ASTM B564
Nickel-alloy forgings
Covers nickel-alloy forgings, including flanges and forged fittings in alloys 600, 625, 800, 825, C276, C22 and Monel 400.
- Flanges & forgings
- ASME SB-564
- 7 grades supplied to it
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is ASTM B564?
ASTM B564 is the specification for nickel-alloy forgings — flanges, forged fittings, valve bodies and similar parts in alloys such as 825 (N08825), 625 (N06625), 600 (N06600), Monel 400 (N04400) and Hastelloy C276 (N10276). It sets the material; flange dimensions come from ASME B16.5 or ASME B16.47. ASME adopts it as SB-564.
ASTM B564 at a glance
| Products | Flanges, forged fittings, valve parts, rings |
|---|---|
| Material family | Nickel alloys |
| Dimensions | Not covered — ASME B16.5, B16.47, B16.11 or drawing |
| ASME designation | SB-564 |
Alloys commonly forged to ASTM B564
| Alloy | UNS | Our flange page |
|---|---|---|
| Alloy 825 | N08825 | Inconel 825 flanges |
| Alloy 625 | N06625 | Inconel 625 flanges |
| Alloy 600 | N06600 | Inconel 600 flanges |
| Monel 400 | N04400 | Monel 400 flanges |
| Hastelloy C276 | N10276 | C276 flanges (also ASTM B462) |
How to write ASTM B564 on a purchase order
Name the product, size, material specification and grade, the dimensional standard and the certificate. An example line:
Illustrative only — sizes, tests, inspection level and any project values come from your purchase specification.
ASTM B564 edition and verification status
Which edition we have confirmed, and what is still being checked before any numerical requirement is published here.
| Current edition (publisher listing) | B564-25 — checked 7 October 2026 |
|---|---|
| Full-text verification | In progress — numerical requirements are published here only after the current text has been reviewed |
| Edition on your order | The edition named in your purchase order or design code governs — confirm it with your enquiry |
What to know before ordering to ASTM B564
The points that decide whether material to ASTM B564 is accepted at inspection.
- Order by UNS number: B564 UNS N08825 for Alloy 825 flanges.
- Forgings are supplied annealed.
- Flange dimensions still come from ASME B16.5 or B16.47.
Grades and products we supply to ASTM B564
| Grade | Product | Designation on the certificate |
|---|---|---|
| Inconel 825 | Fittings · Flanges | ASTM B564 |
| Inconel 600 | Fittings · Flanges | ASTM B564 |
| Inconel 625 | Fittings · Flanges | ASTM B564 |
| Incoloy 800 / 800H / 800HT | Fittings · Flanges | ASTM B564 |
| Hastelloy C276 | Fittings · Flanges | ASTM B462 / B564 |
| Hastelloy C22 | Fittings · Flanges | ASTM B462 / B564 |
| Monel 400 | Fittings · Flanges | ASTM B564 |
How ASTM B564 fits into an order
A purchase order line is only complete when it names the material standard, the dimensional standard and the inspection document. Miss one and the mill, the inspector and the buyer can each read the order differently.
Standards used with ASTM B564
Same family
ASTM B564 — questions buyers ask
What is ASTM B564?
ASTM B564 is the specification for nickel-alloy forgings — flanges, forged fittings, valve bodies and similar parts in alloys such as 825 (N08825), 625 (N06625), 600 (N06600), Monel 400 (N04400) and Hastelloy C276 (N10276). It sets the material; flange dimensions come from ASME B16.5 or ASME B16.47. ASME adopts it as SB-564.
Which standard covers Inconel 825 flanges?
ASTM B564 (UNS N08825), with dimensions to ASME B16.5 or B16.47.
What is the pressure rating of a B564 825 flange?
It depends on class and temperature. Alloy 825 is in ASME B16.5 material group 3.8; read the rating table for your class and design temperature — the class number is not a pressure.
Which grades do you supply to ASTM B564?
Inconel 825, Inconel 600, Inconel 625, Incoloy 800 / 800H / 800HT, Hastelloy C276, Hastelloy C22, Monel 400 — see the table on this page for the exact product and designation.
What is the difference between ASTM B564 and ASME SB-564?
ASME SB-564 is the ASME Boiler and Pressure Vessel Code (Section II) adoption of ASTM B564. The technical requirements are usually identical to a specific ASTM edition; pressure-equipment codes call for the ASME designation, and most mill certificates show both.
What is the current edition of ASTM B564?
The publisher's listing checked on 7 October 2026 shows B564-25 as the current edition. The edition that governs an order is the one named in the purchase order or design code. Full-text review of the current edition is in progress, so numerical requirements are not published on this page yet.
Do you supply certificates to this standard?
Yes. Material is supplied with mill test certificates to EN 10204 3.1 showing the standard, grade and heat number; 3.2 with third-party inspection on request.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026