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
|
20
|
|
