ASTM A335 is a ASTM standard specifies Seamless Ferritic Alloy Steel Pipe for High-Temperature Service. ASTM A335 pipe ordered to this specification shall be suitable for bending and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.
Steel Grade:
STM A335 GR P5 | GR P9 | GR P11 | GR P22 | GR P91 | GR P92.
Mechanical Properties:
| Standard | Steel Grade | TS (Mpa) | Ys (Mpa) | E (%) | Hardness |
| ASTM A335 | SA335 P11 | ≥ 415 | ≥ 205 | ≥ 22 | ≤ 163 HB |
| ASTM A335 | SA335 P12 | ≥ 415 | ≥ 220 | ≥ 22 | ≤ 163 HB |
| ASTM A335 | SA335 P22 | ≥ 415 | ≥ 205 | ≥ 22 | ≤ 163 HB |
| ASTM A335 | SA335 P5 | ≥ 415 | ≥ 205 | ≥ 22 | ≤ 187 HB |
| ASTM A335 | SA335 P91 | 585-760 | ≥415 | ≥ 20 | ≤ 250 HB |
| ASTM A335 | SA335 P92 | ≥ 620 | ≥ 440 | ≥ 20 | ≤ 250 HB |
Grade and Chemical composition:
| Grade | C | Mn | P,S Max | Si | Cr | Mo |
| P11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
| P22 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.5 max | 1.9-2.60 | 0.87-1.13 |
| P5 | 0.15 max | 0.30-0.60 | 0.025 | 0.5 max | 4.00-6.00 | 0.45-0.65 |
| P9 | 0.15 max | 0.30-0.60 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 |
| P91 | 0.08-0.12 | 0.30-0.60 | 0.020/0.010 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 |
| V:0.18-0.25 | N:0.03-0.07 | Ni:0.040 max | Al:0.02 max | Nb:0.060-0.10 | Ti:0.01 max | |
| P92 | 0.07-0.13 | 0.30-0.60 | 0.020/0.010 | 0.50 max | 8.50-9.50 | 0.30-0.60 |
| v:0.15-0.25 | N:0.03-0.07 | Ni:0.40 max | Al:0.02 max | Nb:0.04-0.09 | W:1.50-2.00 | |
| B:0.001-0.006 | Ti:0.01 max | Zr:0.01 max |
Size:
Hot-rolled: OD:51-508 mm; WT: 7-60 mm; L: Max 16000 mm
Cold-Drawn: OD: 10-50 mm; WT: 2-10 mm; L: Max 16000 mm
Specifications in accordance with customer requirements.
Packing:
Beveled/black painting/plastic caps/in bundles/steel strips/wooden box/
accordance with customer requirements.
Surface treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting, Epoxy & Fbe Coating
Painting as requested
