1.7378 (7CrMoVTiB10-10)
Classification
| Country |
Section |
Category |
| Germany |
Structural, Pressure Vessel and Engineering Steels |
Cr-Mo with Mo ≥ 0.35% |
Chemical composition
| Standard |
Fe, % |
Si, % |
B, % |
Mn, % |
Cr, % |
Ti, % |
V, % |
Al, % |
P, % |
C, % |
S, % |
Mo, % |
N, % |
|---|
|
94.583–96.1485 |
0.15–0.45 |
0.0015–0.007 |
0.3–0.7 |
2.2–2.6 |
0.05–0.1 |
0.2–0.3 |
< 0.02 |
< 0.02 |
0.05–0.1 |
< 0.01 |
0.9–1.1 |
< 0.01 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{0.2}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\epsilon_T$$, % |
$$KV_{L}$$, $$J$$ |
$$KV_{T}$$, $$J$$ |
Treatment |
|---|
|
|
|
|
Hardening, normalization |
565–840 |
|
17 |
15 |
40 |
27 |
|
|
|
< 16 |
|
Hardening, normalization |
|
450 |
|
|
|
|
|
|
|
16–60 |
|
Hardening, normalization |
|
430 |
|
|
|
|
|
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| B |
% |
Bor |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Ti |
% |
Titan |
| V |
% |
Vanadium |
| Al |
% |
Aluminium |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Mo |
% |
Molybdenum |
| N |
% |
Nitrogen |
Description of mechanical properties
| Parameter |
Units of measurement |
Description |
| $$\sigma_{0.2}$$ |
$$MPa$$ |
Tensile stress required to produce a total elongation of 0.2% |
| $$\sigma _{U}$$ |
$$MPa$$ |
Ultimate tensile strength |
| $$\epsilon_L$$ |
% |
Elongation at break (longitudinal) |
| $$\epsilon_T$$ |
% |
Elongation at break (transverse) |
| $$KV_{L}$$ |
$$J$$ |
Impact energy (longitudinal) |
| $$KV_{T}$$ |
$$J$$ |
Impact energy (transverse) |