Normas e condições técnicas para o fornecimento: British Standard BS 3059:Part 2 Steel boiler and superheater tubes
Aplicação: Specification for carbon, alloy and austenitic stainless steel tubes with specified elevated temperature properties.
Tipo e número do aço:
Steel type | Type number |
Carbon | 360 |
Carbon manganese | 440 |
0.3%Molybdenum | 243 |
1%Chromium,0.5%Molybdenum | 620-460 |
2.25%Chromium, 1%Molybdenum(normalized and tempered) | 622-490 |
9%Chromium,1%Molybdenum(annealed) | 629-470 |
9%Chromium,1%Molybdenum(normalized and tempered) | 629-590 |
12%Chromium,1%Molybdenum,vanadium | 762 |
Composição química (%):
Grade | C | Si | Mn | P | S | Cr | Mo | Ni | Other |
360 | ≤0.17 | 0.10~0.35 | 0.40~0.8 | ≤0.035 | ≤0.035 | – | – | – | – |
440 | 0.12~0.18 | 0.10~0.35 | 0.90~1.2 | ≤0.035 | ≤0.035 | – | – | – | – |
243 | 0.12~0.2 | 0.10~0.35 | 0.40~0.8 | ≤0.035 | ≤0.035 | – | 0.25~0.35 | – | Al≤0.012 |
620-460 | 0.10~0.15 | 0.10~0.35 | 0.40~0.7 | ≤0.030 | ≤0.030 | 0.70~1.10 | 0.45~0.65 | – | Al≤0.02 |
622-490 | 0.08~0.15 | ≤0.50 | 0.40~0.7 | ≤0.030 | ≤0.030 | 2.00~2.50 | 0.90~1.2 | – | Al≤0.02 |
629-470 | ≤0.15 | 0.25~1 | 0.3~0.6 | ≤0.030 | ≤0.030 | 8~10 | 0.9~1.1 | – | Al≤0.02 |
629-590 | |||||||||
762 | 0.17~0.23 | ≤0.50 | ≤1.00 | ≤0.030 | ≤0.030 | 10.00~12.5 | 0.80~1.2 | 0.30~0.8 | V 0.25~0.35 |
Propriedades mecânicas:
Grade | Tensile Strength (MPa) | Yield Strength (Mpa Min) | Elongation (% Min) | Flatten Coefficient |
360 | 360~500 | 235 | 24 | 0.1 |
440 | 440~580 | 245 | 21 | 0.07 |
243 | 480~630 | 275 | 22 | 0.07 |
620~460 | 460~610 | 180 | 22 | 0.07 |
622~490 | 490~640 | 275 | 20 | 0.07 |
629~470 | 470~620 | 185 | 20 | 0.07 |
629~590 | 590~740 | 400 | 18 | 0.07 |
762 | 720~870 | 470 | 15 | 0.08 |