Standard:
ASTMA213 --- American Society for Testing and Materials Standards
ASMESA213 --- American Society of Mechanical Engineers standards
Purpose:
Boilerand Superheater for minimum wall thickness seamless ferritic and austeniticsteel and austenitic steel heat exchanger.
The main production steel grades:
T11,T12, T22, etc. are negotiated, but also supply other grades of steel.
Mechanical properties:
Standard | Grade | Tensile strength (MPa) | Yield strength (MPa) | Elongation (%) |
ASTMA213 | T11 | ≥415 | ≥170 | ≥30 |
T12 | ≥415 | ≥205 | ≥30 | |
T22 | ≥415 | ≥205 | ≥30 |
Chemical composition:
Standard | Grade | C | Si | Mn | P、S | Cr | Mo | V | Cu | Ni |
ASTM A213 | T11 | 0.05~0.15 | 0.50~1.00 | 0.30~0.60 | ≤0.025 | 1.00~1.50 | 0.44~0.65 | / | / | / |
T12 | 0.05~0.15 | ≤0.50 | 0.30~0.61 | ≤0.025 | 0.80~1.25 | 0.44~0.65 | / | / | / | |
T22 | 0.05~0.15 | ≤0.50 | 0.30~0.60 | ≤0.025 | 1.90~2.60 | 0.87~1.13 | / | / | / |