Quenching and tempering consists of a two-stage heat-treatment process. Stage one includes hardening, in which the steel is austenitized to approximately 900°C and then quickly cooled with water or oil. Stage two consists of tempering the material to obtain the desired material properties. Quenching and tempering achieves a fine-grained and homogeneous microstructure. Quenched and tempered steel is characterized by high strength and good ductility.
|
EN-standard |
Ovako |
Typical analysis |
||||||
|
C |
Si |
Mn |
Cr |
Mo |
Ni |
Other |
||
|
24CrMo13-6 |
0.24 |
0.2 |
0.4 |
3.1 |
0.5 |
|
|
|
|
25CrMo4 |
0.25 |
0.2 |
0.9 |
1.1 |
0.2 |
|
|
|
|
34CrMo4 |
0.34 |
0.3 |
0.8 |
1.1 |
0.2 |
|
V |
|
|
42CrMo4 |
0.42 |
0.3 |
0.8 |
1.1 |
0.2 |
|
|
|
|
43CrMnMo4-4 |
0.43 |
0.3 |
0.9 |
1.0 |
0.2 |
|
|
|
|
44CrMnMo4-4* |
0.44 |
0.3 |
0.9 |
1.0 |
0.2 |
|
|
|
|
50CrMo4 |
0.51 |
0.2 |
0.7 |
1.0 |
0.2 |
|
|
|
| 23MnNiMoCr5-4 | 4209 |
0.23 |
0.2 |
1.3 |
0.5 |
0.6 |
1.0 |
|
| 30CrNiMo8 | 6507 |
0.30 |
0.3 |
0.7 |
2.0 |
2.0 |
0.3 |
|
| 30NiCrMo16-6 | 498 |
0.30 |
0.3 |
0.5 |
1.4 |
0.2 |
4.0 |
|
| 31NiCrMo13-4* | 453 |
0.31 |
0.2 |
0.5 |
1.1 |
0.2 |
3.1 |
|
| 34CrNiMo6 | 356, 6502 |
0.34 |
0.2 |
0.7 |
1.4 |
0.2 |
1.3 |
|
|
40SiCrMnMo7-6-6* |
477 |
0.40 |
1.7 |
1.5 |
1.5 |
0.4 |
|
|
| 40CrMoV4-6 | 6098 |
0.40 |
0.3 |
0.7 |
1.1 |
0.6 |
|
V |
|
21CrMoV5-7* |
0.21 |
0.3 |
0.6 |
1.4 |
0.7 |
|
V |
|
| 37CrV3* |
9217 |
0.37 |
0.3 |
0.8 |
0.8 |
|
|
V |
| 40NiCrMo7-3* |
0.40 |
0.3 |
0.7 |
0.8 |
0.3 |
1.8 |
V |
|
| 32CrMoV12-10* |
0.32 |
0.3 |
0.5 |
3.0 |
1.0 |
|
V |
|
|
30CrMoV9 |
0.31 |
0.2 |
0.6 |
2.5 |
0.2 |
|
V |
|
|
40CrMoV4-6* |
0.42 |
0.2 |
0.8 |
1.1 |
0.9 |
4.0 |
V |
|
|
48CrMoNi4-10* |
0.48 |
0.2 |
0.8 |
1.1 |
0.9 |
4.0 |
V |
|
|
42NiSiCrMo8-7-3* |
0.42 |
1.6 |
0.6 |
0.7 |
0.3 |
1.7 |
V |
|
|
4CrMn16-4* |
0.04 |
0.3 |
1.0 |
4.0 |
|
|
Nb |
|
|
7CrMoBS4* |
0.07 |
0.3 |
0.8 |
1.3 |
|
|
B |
|
|
8CrMnMo15-4* |
0.08 |
0.3 |
1.0 |
4.0 |
0.5 |
|
|
|
EN-standard designation followed by “*” is not an official EN standard grade but named according to the rules in EN 10027.
We made it! But we are still not satisfied
What a journey! It took years of hard work to make our steelmaking operations more sustainable. In 2022, we went carbon neutral in all operations. But we´re still not satisfied - our journey towards steel production without CO2 emissions continues.
Read more about our path to carbon neutrality
