| |
DeCarb
Free Tool Steel Bar
AISI
L-6 |
| Description |
| L-6
is a tough, oil-hardening tool steel possessing a fine-grained structure
and desirable shock resistance. L-6 is also associated with high
strength and good non-deforming characteristics.
|
| Typical
Applications |
- Forming
rolls
-
Spindles
- Punches
- Trim
dies
- Embossing
dies
- Forming
dies
- Shear
blades
- Blanking
dies
|
| Chemical
Composition |
- Carbon:
.65 / .75
- Manganese:
.25 / .80
- Silicon:
.50 max.
- Tungsten:
--
- Molybdenum:
.50 max.
- Chromium:
.60 / 1.20
- Vanadium:
.30 max.
- Nickel:
1.25 / 2.00
|
| Heat
Treatment Data |
- Forging:
(note a)
- Start
forging at: 1800-2000°F (982-1093°C)
- Do
not forge below: 1550°F (843°C)
- Normalizing:
(note b)
- Annealing:
(note c)
- Temperature:
1400-1450°F (760-788°C)
- Rate
of cooling, max. per hour: 40°F (22°C)
- Typical
annealed hardness, Brinell: 183-255
- Hardening:
- Rate
of heating: Slowly
- Hardening
temperature: 1450-1550°F (788-843°C)
- Time
at temperature, minutes: 10-30 (note j)
- Quenching
medium: O (note i)
- Tempering:
- Tempering
temperature: 350-1000°F (177-538°C)
- Approx.
tempered hardness, Rockwell C: 45-62
- Wear
Resistance: Medium
- Toughness:
Very High
- Resistance
to Softening Effect of Elevated Temperature: Low
- Depth
of Hardening: Medium
- Machinability:
Medium
- Grindability:
High
- Distortion
in Heat Treating: Low
- Safety
in Hardening: Medium
- Resistance
to Decarburization: High
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