On this page 6 sections
What ASTM A20 covers
Standard at a glance
- Standard
- ASTM A20 / ASME SA20
- Issued by
- ASTM
- Product form
- Plates
- Grades on site
- 3
Sets the common requirements behind pressure-vessel plate specifications such as ASTM A516 and A387: tolerances, heat-treatment definitions, test-coupon location and supplementary requirements such as simulated PWHT and impact testing.
Key requirements
- Thickness, width and flatness tolerances
- Test specimen location and orientation
- Supplementary requirements (S2 PWHT, S5 Charpy, ultrasonic)
- Marking and certification
Summary for procurement guidance. Refer to the current edition of the standard for full requirements.
Grades supplied to ASTM A20
Ordering to ASTM A20
- State "ASTM A20" 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 A20 cover?
Sets the common requirements behind pressure-vessel plate specifications such as ASTM A516 and A387: tolerances, heat-treatment definitions, test-coupon location and supplementary requirements such as simulated PWHT and impact testing.
Which grades are covered by ASTM A20?
On this site: ASTM A516 Grade 60, ASTM A516 Grade 65, ASTM A516 Grade 70.
Do you supply material certified to ASTM A20?
Yes. Material is supplied to ASTM A20 with EN 10204 3.1 certificates (3.2 on request), where the mill certifies to it.
Is ASME SAA20 the same as ASTM A20?
ASME adopts many ASTM material specifications into Section II with an "S" prefix (for example SA-20). The adopted text is identical or includes stated modifications, and dual-certified material meets both.