Element | Content (%) |
C | 0.40-0.55 |
Mn | 0.10-0.40 |
Si | 0.15-1.20 |
Cr | 1.00-1.80 |
Ni | 0.3 |
Mo | 0.5 |
V | 0.15-0.30 |
Cu | 0.25 |
P | 0.03 |
S | 0.03 |
W | 1.50-3.00 |
Diameter(mm) | Thickness(mm) | Width(mm) | Length(mm) | |
Round | 20-480 | - | - | 2000-5800 |
Square | 20-480 | - | - | 2000-5800 |
Flat | - | 2-150 | 80-600 | 2000-5800 |
Properties | Metric | Imperial |
Hardness, Rockwell C (air cooled from 899°C, 30 mins) | 54.5 | 54.5 |
Hardness, Rockwell C (air cooled from 927°C, 30 mins) | 56 | 56 |
Hardness, Rockwell C (air cooled from 982°C, 30 mins) | 56.5 | 56.5 |
Modulus of elasticity | 207 GPa | 30000 ksi |
Charpy impact (V-notch; oil quenched from 954°C; 149°C temper temperature) | 10.8 J | 8.00 ft-lb |
Charpy impact (V-notch; oil quenched from 954°C; 625°C temper temperature) | 29.8 J | 22.0 ft-lb |
Machinability (1% carbon steel) | 70.0 - 75.0% | 70.0 - 75.0% |
Poisson's ratio | 0.27-0.30 | 0.27-0.30 |