
25 February 2025
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Blog
GE POWER NB 00141 Steel bars, Rp0.2 700 MPa min

Dr. Robert Anderson
Senior Materials Scientist
GE POWER NB 00141 Steel bars, Creep resistant, St12T, X22CrMoV12-1, Rp0.2 700 MPa min high alloy steel bars.
Material properties requirements
Chemical composition
Limiting composition in mass % shall be as defined in Table 1. Table 1: Limiting chemical composition
Mechanical properties
Mechanical property requirements at 23°C ± 5°C shall be as defined in Table 2. Table 2: Limiting mechanical properties
Process requirements
Specific process requirements
Performance Heat treatment Table 3: Heat treatment cycle
Standards
FAQ
The maximum recommended service temperature is 650°C
(1202°F) for continuous operation.
Yes, it can be welded using standard welding processes with
proper pre-heating and post-weld heat treatment.