On this page 6 sections
What ASTM A420 covers
Standard at a glance
- Standard
- ASTM A420 / ASME SA420
- Issued by
- ASTM
- Product form
- Fittings
- Grades on site
- 1
Covers butt-weld fittings for low-temperature service, impact-tested at the temperature of the grade: WPL6 at −46 °C (−50 °F), WPL3 at −101 °C and WPL9 at −73 °C.
Key requirements
- Starting material and heat treatment by grade
- Charpy impact tests at the grade temperature
- Dimensions per ASME B16.9
- Marking with the WPL grade symbol
Summary for procurement guidance. Refer to the current edition of the standard for full requirements.
Grades supplied to ASTM A420
Ordering to ASTM A420
- State "ASTM A420" and the edition if your project requires it
- Grade / designation and product dimensions
- Supplementary requirements (tests, heat treatment, certification)
- Certificate type: EN 10204 3.1 or 3.2
Frequently asked questions
What does ASTM A420 cover?
Covers butt-weld fittings for low-temperature service, impact-tested at the temperature of the grade: WPL6 at −46 °C (−50 °F), WPL3 at −101 °C and WPL9 at −73 °C.
Which grades are covered by ASTM A420?
On this site: ASTM A420 WPL6 Fittings.
Do you supply material certified to ASTM A420?
Yes. Material is supplied to ASTM A420 with EN 10204 3.1 certificates (3.2 on request), where the mill certifies to it.
Is ASME SAA420 the same as ASTM A420?
ASME adopts many ASTM material specifications into Section II with an "S" prefix (for example SA-420). The adopted text is identical or includes stated modifications, and dual-certified material meets both.