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)
-
Do
not normalize
-
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.
-
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
temperature: 300-1200°F (149-649°C)
Approx.
tempered hardness, Rockwell C: 26-54
| 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 |