SAE AMS5578H-2023 PDF

Full title and description

SAE AMS5578H:2023 — Steel, Corrosion- and Heat-Resistant, Welded Tubing, 12Cr - 8.5Ni - 0.30Cb - 1.1Ti - 2.0Cu; Vacuum Induction plus Consumable Electrode Vacuum Melted; Solution Heat Treated, Precipitation Hardenable. This material specification covers premium-quality corrosion- and heat-resistant welded and drawn tubing intended for aerospace and related high-performance applications.

Abstract

This AMS material specification defines chemical composition, manufacturing processes (vacuum induction plus vacuum consumable electrode melting), heat-treatment sequence (solution heat treated and precipitation-hardenable), dimensional and mechanical requirements, and inspection/verification criteria for welded and drawn tubing made from the 12Cr–8.5Ni–Cb–Ti–Cu alloy designated in the document.

General information

• Status: Current / Active.
• Publication date: August 21, 2023.
• Publisher: SAE International (SAE).
• ICS / categories: 49.025.10 — Steels; Material specification / aerospace materials.
• Edition / version: AMS5578H (2023 revision; supersedes AMS5578G).
• Number of pages: 8 pages (typical PDF/printed length published by SAE).

Scope

This specification covers premium-quality corrosion- and heat-resistant steel tubing supplied as welded or drawn tubing of the alloy and processing route described in the title. It sets requirements for chemical composition, melting practice (vacuum induction and vacuum consumable electrode melting), solution heat treatment and aging (precipitation hardening), mechanical properties, dimensional tolerances, testing (mechanical and metallurgical) and certification necessary for aerospace and other demanding service conditions.

Key topics and requirements

• Chemical composition limits for the specified 12Cr–8.5Ni–Cb–Ti–Cu alloy family (control of Cr, Ni, Cb, Ti, Cu and minor elements).
• Permitted melting and processing methods: vacuum induction melting plus vacuum consumable electrode melting (to assure low interstitials and clean metal).
• Product forms: welded and drawn tubing with specified dimensional tolerances and surface quality.
• Heat-treatment: solution heat treatment followed by controlled aging (precipitation hardening) to achieve required mechanical properties.
• Mechanical property and inspection requirements (tensile, hardness, microstructure/macroetch, nondestructive inspection as called out in the specification).
• Traceability, material certification and marking requirements for acceptance in aerospace applications.

Typical use and users

Used by aerospace manufacturers, suppliers of high-performance tubing, engineering departments specifying materials for corrosion- and heat-resistant components, and procurement/quality teams requiring AMS-grade traceable material for flight hardware, actuators, hydraulic lines, and other systems where elevated temperature and corrosive-service resistance are required.

Related standards

This revision (AMS5578H) updates and supersedes AMS5578G (and earlier letter revisions such as AMS5578F/E/D/C/B). It is part of the AMS family of material specifications maintained by SAE’s corrosion and heat resistant alloys committee; related AMS material specifications cover other steel and alloy tubing grades and finishing/inspection practices used in aerospace applications.

Keywords

AMS5578H, SAE AMS5578, steel tubing, welded tubing, corrosion-resistant steel, heat-resistant steel, vacuum induction melt, vacuum consumable electrode melt, solution heat treated, precipitation hardenable, aerospace materials.

FAQ

Q: What is this standard?

A: SAE AMS5578H:2023 is an SAE material specification that defines the requirements for a premium corrosion- and heat-resistant steel supplied as welded or drawn tubing for aerospace and related applications.

Q: What does it cover?

A: It covers alloy chemistry, permitted melting methods (vacuum induction plus vacuum consumable electrode melting), heat treatment (solution and aging/precipitation hardening), dimensional and mechanical requirements, inspection/testing, and certification/traceability for the specified tubing forms.

Q: Who typically uses it?

A: Aerospace OEMs and suppliers, material procurement and inspection teams, design engineers, and anyone specifying or purchasing AMS-grade corrosion- and heat-resistant steel tubing for critical service.

Q: Is it current or superseded?

A: AMS5578H:2023 is the current (active) revision as of the 2023 publication date and supersedes AMS5578G and prior revisions.

Q: Is it part of a series?

A: Yes — it is part of the SAE AMS material specification family covering corrosion- and heat-resistant alloys and tubing; the document follows the AMS revision lettering sequence (…E, F, G, H) and is maintained by the SAE committee responsible for corrosion and heat resistant alloys.

Q: What are the key keywords?

A: Corrosion-resistant steel, heat-resistant steel, welded tubing, drawn tubing, vacuum induction melt, vacuum consumable electrode melt, solution heat treated, precipitation hardenable, AMS5578H.