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AISI 4140H |
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| Conditions | Tensile Properties |
| T (°C) | Treatment |
| 25 |
annealed |
Tensile Strength (MPa) |
655 |
| Yield Strength (MPa) |
485 |
| Elongation (%) |
26 |
| Reduction in Area (%) |
52 |
| 25 |
annealed at 815°C |
Tensile Strength (MPa) |
655 |
| Yield Strength (MPa) |
420 |
| Elongation (%) |
25.7 |
| Reduction in Area (%) |
57 |
| 25 |
heat treated, oil-quenched, and tempered at 205°C |
Tensile Strength (MPa) |
1795 |
| Yield Strength (MPa) |
1515 |
| Elongation (%) |
8 |
| Reduction in Area (%) |
32 |
| 25 |
heat treated, oil-quenched, and tempered at 315°C |
Tensile Strength (MPa) |
1585 |
| Yield Strength (MPa) |
1345 |
| Elongation (%) |
11 |
| Reduction in Area (%) |
40 |
| 25 |
heat treated, oil-quenched, and tempered at 425°C |
Tensile Strength (MPa) |
1380 |
| Yield Strength (MPa) |
1170 |
| Elongation (%) |
15 |
| Reduction in Area (%) |
48 |
| 25 |
heat treated, oil-quenched, and tempered at 540°C |
Tensile Strength (MPa) |
1140 |
| Yield Strength (MPa) |
965 |
| Elongation (%) |
18 |
| Reduction in Area (%) |
56 |
| 25 |
heat treated, oil-quenched, and tempered at 650°C |
Tensile Strength (MPa) |
931 |
| Yield Strength (MPa) |
793 |
| Elongation (%) |
22 |
| Reduction in Area (%) |
63 |
| 25 |
normalized at 870°C |
Tensile Strength (MPa) |
1020 |
| Yield Strength (MPa) |
655 |
| Elongation (%) |
17.7 |
| Reduction in Area (%) |
47 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 205°C |
Tensile Strength (MPa) |
1965 |
| Yield Strength (MPa) |
1735 |
| Elongation (%) |
11 |
| Reduction in Area (%) |
42 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 260°C |
Tensile Strength (MPa) |
1860 |
| Yield Strength (MPa) |
1655 |
| Elongation (%) |
11 |
| Reduction in Area (%) |
44 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 315°C |
Tensile Strength (MPa) |
1725 |
| Yield Strength (MPa) |
1572 |
| Elongation (%) |
11.5 |
| Reduction in Area (%) |
46 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 370°C |
Tensile Strength (MPa) |
1595 |
| Yield Strength (MPa) |
1460 |
| Elongation (%) |
12.5 |
| Reduction in Area (%) |
48 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 425°C |
Tensile Strength (MPa) |
1450 |
| Yield Strength (MPa) |
1345 |
| Elongation (%) |
15 |
| Reduction in Area (%) |
50 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 480°C |
Tensile Strength (MPa) |
1295 |
| Yield Strength (MPa) |
1205 |
| Elongation (%) |
16 |
| Reduction in Area (%) |
52 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 540°C |
Tensile Strength (MPa) |
1150 |
| Yield Strength (MPa) |
1050 |
| Elongation (%) |
17.5 |
| Reduction in Area (%) |
55 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 595°C |
Tensile Strength (MPa) |
1020 |
| Yield Strength (MPa) |
910 |
| Elongation (%) |
19 |
| Reduction in Area (%) |
58 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 650°C |
Tensile Strength (MPa) |
896 |
| Yield Strength (MPa) |
786 |
| Elongation (%) |
21 |
| Reduction in Area (%) |
61 |
| 25 |
normalized at 870°C, reheated to 845°C, quenched in oil, tempered at 705°C |
Tensile Strength (MPa) |
807 |
| Yield Strength (MPa) |
689 |
| Elongation (%) |
23 |
| Reduction in Area (%) |
65 |
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