SAE AMS 2680D-2025 用于疲劳关键应用的电子束焊接

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TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada)

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

Fax: 724-776-0790

Email: CustomerService@sae.org

SAE WEB ADDRESS: http://www.sae.org

For more information on this standard, visit

https://www.sae.org/standards/content/AMS2680D/

AEROSPACE

MATERIAL SPECIFICATION

AMS2680™

REV. D

Issued 1981-04

Reaffirmed 2019-01

Revised 2025-04

Superseding AMS2680C

Electron-Beam Welding

For Fatigue Critical Applications

RATIONALE

AMS2680D results from a Five-Year Review and update of this specification with changes to Ordering Information, Authority

(see 1.2.2), Surface Preparation (see 3.3.4.2), Weld Schedule Certification (see 3.4.2.4), Finishing (see 3.5.1), Fatigue

Testing (see 3.6.2), Maximum Defect Area (see 3.7.2.3.2), and Maximum Aligned Defect Area (see 3.7.2.3.3).

NOTICE

ORDERING INFORMATION: The following information shall be provided to the welding processor by the purchaser.

The purchase order shall specify not less than the following:

• AMS2680D

• Part number or assembly number of parts to be welded

• Quantity of parts to be welded

• Fatigue specimen shape and weld configuration, if required (see 3.6.2)

Parts manufacturing operations such as heat treating, forming, and media finishing can affect the condition of the substrate

for welding or, if performed after welding, could adversely affect the welded part. The sequencing of these types of

operations should be specified by the cognizant engineering organization or the purchaser and is not controlled by

this specification.

1. SCOPE

1.1 Purpose

This specification defines the procedures and requirements for joining metals and alloys using the electron-beam

welding process.

1.2 Application

These procedures are used typically for high-quality electron-beam welding of aerospace components, the failure of which

could cause loss of the aerospace vehicle or one of its major components, loss of control, or significant injury to occupants

of a manned aerospace vehicle, but usage is not limited to such applications.

SAE INTERNATIONAL AMS2680™D Page 2 of 17

1.2.1 The procedure covered by this specification is recommended for square groove and square scarf-butt joints for

fatigue-critical applications.

1.2.2 Authority

The cognizant engineering organization may impose requirements or approve allowances that supersede the requirements

in this AMS.

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.

AMS2630 Inspection, Ultrasonic, Product Over 0.5 Inch (12.7 mm) Thick

AMS2631 Ultrasonic Inspection, Titanium and Titanium Alloy Bar, Billet, and Plate

AMS2632 Inspection, Ultrasonic, of Thin Materials, 0.5 Inch (12.7 mm) and Under in Cross-Sectional Thickness

ARP1333 Nondestructive Testing of Electron Beam Welded Joints in Titanium-Base Alloys

AS7766 Terms Used in Aerospace Metals Specifications

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 E8/E8M Tension Testing of Metallic Materials

ASTM E466 Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials

ASTM E606 Strain-Controlled Fatigue Testing

ASTM E1417 Liquid Penetrant Testing

ASTM E1444 Magnetic Particle Testing for Aerospace

ASTM E1742 Radiographic Examination

2.3 ANSI Accredited Publications

Copies of these documents are available online at https://webstore.ansi.org/.

ANSI B46.1 Surface Texture (Surface Roughness, Waviness, Lay)

SAE INTERNATIONAL AMS2680™D Page 3 of 17

2.4 AIA Publications

Available from Aerospace Industries Association, 1000 Wilson Boulevard, Suite 1700, Arlington, VA 22209-3928,

Tel: 703-358-1000, www.aia-aerospace.org.

NAS 976 Electron Beam Welding Machine - High Vacuum

2.5 AWS Publications

Available from American Welding Society, 8669 NW 36 Street, #130, Miami, FL 33166-6672, Tel: 1-800-443-9353 or

305-443-9353, www.aws.org.

AWS A3.0 Standard Welding Terms and Definitions; Including Terms for Adhesive Bonding, Brazing, Soldering,

Thermal Cutting, and Thermal Spraying

AWS D17.1 Fusion Welding for Aerospace Applications

2.6 Definitions

Terms used in AMS are defined in AS7766.

Welding defect definitions shall conform to standard definitions stated in AWS A3.0.

3. TECHNICAL REQUIREMENTS

3.1 Materials

3.1.1 Parent Materials

Parent materials shall be as specified.

3.1.2 Filler Materials

When required, filler metal shall be as specified.

3.1.3 Cleaning Materials

Cleaning materials, chemical solvents, or etching solutions shall be as specified or stated in the certified welding schedule.

3.2 Equipment

3.2.1 Electron-Beam Welding Equipment

Electron-beam welding equipment shall be capable of producing welds meeting the requirements of 3.6 and 3.7. Equipment

conforming to NAS 976 is accepted as meeting this requirement.

3.2.2 Jigs and Fixtures

All holding fixtures shall be capable of maintaining the desired configuration and tolerances during welding, providing backup

as required, and allowing required workspace between the workpiece and the electron gun. Backup material used to deflect

or absorb residual electron-beam energy shall be of the same alloy as the part being welded except that alternate backup

materials may be used when approved by schedule certification in 3.4.2. Tooling within 6 inches (152 mm) of the weld joint

shall be made from nonmagnetic materials or be degaussed to acceptable limits (see 3.2.3).

3.2.3 Degaussing

Ferromagnetic materials and tooling shall, prior to welding, be demagnetized to a level established by schedule certification

(see 3.4.2) that prevents electron-beam deflections while welding the joint.

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标签： #焊接 #MS #应用

摘要：

本文介绍了SAE AMS 2680D-2025标准，即针对疲劳关键应用的电子束焊接最新规范。该标准由国际自动机工程师学会（SAE International）发布，专门用于航空航天及其他高可靠性领域中承受循环载荷、疲劳寿命要求严苛的金属零部件的电子束焊接工艺。AMS 2680D涵盖了从焊接设备要求、焊前准备、焊接参数控制到焊接缺陷评级和后续热处理的全流程质量规范，旨在确保焊缝在极端疲劳应力下仍能保持优异的机械性能与长期可靠性。相较于之前的版本，2025版更新了焊接参数认证要求、增加了对新型高强度

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