BÖHLER T550
Components featuring elevated high-temperature strength for use in thermal engines and power plants, such as turbine blades, turbine discs, screws, bolts, pins and shafts.
Melting Route
VID
Property Features
Creep resisting steel, hardened and tempered. Usual upper temperature limit for continuous operating at 580°C.
Material Numbers
- Market grade
- ST12T
- Market grade
- ST12TE
- Market grade
- X22
- SEL
- 1.4922
- SEL
- 1.4923
- EN
- X20CrMoV11-1
- EN
- X22CrMoV12-1
Standards
- EN ISO
- 10088-1
- EN ISO
- 10216-2
- EN ISO
- 10222-2
- EN ISO
- 10302
- ASTM
- A370
Chemical Composition
* Chemical Composition (Average %)
- C
- 0.22
- Si
- 0.25
- Mn
- 0.70
- Cr
- 11.40
- Mo
- 0.95
- Ni
- 0.70
- V
- 0.30