SAE AMS 5629J-2021

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recording, or otherwise, without the prior written permission of SAE.

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Tel: +1 724-776-4970 (outside USA)

Fax: 724-776-0790

Email: CustomerService@sae.org

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For more information on this standard, visit

https://www.sae.org/standards/content/AMS5629J

AEROSPACE

MATERIAL SPECIFICATION

AMS5629™

REV. J

Issued 1968-11

Reaffirmed 2006-10

Revised 2021-04

Superseding AMS5629H

Steel, Corrosion-Resistant, Bars, Wire, Forgings, Rings, and Extrusions

13Cr - 8.0Ni - 2.2Mo - 1.1Al

Vacuum Induction Plus Consumable Electrode Melted

Solution Heat Treated, Precipitation Hardenable

(Composition similar to UNS S13800)

RATIONALE

AMS5629J prohibits unauthorized exceptions (3.9, 4.4.4, 5.2.1.1), revises composition (3.1) to replace obsolete chemical

analysis standards, updates bar condition (3.3.1), updates heat treatment (3.4) adds strain rate control (3.5.2.2.1.1), adds

machining allowance (3.6.2, 8.7), and results from a Five-Year Review and update of this specification.

1. SCOPE

1.1 Form

This specification covers a premium aircraft-quality corrosion-resistant steel in the form of bars, wire, forgings, flash welded

rings, and extrusions up to 12 inches (305 mm) in nominal diameter, or least distance between parallel sides in the solution

heat treated condition (see 8.4), and stock of any size for forging, flash welded rings, or extrusion (see 8.8).

1.1.1 For purchase of solution treated and aged product, use the applicable AMS slash specification (see 8.4). If a slash

sheet description is not specified, solution annealed material shall be supplied. A specific example of a slash

specification is:

AMS5629/H1000 – Precipitation Hardened to H1000 condition

1.2 Application

These products have been used typically for parts requiring corrosion resistance, stress-corrosion resistance, high strength

up to 600 °F (316 °C), and good ductility and strength in the transverse direction in large section sizes, but usage is not

limited to such applications.

1.2.1 Certain design and processing procedures may cause these products to become susceptible to stress-corrosion

cracking; ARP1110 recommends practices to minimize such conditions.

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SAE INTERNATIONAL AMS5629™J Page 2 of 10

1.3 Classification

Product covered by this specification is classified as follows:

1.3.1 Melting Practice

Type 1 - Steel multiple melted using vacuum consumable electrode remelting.

Type 2 - Steel multiple melted using electroslag remelting.

1.3.1.1 When a type is not specified, Type 1 shall be supplied.

1.3.2 Maximum Delta Ferrite Content

Class A – 0.5% max., free ferrite.

Class B – 1.0% max., free ferrite.

Class C – 2.0% max., free ferrite.

1.3.2.1 When no class is specified, any class may be supplied.

2. APPLICABLE DOCUMENTS

The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the

extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is

specified. When the referenced document has been cancelled and no superseding document has been specified, the last

published issue of that document shall apply.

2.1 SAE Publications

Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA

and Canada) or +1 724-776-4970 (outside USA), www.sae.org.

AMS2241 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and Wire

AMS2248 Chemical Check Analysis Limits Corrosion and Heat-Resistant Steels and Alloys, Maraging and Other

Highly-Alloyed Steels, and Iron Alloys

AMS2300 Steel Cleanliness, Premium Aircraft-Quality Magnetic Particle Inspection Procedure

AMS2315 Determination of Delta Ferrite Content

AMS2371 Quality Assurance Sampling and Testing Corrosion and Heat-Resistant Steels and Alloys Wrought

Products and Forging Stock

AMS2374 Quality Assurance Sampling and Testing Corrosion and Heat-Resistant Steel and Alloy Forgings

AMS2750 Pyrometry

AMS2761 Heat Treatment of Steel Raw Materials

AMS2806 Identification Bars, Wire, Mechanical Tubing, and Extrusions Carbon and Alloy Steels and Corrosion and

Heat-Resistant Steels and Alloys

AMS2808 Identification Forgings

AMS7490 Rings, Flash Welded Corrosion and Heat-Resistant Austenitic Steels, Austenitic-Type Iron, Nickel, or

Cobalt Alloys, or Precipitation-Hardenable Alloys

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SAE INTERNATIONAL AMS5629™J Page 3 of 10

ARP1110 Minimizing Stress Corrosion Cracking in Wrought Forms of Steels and Corrosion Resistant Steels and

Alloys

ARP1917 Clarification of Terms Used in Aerospace Metals Specifications

AS1182 Standard Stock Removal Allowance Aircraft-Quality and Premium Aircraft-Quality Steel Bars and

Mechanical Tubing

AS6279 Industry Standard Practices for Production, Distribution, and Procurement of Metal Stock

2.2 ASTM Publications

Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959,

Tel: 610-832-9585, www.astm.org.

ASTM A370 Mechanical Testing of Steel Products

ASTM A604 Macroetch Testing of Consumable Electrode Remelted Steel Bars and Billets

ASTM A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

ASTM E112 Determining Average Grain Size

ASTM E140 Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell

Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness

3. TECHNICAL REQUIREMENTS

3.1 Composition

Shall conform to the percentages by weight shown in Table 1, determined in accordance with ASTM A751, or by other

analytical methods acceptable to purchaser.

Table 1 - Composition

Element

Min

Max

Carbon

0.05

Manganese

0.10

Silicon

0.10

Phosphorus

0.010

Sulfur

0.008

Chromium

12.25

13.25

Nickel

7.50

8.50

Molybdenum

2.00

2.50

Aluminum

0.90

1.35

Nitrogen

0.010

3.1.1 Check Analysis

Composition variations shall meet the applicable requirements of AMS2248 except that no variation over maximum is

permitted for nitrogen.

3.2 Melting Practice

Product shall be multiple melted using vacuum induction primary melting followed by either vacuum consumable electrode

remelting for Type 1 or, when specified, electroslag remelting for Type 2.

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摘要：

SAE AMS 5629J-2021 是由国际自动机工程师学会（SAE International）发布的最新版本航空航天材料规范，主要针对耐腐蚀及耐高温的 17-4PH 马氏体沉淀硬化不锈钢棒材、线材、锻件及管材。该标准规定了材料在固溶热处理与沉淀硬化状态下的化学成分、力学性能、热处理工艺及质量控制要求，广泛应用于航空发动机、结构部件及高应力耐腐蚀环境。与先前版本相比，J版本可能涉及对标准引用、尺寸公差或检验程序的更新，以确保符合最新的航空航天与国防工业质量体系（如 AS9100）要求。该规范

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