TECHNICAL LIBRARY · ASTM TEMPERATURE-SERVICE NICKEL ALLOYS
ASTM B637-26 — Nickel Alloy Bars and Forgings for Temperature Service
Procurement reference for precipitation-hardenable and cold-worked nickel-alloy rod, bar, forgings and forging stock for moderate or high-temperature service.
Edition control: ASTM B637-26 is the active edition identified in the official ASTM catalogue checked on 31 August 2026. Confirm the authorised publication and purchase-order requirements before use.
Scope in Procurement
ASTM B637 covers specified precipitation-hardenable and cold-worked nickel-alloy rod, bar, forgings and forging stock for moderate or high-temperature service. Alloy, form, condition and heat treatment are inseparable ordering controls.
RFQ and Product Controls
- Exact UNS alloy and ASTM B637-26 edition
- Rod, bar, forging or forging-stock form and dimensions
- Ordered condition and complete heat-treatment route
- Design temperature, load case and governing component or equipment specification
- Chemical, tensile, hardness and stress-rupture requirements applicable to the order
- Inspection-document type, supplementary tests and purchaser witness points
- Heat and lot traceability through manufacture, marking, packaging and release
The material identity must remain traceable from the producing heat and lot through the delivered form, any machining or further processing, inspection documentation and final release.
Scope Boundary
ASTM B637 is a material/product-form route, not a finished-bolting or finished-component specification. A B637 certificate for N07718 feedstock does not establish ASTM A1014/A1014M compliance of a finished bolting component.
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Official Publication and Access Policy
Check the official record for ASTM B637-26. Protected grade tables, property values, tolerances, dimensions and test clauses are not reproduced on this website.
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