O-6
Chemical
Analysis: |
|
|
Tempering Temp.
º(F) |
Hardness Rc |
|
Carbon
|
1.25/1.55
|
|
As-quenched |
65.0 |
| Manganese |
.30/1.10 |
|
300 |
62.0 |
| Phosphorus |
.030
Max. |
|
400 |
61.0 |
| Sulfur |
.030
Max. |
|
500 |
60.0 |
| Silicon |
.55/1.50 |
|
600 |
58.0 |
| Chromium |
30 Max. |
|
700 |
54.0 |
| Vanadium |
------- |
|
800 |
50.0 |
| Tungsten |
------- |
|
900 |
47.0 |
| Molybdenum |
.20/.30 |
|
1000 |
40.0 |
| Cobalt |
------- |
|
1100 |
37.0 |
|
|
|
1200 |
26.0 |
Uses:
Punches, dies, trim dies, blanking dies, forming dies,
stamping dies.
Forging/Rolling:
Preheat to 1300° F
and soak thoroughly. Then raise temperature and forge or roll
to 2000° F
max. Do not forge or roll below 1700°
F, cool slowly from the forging or rolling temperature.
Do not normalize.
Annealing:
Heat slowly to a range of 1425°
F - 1450° F and soak thoroughly.
Furnace cool slowly to 1000° F, remove
and air cool. Expect Brinell hardness 217 max.
Hardening:
Preheat at 1250° F
and soak thoroughly, then heat to 1450°
F - 1500° F, and hold 1 hour per inch of greatest thickness.
Oil quench to 150° F and temper without
delay.
Tempering:
Temper before the parts have cooled to below 150° F. Small parts should be held a minimum of 1 hour
per inch of greatest thickness and large parts 2 hours per inch of greatest
thickness. A single temper is sufficient. For the majority
of tooling work tempering at 300° F - 400° F
is satisfactory. The following tempering table may be used as
a guide. However, since 1/2" dia. specimens were used for
this test, it may be found that heavier sections are several points
lower.
© Copyright 1999 Diamond Metals Corporation.
All Rights Reserved.
|
