ASTM B564 covers nickel alloy forgings and includes chemical composition, grain size, tensile strength, yield strength, elongation, tension testing, and ultrasonic testing requirements at a standards-summary level. For RTI, it is the material foundation behind nickel alloy flange pages such as Inconel 625 and Hastelloy C276 flanges.
Standards intelligence / quality / 8 min
ASTM B564 Nickel Alloy Forgings Guide for Flange Buyers
ASTM B564 is the key material route RTI uses when buyers specify nickel alloy forgings for flanges and forged components. This guide explains how the standard fits into a flange RFQ, what it controls at a high level, and why chemistry, mechanical properties, heat number traceability, ultrasonic review, PMI, and MTC release should be aligned before order placement.
Engineering explanation
Written as a specification aid, not a generic article.
The guide keeps standards, material selection, inspection, and commercial release in separate lanes so buyers can issue a cleaner technical RFQ.
B564 does not tell the buyer whether the flange is WNRF, BLRTJ, ASME B16.5, ASME B16.47, or drawing-based. A serious RFQ therefore combines B564 with the dimensional standard, pressure class, facing, bore, heat treatment, inspection documents, and any sour-service or project-specific clauses.
Technical diagram
ASTM B564 to finished flange
Step 01
UNS selection
Confirm nickel alloy grade before route selection.
Step 02
Forging route
Apply ASTM B564 / ASME SB564 as the material basis.
Step 03
Machining
Machine to B16.5, B16.47, B16.36, or drawing.
Step 04
Inspection
Verify dimensions, PMI, marking, and certificates.
Step 05
Release
Ship only against approved MTC and packing scope.
Specification table
Structured control points for engineering and procurement.
The table is intentionally compact: it summarizes the decision points RTI needs before a commercial offer becomes technically meaningful.
| Engineering point | Controlled guidance | Procurement implication |
|---|---|---|
| Forging scope | Standard specification for nickel alloy forgings. | Use for forged nickel alloy flange and component enquiries. |
| Grade identity | Includes multiple UNS nickel alloy grades, including N06625 and N10276 in the current source listing. | State UNS number and commercial alloy name together. |
| Testing themes | Composition, grain size, tensile, yield, elongation, tension, and ultrasonic tests are part of the controlled scope. | Ask for MTC fields that prove the ordered product route. |
| Dimensional separation | B564 is not the flange dimensional standard. | Pair it with ASME B16.5, B16.47, B16.36, or drawing requirements. |
| Document control | Lot and heat traceability must follow the supplied forging and finished component. | Request heat number marking and EN 10204 3.1 where needed. |
Application examples
Where this guide changes the buying conversation.
Examples show quotation contexts, not universal approvals. The project specification remains the governing document.
Buyer and procurement implications
The commercial consequences of the engineering detail.
Each point is written for quotation discipline: what to state, what to avoid, and what to hold for engineering or inspection review.
Use the right pair
Quote ASTM B564 with ASME B16.5 or another dimensional standard; one controls material, the other controls geometry.
Read the MTC
The MTC should connect UNS, heat number, chemistry, mechanical results, heat treatment, and test route to the supplied item.
Control substitution
Do not substitute N06625, N10276, N08825, or other nickel grades by family name alone.
Add project clauses early
NACE, IGC, ultrasonic testing, PMI extent, and TPI hold points should be requested before purchase order release.
Engineering FAQs
Practical questions on ASTM B564 Guide.
Answers are intentionally tied to standards, documents, and RFQ data rather than loose sales copy.
Related materials
Continue the material-selection path.
Related links are deliberately narrow so the knowledge centre supports engineering choices instead of spraying pages.
Related products
Move from knowledge to line-item definition.
Product links connect the technical guide to controlled commercial pages and the RFQ intake.
Contextual RFQ
Need nickel alloy forgings quoted with document control?
Send RTI the UNS grade, ASTM B564 route, dimensions, class, facing, PMI, TPI, and certificate requirement.
