Product Form |
AMS Specifications |
Heat Treatment |
Remarks |
Rods, bars and forgings |
5667 |
1625°F/24 hr, AC, + 1300°F/20 hr, AC(Equalizing plus precipitation treatment). |
High strength and notch rupture ductility up to 1100°F. |
Rods, bars and forgings |
5670,5671,& 5747 |
1800°F anneal + 1350°F/8 hr, FC to 1150°F, Hold at 1150°F for total precipitation-treating time of 18 hr, AC (Solution treatment plus furnace-cool precipitation treatment). |
Increased tensile properties and reduced heat treating time for service up to about 1100°F. |
Rods, bars and forgings |
- |
1800°F anneal + 1400°F/1 hr, FC to 1150°F, Hold at 1150°F for total precipitation-treating time of 6 hr, AC (Solution treatment plus short furnace-cool precipitation treatment). |
Short furnace-cool aging. Achieves only slightly lower properties than does AMS 5670 and AMS 5671. |
Rods, bars and forgings |
5668 |
2100°F anneal + 1550°F/24 hr, AC, + 1300°F/20 hr, AC (Triple heat treatment). |
Maximum creep, relaxation and rupture strength above about 1100°F. |
Sheet, strip and plate (Supplied in annealed condition) |
5542 |
1300°F/20 hr, AC (Constant-temperature precipitation treatment). |
High strength to 1300°F. |
Sheet, strip and plate (Supplied in annealed condition) |
5598 |
1350°F/8 hr, FC to 1150°F, Hold at 1150°F for total precipitation-treating time of 18 hr, AC (Furnace-cool precipitation treatment). |
High strength up to 1300°F (Increased tensile properties to about 1100°F). |
Sheet, strip and plate (Supplied in annealed condition) |
- |
1400°F/1 hr, FC to 1150°F, Hold at 1150°F for total time of 6 hr, AC (Short furnace-cool precipitation treatment). |
Increased tensile properties and reduced heating time for service up to about 1100°F. |
Seamless tubing |
5582 |
1300°F/20 hr, AC (Constant-temperature precipitation treatment). |
High strength up to about 1300°F. |
Wire, No. 1 temper |
5698 |
1350°F/16 hr, AC (Constant-temperature precipitation treatment). |
For springs requiring optimum resistance to relaxation from about 700°F to 850°F and at low to moderate stresses to about 1000°F. |
Wire, spring temper |
5699 |
1200°F/4 hr, AC (Constant-temperature precipitation treatment). |
High strength up to about 700°F. |
Wire, spring temper |
5699 |
2100°F anneal + 1550°F/24 hr, AC + 1300°F/20 hr, AC (Triple heat treatment). |
For springs for service requiring maximum relaxation resistance at about 850°F to 1200°F. |