50%.
z - manufacturers code |
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| Stabilizing |
a reduced process from partial annealing
Heat - 350F
Soak - < 1 hours
Quench - still air |
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| Annealing Process - Partial |
removes affects of previous heat treatment and cold working
Heat - 640-670F
Soak - < 2 hours
Quench - rate of 50F/hour to 450F then in still air |
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| Annealing Process - FULL |
removes affects of previous heat treatment
Heat - 750 - 800F
Soak - >2 hours
Quench - rate of 50F/hour to 500F then in still air |
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| Temper Code T |
Heat Treated and Fully Aged |
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| Temper Code O |
Annealed |
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| Temper Code W |
Unstable/ Artificially aged. Transient stage between Solution Heat Treated and aging. |
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| Temper Code H |
Strained Hardened or cold worked |
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| Temper Codes F |
As Fabricated |
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| Artificial aging or Precipitation Heat Treatment Process? |
Hardening and strengthening process similar to Solution Heat Treatment
Heat - 250- 450F
Soak - 6 - 30 hours
Quench - cool in still air |
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CAVUMark Thu, 08 May 2008 00:43:54 GMT |
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| Natural Aging Times to Hardness |
90% hardness in 24 hours
balance in 4-5 days |
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| Solution Heat Treatment Process? |
Heat - 825F to 980F
Soak - 10 to 120 minutes
Rapid Quench - Cold water for sheets, tubing, small forgings, extrusions.(provides corrosion resistance) Hot water for large forgings and items. (Minimizes distorion, prevents cracking).
Spray Quenching - clad sheets, large sections (mins distortion, prevents cracks helps with corrosion prevention) |
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CAVUMark Thu, 08 May 2008 00:22:01 GMT |
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Heat Treatment
Two stage process? |
Stage 1 = Heat - Soak - Quench
Stage 2 = age or (precipitation hardening) = artificially age |
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CAVUMark Thu, 08 May 2008 00:22:01 GMT |
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Alloy nomenclature
x000 series numbers mean? |
1000 - pure AL
2000 - copper
3000 - manganese
4000 - silicon
5000 - magnesium
6000 - magnesium/silicon
7000 - zinc
8000 - experimental |
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CAVUMark Thu, 08 May 2008 05:43:43 GMT |
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| Forms of Aluminum Products |
CAST = accurate to .001 thou.
WROUGHT = rolled or worked after casting |
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CAVUMark Wed, 07 May 2008 23:43:06 GMT |
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4 Digit identification system
ABCD |
A = alloy
B = Experiment Modification #
CD = Experiment Number |
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CAVUMark Wed, 07 May 2008 23:45:37 GMT |
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| Aluminum Advantages |
1/3 weight of steel
Corrosion resistance
easy to work
Good electrical conductor
Good natural finish
high heat and reflectivity |
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CAVUMark Wed, 07 May 2008 23:43:06 GMT |
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