Table1 Mechanical properties of 1095 steel heat treated by three methods:
Test |
Heat treatment |
Hardness
HRC |
Impact
Strength J ft.ib |
Elongation
in 25mm % |
1 |
Water quenched and tempered |
53.0 |
16 |
12 |
- |
2 |
Water quenched and tempered |
52.5 |
19 |
14 |
- |
3 |
Martempered and tempered |
53.0 |
38 |
28 |
- |
4 |
Martempered and tempered |
52.8 |
33 |
24 |
- |
5 |
Austemperd |
52.0 |
61 |
45 |
11 |
6 |
Austemperd |
52.5 |
54 |
40 |
8 |
(Data from ASM metals Hand book)
Table2 Comparison of typical mechanical properties of austempered and of oil quenched and tempered sway bars of 1090 steel:
Property(a) |
Austempered
at 400°C(750°F) (b) |
Quenched and
tempered (c) |
| Tensile strength, MPa(ksi) |
1415(205) |
1340(200) |
| Yield strength, MPa(ksi) |
1020(148) |
895(130) |
| Elongation.% |
11.5 |
6.0 |
| Reduction of area,% |
30 |
10.2 |
| Hardness, HB |
415 |
388 |
| Fatigue cycles(d) |
105000(e) |
58600(f) |
| Remarks: |
| |
(a)Average values. |
(d)Fatigue specimens 21mm (0.812 in.) in diameter. |
| |
(b)Six tests. |
(e)Seven tests; range, 69050 to 137000. |
| |
(c)Two tests. |
(f)Eight tests; range, 43 120 to 95 220. |
| 