ASTM A294-84 PDF

Full title and description

ASTM A294-84 — Standard Specification for Alloy Steel Forgings for Turbine Wheels and Disks. This 1984 ASTM specification defined general requirements for alloy steel forgings intended primarily for use as turbine rotor disks and wheels in power-generation and aerospace applications.

Abstract

ASTM A294-84 specified the materials, heat treatment, and quality requirements appropriate for alloy steel forgings manufactured for turbine wheels and disks. The document focused on ensuring forgings were sound, heat-treated, and tested to provide the mechanical and metallurgical properties needed for high‑stress rotating components.

General information

• Status: Withdrawn / inactive (historical specification; listed as replaced/withdrawn in bibliographic records).
• Publication date: 1984 (designation shown as A294-84).
• Publisher: ASTM International.
• ICS / categories: 77.140.85 — Iron and steel forgings (Metallurgy / Iron and steel products / Forgings).
• Edition / version: A294-84 (1984 edition).
• Number of pages: ~5 pages (standard bibliographic listings show a short, 4–6 page specification).

Scope

This specification covered alloy steel forgings intended for use as turbine rotor disks and wheels, establishing basic requirements for material condition, heat treatment, and acceptance testing appropriate for high‑stress rotating components. It was written as a product specification for forgings rather than a dimensional or manufacturing standard.

Key topics and requirements

• Material designation and permitted alloy types for turbine wheel/disk forgings.
• Heat‑treatment requirements to achieve required mechanical properties and microstructure.
• Requirements for certification and heat/lot traceability.
• Production and acceptance testing (typical tests: tensile, hardness, and nondestructive examinations such as ultrasonic or liquid‑penetrant where applicable).
• Workmanship, finish, marking, and purchaser‑specified dimensional/tolerance requirements.

Typical use and users

Used historically by forging manufacturers, turbine OEMs, procurement and quality engineers in power generation and aerospace industries, metallurgists, and testing laboratories for specifying and qualifying alloy-steel rotor disks and wheels. Today it is of archival interest for historical procurement records or legacy equipment; current projects should reference active ASTM or industry specifications.

Related standards

Modern and related ASTM documents that cover turbine rotor/disk forgings and general forging requirements include, for example, ASTM A470 (vacuum‑treated carbon and alloy steel forgings for turbine rotors and shafts), ASTM A788/A788M (general requirements for steel forgings), and newer turbine‑disk specific documents such as ASTM A891/A891M. Users should consult current ASTM catalog entries for active specifications that apply to turbine disks and wheels.

Keywords

ASTM A294-84, alloy steel forgings, turbine wheels, turbine disks, rotor disks, forgings, heat treatment, nondestructive examination, material specification, withdrawn.

FAQ

Q: What is this standard?

A: ASTM A294-84 was an ASTM specification titled "Standard Specification for Alloy Steel Forgings for Turbine Wheels and Disks" that defined material and quality requirements for alloy-steel forgings used as turbine rotor disks and wheels.

Q: What does it cover?

A: It covered alloy steel forgings for turbine wheels and disks, addressing material selection, heat treatment, workmanship, and acceptance testing appropriate for high‑stress rotating turbine components.

Q: Who typically uses it?

A: Forging producers, turbine OEMs, procurement and quality engineers, metallurgists, and testing/inspection laboratories involved in manufacture, procurement, or qualification of turbine rotor components.

Q: Is it current or superseded?

A: The A294-84 bibliographic record is listed as withdrawn/inactive in standards catalogs. For current requirements, consult active ASTM specifications (for example ASTM A470, ASTM A788/A788M, ASTM A891/A891M and others) and contact ASTM International for definitive status and any direct replacements.

Q: Is it part of a series?

A: It sat within ASTM's material/forgings family of standards (ASTM A2xx series for steel forgings and related product specifications). Related general forging requirements are covered by documents such as A788/A788M and several product‑specific forging specifications for rotors and rings.

Q: What are the key keywords?

A: Alloy steel forgings, turbine wheel, turbine disk, rotor disk, heat treatment, forging specification, NDE, tensile, hardness, ASTM A294-84.