|
TYPICAL ANALYSIS
|
|
|
C.
|
Mn.
|
Cr.
|
V.
|
|
0.50%
|
0.75%
|
1.00%
|
0.15%
|
Forging:
Forge at 1050°C. Do not work this steel when it has fallen below 840°C.
Annealing:
Slow furnace cool from 840°/860°C.
Hardening:
Pre heat slowly to 650/700°C and thoroughly soak. Continue heating to the final hardening temperature of 850/870°C and allow the component to be heated through. Quench in oil.
Tempering:
Temper immediately after quenching whilst tools are still hand warm. Re-heat to the tempering temperature, soak for one hour per 25 millimetre of total thickness, 2 hours minimum, then cool in air. For most applications tempering will be between 400°/600°C.
| Tempering °C |
100
|
200
|
300
|
400
|
450
|
500
|
550
|
600
|
|
HRc
|
56
|
53
|
50
|
49
|
46
|
44
|
40
|
36
|
