Application: For seamless crabon steel boiler and superheater tubes for high-pressure service.
Available Steel Grade: A192.
Size: OD 1/2~7in.( 12.7~177.8mm), WT 0.085~1.000in.(2.2~25.4mm), Max.Length 13500mm.
Grade and Chemical Composition(%):
|
Chemical Composition
|
C
|
Mn
|
P≤
|
S≤
|
Si≤
|
|
|
0.06-0.18
|
0.27-0.63
|
0.035
|
0.035
|
0.25
|
||
Dimension Tolerances acc.to SA-450/SA-450M):
|
OD Inch(mm)
|
+
|
-
|
|
Under 1(25.4)
|
0.10mm
|
0.10mm
|
|
1-1.1/2(25.4-38.1) incl
|
0.15mm
|
0.15mm
|
|
1.1/2-2(38.1-50.8) excl
|
0.20mm
|
0.20mm
|
|
2-2.1/2(50.8-63.5) excl
|
0.25mm
|
0.25mm
|
|
2.1/2-3(63.5-76.2) excl
|
0.30mm
|
0.30mm
|
|
3-4(76.2-101.6) incl
|
0.38mm
|
0.38mm
|
|
4-7.1/2(101.6-190.5) incl
|
0.38mm
|
0.64mm
|
|
7.1/2-9(190.5-228.6) incl
|
0.38mm
|
1.14mm
|
|
|
||
|
WT Inch(mm)
|
+
|
-
|
|
≤1.1/2(38.1)
|
20%
|
0
|
|
>1.1/2(38.1)
|
22%
|
0
|
Hardness
|
Brinell Hardness Number
WT≥0.200Inch(5.1mm)
|
Rockwell Hardness Number
WT≤0.200Inch(5.1mm)
|
|
137HRB
|
77HRB
|