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ASTM A335 Grade P11 Seamless Pipe
ASTM A335 P11 seamless steel pipe is a steel grade under ASTM standard, used in fields such as high pressure boiler and petrochemical industry.
ASTM A209 /A209M ASME SA209 Pipe shall be manufactured using a seamless process and shall be hot or cold finished as specified.
ASTM A209 /A209M covers multiple grades of minimum wall thickness, seamless, carbon-molybdenum alloy steel, boiler tubes, and superheater tubes.
ASTM A209 /A209M covers pipe with outside diameters from 1⁄2 to 5 inches (12.7 to 127 mm), inclusive, and minimum wall thicknesses from 0.035 to 0.500 inches (0.9 to 12.7 mm), inclusive.
Standard: ASTM A209/A209M, ASME SA209.
Description Name: ASTM A209 / ASME SA209 T1, T1a, T1b Seamless Pipe, ASTM A209 T1 Superheater Tube, ASME SA209 T1 Superheater Tube. ASTM A209 T1 Boiler Tube, ASTM A209 T1a Tube, ASTM A209 T1b Tube, Seamless Superheater Tube, Boiler Tube.
Dimensions: 12.7 to 127 mm.
Wall thickness: 0.9 to 12.7 mm.
Shape: round.
Length: single random length/double random length or according to customer's actual requirements.
Level: T1, T1a, T1b.
Chemical Composition (%):
| Grade | C | Si | Mn | P | S | Mo | Cr |
| T1 | 0.10-0.20 | 0.10-0.50 | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.44-0.65 | / |
| T1a | 0.15-0.25 | 0.10-0.50 | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.44-0.65 | / |
| T1b | 0.14max | 0.10-0.50 | 0.30-0.80 | ≤0.025 | ≤0.025 | 0.44-0.65 | / |
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Mechanical Properties |
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| Grade | Tensile | Yield | Elongation | Hardness |
| Strength (Mpa) | Strength (Mpa) | (%) | (HRB) | |
| T1 | ≥380 | ≥205 | ≥30 | ≤80 |
| T1a | ≥365 | ≥195 | ≥30 | ≤81 |
| T1b | ≥415 | ≥220 | ≥30 | ≤77 |
