Heat Treatment
HAYNES® 230® alloy is normally final solution heat-treated at 2250°F (1230°C) for a time commensurate with section thickness. Solution heat-treating can be performed at temperatures as low as about 2125°F (1165°C), but resulting material properties will be altered accordingly. Annealing during fabrication can be performed at even lower temperatures, but a final, subsequent solution heat treatment is needed to produce optimum properties and structure. Please refer to following sections and publication click here for additional information.
Typical Hardness Properties
Effect of Cold Reduction Upon Room-Temperature Tensile Properties*
| Cold
Reduction
|
Subsequent
Anneal
Temperature
|
Yield Strength
0.2% Offset
|
Ultimate
Tensile
Strength
|
Elongation
|
| %
|
None |
ksi
|
MPa
|
ksi
|
MPa
|
%
|
| 0 |
61.8 |
425 |
128.2 |
885 |
46.6 |
| 10 |
104.0 |
715 |
144.5 |
995 |
31.8 |
| 20 |
133.4 |
920 |
163.9 |
1130 |
16.8 |
| 30 |
160.1 |
1105 |
187.5 |
1295 |
9.7 |
| 40 |
172.4 |
1190 |
201.5 |
1390 |
7.5 |
| 50 |
184.6 |
1275 |
214.6 |
1480 |
6.0 |
| 10 |
1950°F (1066°C) |
91.9 |
635 |
143.5 |
990 |
32.9 |
| 20 |
80.8 |
555 |
141.9 |
980 |
35.6 |
| 30 |
75.9 |
525 |
142.1 |
980 |
35.7 |
| 40 |
81.2 |
560 |
145.5 |
1005 |
32.3 |
| 50 |
86.1 |
595 |
147.7 |
1020 |
34.6 |
| 10 |
2050°F (1121°C) |
80.8 |
555 |
139.0 |
960 |
36.5 |
| 20 |
65.4 |
450 |
135.7 |
935 |
39.2 |
| 30 |
72.0 |
495 |
140.0 |
965 |
37.6 |
| 40 |
76.1 |
525 |
142.3 |
980 |
35.5 |
| 50 |
80.8 |
555 |
143.9 |
990 |
36.3 |
| 10 |
2150°F (1177°C) |
55.5 |
385 |
129.5 |
895 |
43.7 |
| 20 |
64.4 |
445 |
134.3 |
925 |
40.1 |
| 30 |
70.2 |
485 |
138.1 |
950 |
38.5 |
| 40 |
73.4 |
505 |
139.2 |
960 |
38.1 |
| 50 |
71.9 |
495 |
137.7 |
950 |
39.1 |
*Based upon rolling reductions taken upon 0.120-inch (3.0 mm) thick sheet.
Duplicate tests.