1.7729 (20CrMoVTiB4-10)
Classification
| Country |
Section |
Category |
| Germany |
Structural, Pressure Vessel and Engineering Steels |
Cr-Mo-V |
Chemical composition
| Standard |
Fe, % |
Si, % |
B, % |
Sn, % |
Mn, % |
Cr, % |
Ti, % |
Cu, % |
Ni, % |
V, % |
Al, % |
As, % |
P, % |
C, % |
S, % |
Mo, % |
|---|
| EN 10269 |
94.8–96.994 |
< 0.4 |
0.001–0.01 |
< 0.02 |
0.35–0.75 |
0.9–1.2 |
0.07–0.15 |
< 0.2 |
< 0.2 |
0.6–0.8 |
0.015–0.08 |
< 0.02 |
< 0.02 |
0.17–0.23 |
< 0.02 |
0.9–1.1 |
Information on suppliers
Mechanical properties at 20 °C
| Rolling |
Standard |
Size, mm |
Tension |
Classifiers |
$$\sigma _{U}$$, $$MPa$$ |
$$\sigma_{0.2}$$, $$MPa$$ |
$$\epsilon_L$$, % |
$$\psi$$, % |
$$KV_{L}$$, $$J$$ |
Treatment |
|---|
|
|
|
|
moderate hardening |
820–1000 |
660 |
15 |
50 |
27–40 |
|
Standards
Description of chemical elements
| Element |
Units of measurement |
Description |
| Fe |
% |
Iron |
| Si |
% |
Silicon |
| B |
% |
Bor |
| Sn |
% |
Tin |
| Mn |
% |
Manganese |
| Cr |
% |
Chrome |
| Ti |
% |
Titan |
| Cu |
% |
Copper |
| Ni |
% |
Nickel |
| V |
% |
Vanadium |
| Al |
% |
Aluminium |
| As |
% |
Arsenic |
| P |
% |
Phosphorus |
| C |
% |
Carbon |
| S |
% |
Sulfur |
| Mo |
% |
Molybdenum |
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) |
| $$\psi$$ |
% |
Reduction in cross section on fracture |
| $$KV_{L}$$ |
$$J$$ |
Impact energy (longitudinal) |