ASTM A335 — Seamless ferritic alloy-steel pipe for high-temperature service
ASTM A335 covers seamless ferritic alloy-steel pipe for high-temperature service, suitable for bending, flanging and fusion welding. Grades are designated P: P1 and P2 (carbon-moly and ½Cr), P5, P9, P11, P12, P21, P22, P23, P91 and P92.
ASTM A335 at a glance
| Standard | ASTM A335 |
|---|---|
| Issued by | ASTM / ASME (SA-335) |
| Product form | Pipe |
| Typical use | Chrome-moly steam and refinery pipe |
| Grades on this site | 12 |
Equivalent and related standards
ASTM A335 grades — chemistry and mechanical properties
| Grade | UNS | C% | Cr% | Ni% | Mo% | YieldMPa min | TensileMPa min |
|---|---|---|---|---|---|---|---|
| ASTM A335 P11 | K11597 | 0.05–0.15 | 1.00–1.50 | — | 0.44–0.65 | 205 | 415 |
| ASTM A335 P22 | K21590 | 0.05–0.15 | 1.90–2.60 | — | 0.87–1.13 | 205 | 415 |
| ASTM A335 P91 | K90901 | 0.08–0.12 | 8.00–9.50 | 0.40 max | 0.85–1.05 | 415 | 585 |
| ASTM A335 P5 | K41545 | 0.15 max | 4.00–6.00 | — | 0.45–0.65 | 205 | 415 |
| ASTM A335 P9 | K90941 | 0.15 max | 8.00–10.00 | — | 0.90–1.10 | 205 | 415 |
| ASTM A335 P12 | K11562 | 0.05–0.15 | 0.80–1.25 | — | 0.44–0.65 | 220 | 415 |
| ASTM A335 P1 | K11522 | 0.10–0.20 | — | — | 0.44–0.65 | 205 | 380 |
| ASTM A335 P2 | K11547 | 0.10–0.20 | 0.50–0.81 | — | 0.44–0.65 | 205 | 380 |
| ASTM A335 P15 | K11578 | 0.05–0.15 | — | — | 0.44–0.65 | 205 | 415 |
| ASTM A335 P21 | K31545 | 0.05–0.15 | 2.65–3.35 | — | 0.80–1.06 | 205 | 415 |
| ASTM A335 P23 | UNS K41650 | 0.04–0.10 | 1.90–2.60 | 0.40 max | 0.05–0.30 | 400 | 510 |
| ASTM A335 P92 | K92460 | 0.07–0.13 | 8.50–9.50 | 0.40 max | 0.30–0.60 | 440 | 620 |
Reference information compiled from the published standard for convenience. It does not replace the current edition of the governing standard, which takes precedence. Verify critical dimensions and properties before design, purchase or fabrication. Teshi Engineers & Sales Promoters (P) Ltd accepts no liability for errors or omissions.
FAQ
ASTM A335: common questions
Which grades does ASTM A335 cover?
On this site: ASTM A335 P11, ASTM A335 P22, ASTM A335 P91, ASTM A335 P5, ASTM A335 P9, ASTM A335 P12, ASTM A335 P1, ASTM A335 P2, ASTM A335 P15, ASTM A335 P21, ASTM A335 P23, ASTM A335 P92. Open any grade for its full chemical composition, mechanical properties and PDF data sheet.
Does Teshi Group supply material to ASTM A335?
Teshi Group manufactures flanges, fittings, fasteners and valves, and supplies pipes and plates, to ASTM / ASME specifications and to equivalent EN, JIS, GB and IS standards on request, with EN 10204 3.1 certificates. Send your requirement to info@teshigroup.com.
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