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STEELBOILER AND SUPERHEATER TUBES
主要生产牌号
Mainsteel tube grade
360440 243 620-460 622-490
化学成分
ChemicalComposition
|
Grade grade |
Chemical composition limits, % |
|||||||
|
C |
Si |
Mn |
P max |
S max |
Ni |
Cr |
Mo |
|
|
360 |
≤0.17 |
0.10-0.35 |
0.40-0.80 |
0.035 |
0.035 |
/ |
/ |
/ |
|
440 |
0.12-0.18 |
0.10-0.35 |
0.90-1.20 |
0.035 |
0.035 |
/ |
/ |
/ |
|
243 |
0.10-0.20 |
0.10-0.35 |
0.40-0.80 |
0.035 |
0.035 |
≤0.20 |
≤0.30 |
0.25-0.30 |
|
620-460 |
0.10-0.15 |
0.10-0.35 |
0.40-0.70 |
0.030 |
0.030 |
≤0.20 |
0.70-1.10 |
0.45-0.65 |
|
622-490 |
0.08-0.15 |
≤0.50 |
0.30-0.70 |
0.025 |
0.020 |
≤0.20 |
2.00-2.50 |
0.90-1.20 |
机械性能
Mechanicalproperties
|
Grade grade |
Mechanical properties |
|
|||
|
Steel type |
Steel number |
Yield strength MPa Min. |
Tensile strength MPa |
Elongation % Min. |
|
|
Carbon |
360 |
235 |
360-510 |
24 |
|
|
Carbon manganese |
440 |
245 |
440-580 |
21 |
|
|
0.3%Mo |
243 |
275 |
480-630 |
22 |
|
|
1%Cr0.5%Mo |
620-460 |
180 |
460-610 |
22 |
|
|
2.25%Cr1%Mo |
622-490 |
275 |
490-640 |
20 |
|