| Steel designation | Chemical composition, % by mass | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steel Name | Steel Number | C | Si max. | Mn | P max. | S | Cr | Cu | Mo | Nb | Ni | Others | |
| X39CrMo17-1 | 1.4122 | 0,33 to 0,45 | 1,00 | ≤ 1,50 | 0,040 | ≤ 0,030b | 15,5 to 17,5 | - | 0,80 to 1,30 | - | ≤ 1,00 | - | |
| Steel designation | Thickness t or diameter a d | Heat treatment conditionb | Hardness | 0,2 %-proof strength | Tensile Strength | Elongation after fracture | Impact energy (ISO-V) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steel Name | Steel Number | mm | HBc max. |
Rp0,2d MPa*) min. |
R m d MPa*) |
Ad % min. |
KV J min |
||||||||
| (long.) | (tr.) | (long.) | (tr.) | ||||||||||||
| Standard grades | |||||||||||||||
| X39CrMo17-1 | 1.4122 | - | +A | 280 | - | max. 900 | - | - | - | - | |||||
| ≤ 60 | +QT750 | - | 550 | 750 to 950 | 12 | - | 20 | - | |||||||
| 60 < t ≤ 160 | 14 | - | |||||||||||||
| a Width across flats for hexagons. | |||||||||||||||
| b +A = annealed, +QT = quenched and tempered. | |||||||||||||||
| c Only for guidance. | |||||||||||||||
| d For rods, only the tensile strength values apply. | |||||||||||||||
| *) 1MPa = 1 N/mm². | |||||||||||||||