COMMON GRADES

3003 – This grade is alloyed with 1.2% manganese to provide a tensile strength range of 17,000 to 30,000 PSI as well as excellent workability and corrosion resistance. Used for drawing, spinning, fuel tanks, sheet metal work and other applications where slightly higher strength than 1100 is required. Non-heat treatable.

5052 – This grade is alloyed with 0.8% magnesium for a tensile strength of 31,000 to 44,000 PSI, very good corrosion resistance, good workability, weldability and strength. Used for aircraft fuel tanks,   storm shutters, utensils, electronic mounting plates, etc. Non-heat treatable.

6061 – This grade is alloyed with 0.8% magnesium and 0.6% silicon for tensile strength of 20,000 to 42,000 PSI and good weldability and corrosion resistance. Used for engineering and structural applications, furniture, boats, transportation equipment, etc. Heat treatable.

COMMON TEMPER DESIGNATIONS

The first digit following the H indicates the specific combination of basic operations, as follows:
H1 – Strain-hardened only.
H2 – Strain-hardened and partially annealed.
H3 – Strain-hardened and stabilized.

The first digit following the T indicates specific sequences of basic treatments, as follows:
T4 – Solution heat-treated and naturally aged to substantially stable condition.
T6 – Solution heat-treated and artificially aged.

The following additional digits have been assigned for stress-relieved tempers of wrought products:

T51 – Stress relieved. Applies to plate and rolled or cold finished rod and bar when stretched after solution heat treatment, or after cooling from an elevated temperature shaping process. No further straightening after stretching.

T511 – Stress relieved. Applies to extruded bar, rod, shapes and tube when stretched after solution heat treatment, or after cooling from an elevated temperature shaping process. May receive minor straightening after stretching to comply with standard tolerances.