ČSN 12 050 / 1.1191 / C45
CZK 0
Characteristics
Carbon steel for heat treatment and surface hardening.
Suitability
Suitable for shafts of mining machines, turbo-compressors, carousels and so on. For bigger cogwheels, screws, gear rings, rotors of screw compressors, connecting rods, piston rods, spindles, plungers, pistons of compressors, pegs, screws, transport rollers, clutch disks, rollers, sockets, levers, stops, pins, connecting components, shunting forks, holders, carriers of satellites, beams, pawls, forged bolts of pressure containers, boring rods and cutter arbors.
Chemical composition of steel ČSN 12 050
| Steel grade | Chemical composition in % | Hardness in the state | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Soft annealed | Heat-treated | ||||||||||||
| C | Mn | Si | Cr | W | Mo | V | Ni max | Co | P max. | S max. | HB max. | HRC min. | |
| DIN is not | |||||||||||||
| ČSN 12 050 | 0,42-0,50 | 0,50-0,80 | max 0,40 | max 0,40 | max 0,10 | 0,40 | 0,045 | 0,045 | 208 | ||||
Heat treatment of steel ČSN 12 050
| Way | Temperature [°C] | Procedure | |
|---|---|---|---|
| Normalization | 840-870 | Cool in air | |
| Hardening | 830-860 | Cool in oil | |
| 800-830 | Cool in water | ||
| Soft annealing | 680-720 | Cool in furnace | |
| Tempering | 530-670 | Cool in air | |
Note
- Kind of steel according to the way of production – hearth, electric steel or oxygen convertor - killed
- Coloured marking according to ČSN 42 0010 - green/red/black
- Class of waste according to ČSN 42 0030 - 002
