EN 10269 20CrMoVTiB4-10 / 1.7729
This European Standard specifies requirements for semi-finished products, bars and rods for fasteners with
properties specified at elevated and/or low temperatures made of non-alloy and alloy (including stainless)
steels and nickel alloys as given in Table 1.
The requirements of this standard may be applied also to the finished fasteners.
The general technical delivery conditions in EN 10021 also apply to products supplied in accordance with this
European Standard.
Grade 20CrMoVTiB4-10 Chemical Composition
| Material designation |
Chemical composition, % by mass |
| Element |
Number |
C |
Si |
Mn |
P max. |
S max. |
Altot |
B |
Cr |
Mo |
Ni |
V |
Others |
| 20CrMoVTiB4-10 |
1.7729 |
0,17 to 0,23 |
≤ 0,40 |
0,35 to 0,75 |
0,020 |
0,015 b |
0,015 to 0,080 |
0,001 to 0,010 |
0,90 to 1,20 |
0,90 to 1,10 |
≤ 0,20 |
0,60 to 0,80 |
Ti: 0,07 to 0,15 As: ≤ 0,020 Sn: ≤ 0,020 Cu: ≤ 0,20 |
Grade 20CrMoVTiB4-10 Mechanical Properties
| Material designation |
Heat treatment condition a |
Diameter c (d mm) |
Proof strength (Rp0,2 MPa min.) |
Tensile strength (Rm MPa) |
Elongation after fracture (A % min) |
Reduction in area (Z % min) |
Impact energy (ISO-V) at 20 °C (KV2 J min) |
| Name |
Number |
| 20CrMoVTiB4-10 |
1.7729 |
+QT |
d ≤ 100 |
660 |
820 to 1 000 |
15 |
50 |
40 |
| 100 < d ≤ 160 |
660 |
820 to 1 000 |
15 |
50 |
27 |