On this page 6 sections
What ASTM B425 covers
Standard at a glance
- Standard
- ASTM B425 / ASME SB425
- Issued by
- ASTM
- Product form
- Bars
- Grades on site
- 1
Covers alloy 825 rod and bar for shafts, fasteners, valve components and machined parts in acid and sour service.
Key requirements
- Annealed condition
- Tension test per lot
- Dimensional tolerances for round and hexagon bar
- Ultrasonic testing on order
Summary for procurement guidance. Refer to the current edition of the standard for full requirements.
Grades supplied to ASTM B425
Ordering to ASTM B425
- State "ASTM B425" 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 B425 cover?
Covers alloy 825 rod and bar for shafts, fasteners, valve components and machined parts in acid and sour service.
Which grades are covered by ASTM B425?
On this site: Incoloy 825.
Do you supply material certified to ASTM B425?
Yes. Material is supplied to ASTM B425 with EN 10204 3.1 certificates (3.2 on request), where the mill certifies to it.
Is ASME SAB425 the same as ASTM B425?
ASME adopts many ASTM material specifications into Section II with an "S" prefix (for example SA-425). The adopted text is identical or includes stated modifications, and dual-certified material meets both.