On this page 6 sections
What ASTM B446 covers
Standard at a glance
- Standard
- ASTM B446 / ASME SB446
- Issued by
- ASTM
- Product form
- Bars
- Grades on site
- 1
Covers alloy 625 rod and bar in Grade 1 (annealed) and Grade 2 (solution annealed), used for fasteners, valve stems, pump shafts and machined components in seawater and chemical service.
Key requirements
- Grade 1 or Grade 2 heat treatment as ordered
- Tension test per lot
- Dimensional tolerances for hot-worked and cold-finished bar
- Ultrasonic testing on order for critical bar
Summary for procurement guidance. Refer to the current edition of the standard for full requirements.
Grades supplied to ASTM B446
Ordering to ASTM B446
- State "ASTM B446" 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 B446 cover?
Covers alloy 625 rod and bar in Grade 1 (annealed) and Grade 2 (solution annealed), used for fasteners, valve stems, pump shafts and machined components in seawater and chemical service.
Which grades are covered by ASTM B446?
On this site: Inconel 625.
Do you supply material certified to ASTM B446?
Yes. Material is supplied to ASTM B446 with EN 10204 3.1 certificates (3.2 on request), where the mill certifies to it.
Is ASME SAB446 the same as ASTM B446?
ASME adopts many ASTM material specifications into Section II with an "S" prefix (for example SA-446). The adopted text is identical or includes stated modifications, and dual-certified material meets both.