ASTM A335 P12 Seamless Ferritic Alloy-Steel Pipe
Description
ASTM A335 P12 Seamless Ferritic Alloy-Steel Pipe
Standard:ASTM A 335/A 335M
Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
ASTM A335 P12 Seamless Ferritic Alloy-Steel Pipes cover nominal (average) wall seamless alloy-steel pipe intended for high-temperature service.
Pipe ordered to ASTM A335 specification shall be suitable for bending,flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.
ASTM A335 P12 Seamless Ferritic Alloy-Steel Pipe Quick Details
Manufacture:Seamless process ,Hot-finished or Cold-finished
Wall thickness(WT): 2.1mm——20 mm.
Outer diameter (OD): 21 mm——509mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded
Heat Treatment:
Pipe of Grades P12, either hot finished or cold drawn, may be given a final heat treatment at 1200°F [650°C] to 1300°F [705°C] .
Chemical Composition of ASTM A335 P12
| Grade | Chemical Composition(%) | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P12 | ≤0.015 | 0.30-0.60 | ≤0.025 | ≤0.025 | ≤0.50 | 0.80-1.25 | 0.45-0.65 |
Mechanical Properties of ASTM A335 P12
| Grade | Mechanical property | ||
| Tensile Strength(MPa) | Yield Strength(MPa) | Elongation(%) | |
| P12 | ≥415 | ≥205 | ≥30 |
Outside diameter tolerances of ASTM A335 Seamless Ferritic Alloy-Steel Pipe
| NPS Designator | Over | Under | ||
| in. | mm | in. | mm | |
| 1⁄8 to 1 1⁄2 , incl. | 1 ⁄ 64 (0.015) | 0.40 | 1 ⁄ 64 (0.015) | 0.40 |
| Over 1 1⁄2 to 4, incl. | 1 ⁄ 32 (0.031) | 0.79 | 1 ⁄ 32 (0.031) | 0.79 |
| Over 4 to 8, incl. | 1 ⁄ 16 (0.062) | 1.59 | 1 ⁄ 32 (0.031) | 0.79 |
| Over 8 to 12, incl. | 3 ⁄ 32 (0.093) | 2.38 | 1 ⁄ 32 (0.031) | 0.79 |
| Over 12 | ± 1 % | |||