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P20 Tool Steel Technical Data
- Carbon:
.35
- Manganese:
.80
- Silicon:
.50
- Tungsten:
--
- Molybdenum:
.45
- Chromium:
1.70
- Vanadium:
--
- Nickel:
--
- Forging:
- Start
forging at: 2000°F (1093°C)
- Do
not forge below: 1700°F (927°C)
- Normalizing:
- Annealing:
- Temperature:
1450-1500°F (788-816°C)
- Rate
of cooling, max. per hour: 30°F per hour to 1000°F
- Typical
annealed hardness, Brinell: 207 max.
- Hardening:
- Rate
of heating: Slowly
- Hardening
temperature: 1500-1600°F (816-871°C)
- Time
at temperature, minutes: 60 minutes per inch of thickness
- Quenching
medium: O
- Tempering:
- Tempering
temperature: 300-1200°F (149-649°C)
- Approx.
tempered hardness, Rockwell C: 26-54
- Wear
Resistance: Low to Medium
- Toughness:
Very High
- Resistance
to Softening Effect of Elevated Temperature: High
- Depth
of Hardening: Medium
to Deep
- Machinability:
Medium
- Grindability:
Medium
- Distortion
in Heat Treating: Low
- Safety
in Hardening: High
- Resistance
to Decarburization: High
| Density |
0.284 lb/in³ |
| Hardness, Rockwell C |
30 |
| Tensile Strength |
140000 - 150000 psi |
| Tensile Strength, Yield |
120000 - 125000 psi |
| Elongation at Break |
20 % |
| Modulus of Elasticity |
29700 ksi |
| Compressive Strength |
125000 psi |
| Charpy Impact |
20 - 25 ft-lb |
| CTE, linear 68°F |
7.1 µin/in-°F |
| Thermal Conductivity |
201 - 236 BTU-in/hr-ft²-°F |
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