ASTM A420 — Piping fittings of wrought carbon steel and alloy steel for low-temperature service
ASTM A420 covers wrought carbon and alloy steel butt-weld fittings for low-temperature service, impact-tested at the grade's test temperature. WPL6 (−46 °C) and WPL3 (3.5 % Ni, −101 °C) are the common grades.
ASTM A420 at a glance
| Standard | ASTM A420 |
|---|---|
| Issued by | ASTM / ASME (SA-420) |
| Product form | Butt-weld fittings |
| Typical use | Low-temperature butt-weld fittings |
| Grades on this site | 2 |
Equivalent and related standards
ASTM A420 grades — chemistry and mechanical properties
| Grade | UNS | C% | Cr% | Ni% | Mo% | YieldMPa min | TensileMPa min |
|---|---|---|---|---|---|---|---|
| ASTM A420 WPL6 | K03006 | 0.30 max | 0.30 max | 0.40 max | 0.12 max | 240 | 415 |
| ASTM A420 WPL3 | — | 0.20 max | — | 3.2–3.8 | — | 240 | 450 |
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 A420: common questions
Which grades does ASTM A420 cover?
On this site: ASTM A420 WPL6, ASTM A420 WPL3. Open any grade for its full chemical composition, mechanical properties and PDF data sheet.
Does Teshi Group supply material to ASTM A420?
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.
Other butt-weld fittings standards
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