标准
BS3059锅炉及过热器用钢管
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
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