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H-13
Chemical
Analysis: |
|
|
Tempering Temp.
º(F) |
Hardness Rc |
|
Carbon
|
.32/.45
|
|
As-quenched |
54.0 |
| Manganese |
.20/.50 |
|
400 |
54.0 |
| Phosphorus |
.030
Max. |
|
500 |
53.0 |
| Sulfur |
.030
Max. |
|
600 |
53.0 |
| Silicon |
.80/1.20 |
|
700 |
53.0 |
| Chromium |
4.75/5.50 |
|
800 |
53.0 |
| Vanadium |
.80/1.20 |
|
900 |
54.0 |
| Tungsten |
------- |
|
1000 |
53.0 |
| Molybdenum |
1.10/1.75 |
|
1100 |
46.0 |
| Cobalt |
------- |
|
1200 |
36.0 |
Uses:
Extrusion dies, forge dies, slitter knives, hot shears,
trimmer dies, gripper dies, die casting dies, heading dies, pneumatic
tools.
Forging/Rolling:
Preheat slowly to 1300°
F - 1500° F and soak thoroughly. Then raise to
2050° F
- 2150° F.
Do not forge or roll below 1650° F,
cool slowly from the forging or rolling temperature. Do not normalize.
Annealing:
Heat slowly to 1600° F,
and hold for uniformity, cool at a rate of 30°
F per hour to 900° F, then air cool. Expected Brinell hardness
207 max.
Hardening:
Preheat to 1300° F
- 1400° F, soak until uniformly heated, and either
transfer or raise furnace temperature to 1850°
F, and hold 1 hour per inch of greatest thickness. Quench
in still air and temper without delay.
Tempering:
Temper immediately after quenching, before part has
cooled to below 150° F. Parts should be held a minimum of
2 hours per inch of greatest thickness. Double tempering is recommended
for the H-13 grade. For most applications, H-13 should be tempered
in the 1100° F - 1150° F range.
The above 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.
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