Typical properties in the annealed condition
The properties quoted in this publication are typical of mill product and unless indicated should not be regarded as guaranteed minimum values for design purposes. For these purposes refer to the relevant specification.
Mechanical properties at room temperature
| |
Typical |
Minimum |
| Tensile Strength, MPa |
530 |
450 |
| Proof Strength, 0.2 % , MPa |
360 |
205 |
| Elongation (Percent in Lo=5.65 So) MPa |
25 |
22 |
| Hardness |
160 |
- |
Properties at elevated temperatures
Short time elevated temperature tensile strength
| Temperature, oC |
300 |
400 |
550 |
650 |
750 |
| Strength, MPa |
450 |
430 |
220 |
120 |
50 |
Creep data
Stress for a creep rate of 1% in 10 000 h
| Temperature, oC |
550 |
600 |
650 |
700 |
750 |
| Stress, MPa |
50 |
30 |
15 |
5 |
3 |
Recommended maximum service temperature
(Oxidising Conditions)
Continuous Service 750 oC
Intermittent Service 850 oC
Note: Service in the temperature range 425 -525 oC for over 100 hours will cause the steel to be brittle on cooling to room temperature.
