ASTM A209 ,Standard Specification for Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes.
OD: 10mm~203mm
WT: 2.0mm~25mm
Length:5.8-12m or as customers required
Grade:ASTM A209 T1,ASTM A209 T1a,ASTM A209 T1b
Technique:Seamless
Usage:
1. Low and medium pressure fluid transportation pipeline
2. Power plant
3. Boiler tube
4. Petrochemical industry
Package: Oil dipped or black painted surface, packed in seaworthy bags, hexagonal bundled.
Chemical Composition:
|
C |
Mn |
P |
S |
Si |
Mo |
|
|
T1 |
0.10-0.20 |
0.30-0.80 |
=0.025 |
=0.025 |
0.10-0.50 |
0.44-0.65 |
|
T1a |
0.15-0.25 |
0.30-0.80 |
=0.025 |
=0.025 |
0.10-0.50 |
0.44-0.65 |
|
T1b |
=0.14 |
0.30-0.80 |
=0.025 |
=0.025 |
0.10-0.50 |
0.44-0.65 |
Mechanical Properties:
|
Grade |
T1 |
T1a |
T1b |
|
Tensile Strength min Ksi(Mpa) |
55(380) |
60(415) |
43(365) |
|
Yield Strength Min Ksi(Mpa) |
30(205 |
32(220) |
28(195) |
|
Elongation in 2in or 50mm min% |
30 |
30 |
30 |
Heat treatment:
Should hot-processed and cold-processed pipes be heat treated at a temperature of 650°C? At least. The manufacturer can choose complete annealing, isothermal annealing or normalizing plus tempering. The minimum tempering temperature should not be lower than 650℃.
