C45 STEEL
Low-alloy steel for toughening, hard to weld, easy to make a treatment.
Its purpose:
on average overburdened machines' elements or devices such as spindles, axles, arbors, untempered gears, electric motor's arbors, shields, screws, arms, knives, corkscrews, naves, rods, cylinders, and rotor bars. The products can be tempered subaerially getting the toughness up to 30-35 HRC.
Chemical composition [%]
| C | MN | SI | P | S | CR | NI | MO | W | V | AL | CU |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0,42-0,5 | 0,5-0,8 | 0,1-0,4 | max 0,04 | max 0,04 | max 0,3 | max 0,3 | max 0,1 | - | - | - | max 0,3 |
Analogs:
| POLISH NORMS |
W.NR | EN | AISI | RUSSIA (GOST) |
OTHERS |
|---|---|---|---|---|---|
| 45 | 1.0503 | C45 | 1045 | 45 | 12050 |
Analogs:
| WELDING | HARD TO WELD | |
|---|---|---|
| forging | YES | temp. 850 - 1100 [°C] |
| rolling | YES | temp. 850 - 1100 [°C] |
| nitriding | NO | - |
| quenching | YES | temp. 820 - 860 [°C] |
| tempering | YES | temp. 550 - 660 [°C] |
| Soft annealing | YES | temp. 650 - 700 [°C] |
Mechanical properties:
| Tensile strength Rm | 560-850 |
| Elongating A5 (%) | 14-17 |
| Necking down Z (%) | 35-45 |
| Yield strength Re | 275-490 |
| Breaking work KU2 (J) | >=25 |
| Compression modulus of elasticity E (GPa) | 198-207 |
| Toughness (after softening) HB | <=229 |