S-5 Air Hardening tool Steel
Flats - Rounds - Squares - Hollowbar
Standard Sizes - Non-Standard Sizes - Metric Sizes
TREATMENT |
TEMPERATURE RANGE |
COOLING/QUENCHING |
NOTES |
FORGING |
1825-1925° F |
Slow. |
Cool slowly in furnace or in other insulating media. |
ANNEALING |
1450-1500° F |
Cool slowly at a rate of 25° F per hour to 1000° F. |
Hold at temperature for 2 hours. |
STRESS RELIEVING |
1000-1250° F |
Cool slowly |
Stress relieve after rough machining |
PREHEATING |
1200-1250° F |
|
Preheat time in furnace is ¾ Hr. per inch of thickness. Heating up to temperature as slow as possible. |
HARDENING |
1575-1650° F (water)
1600-1700° F (oil) |
In water.
In oil. |
Allow to cool to 125-150° F before tempering. Soak time is 10 minutes per inch of thickness. Minimum of 30 minutes. Oil quenching is preferred for intricate parts. |
TEMPERING |
(See Chart) |
|
Temper immediately after hardening and quenching. For maximum hardness temper at 300-350° F. For maximum toughness temper at 900-1000° F. |
Data is typical and should not be construed as actual values for any catagory.
Applications and technical information require engineers and tool designers to exercise independent judgement.