Chemical Composition% :
| C |
Mn |
Si |
S |
P |
Cr |
Ni |
Mo |
| .90-1.20 |
.30-.75 |
.10-.35 |
.04 |
.04 |
1.0-1.60 |
- |
- |
Annealing :
Heat uniformly to 800°C, equalise, then furnace cool. (Hardness about
229 Brinell).
Hardening :
Heat uniformly to 800/820°C until heated through. Allow 30 minutes per
inch of ruling section and quench immediately in oil.
Stress Relieving :
If machining operations have been heavy or if the tool has an unbalanced
section, remove stresses before hardening by heating up to 700°C,
equalise, then cool slowly.
Tempering :
Heat uniformly and thoroughly at the selected tempering temperatures and
hold for at least one hour per inch of total thickness.
Applications :
Ball and Roller Bearings, Spinning tools, Beading Rolls, Punches and Dies
Additional Information : Item Code: En-31
