SAE AMS 4616G-2018

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AEROSPACE

MATERIAL SPECIFICATION

AMS4616™

REV. G

Issued 1956-07

Reaffirmed 2012-02

Revised 2018-04

Superseding AMS4616F

Silicon Bronze Bars, Rods, Forgings, and Tubing

92Cu - 3.2Si - 2.8Zn - 1.5Fe

Stress Relieved

(Composition similar to UNS C65620)

RATIONALE

AMS4616G revises Composition (3.1) to delete withdrawn chemical analysis standards, and Table 1 to align the composition

limits to the registered values, Reports (4.4), and Identification (5.1.4), and is a Five-Year Review and update of this

specification.

1. SCOPE

1.1 Form

This specification covers one type of bronze in the form of bars, rods, forgings, tubing, and forging stock.

1.2 Application

These products have been used typically for anti-friction bearing cages, but usage is not limited to such applications.

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.

AMS2221 Tolerances, Copper and Copper Alloy Bars and Rods

AMS2223 Tolerances, Copper and Copper Alloy Seamless Tubing

AMS2808 Identification, Forgings

ARP1917 Clarification of Terms Used in Aerospace Metals Specifications

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SAE INTERNATIONAL AMS4616™G Page 2 of 6

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 B154 Mercurous Nitrate Test for Copper and Copper Alloys

ASTM B249/B249M General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings

ASTM B251 General Requirements for Wrought Seamless Copper and Copper-Alloy Tube

ASTM B601 Classification for Temper Designations for Copper and Copper Alloys-Wrought and Cast

ASTM B858 Ammonia Vapor Test for Determining Susceptibility to Stress Corrosion Cracking in Copper Alloys

ASTM E8/E8M Tension Testing of Metallic Materials

ASTM E10 Brinell Hardness of Metallic Materials

ASTM E18 Rockwell Hardness of Metallic Materials

ASTM E112 Determining Average Grain Size

ASTM E478 Chemical Analysis of Copper Alloys

3. TECHNICAL REQUIREMENTS

3.1 Composition

Shall conform to the percentages by weight shown in Table 1, determined by wet chemical methods in accordance with

ASTM E478, by spectrochemical methods, or by other analytical methods acceptable to purchaser:

Table 1 - Composition

Element (3.1.1)

Min

Max

Copper (incl. silver)

90.0

Silicon

2.4

4.0

Zinc

1.5

4.0

Iron

1.0

2.0

Manganese

1.0

Phosphorus

0.10

Sum of Named Elements (3.1.2)

99.5

3.1.1 These composition limits do not preclude the presence of other elements. Limits may be established, and analysis

required for unnamed elements by agreement between the manufacturer or supplier and purchaser.

3.1.2 When all named elements in Table 1 are analyzed, the sum shall be 99.5% minimum, but such determination is not

required for routine acceptance of each lot.

3.2 Condition

The product shall be supplied in the following condition:

3.2.1 Bars, Rods, and Tubing

Hot rolled, drawn, or extruded, cold finished if necessary, and stress-relieved.

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SAE INTERNATIONAL AMS4616™G Page 3 of 6

3.2.2 Forgings

Stress-relieved.

3.2.3 Forging Stock

As ordered by the forging manufacturer.

3.3 Properties

The product shall conform to the following requirements:

3.3.1 Bars, Rods, Forgings, and Tubing

3.3.1.1 Tensile Properties

Shall be as shown in Table 2, determined in accordance with ASTM E8/E8M:

Table 2 - Minimum tensile properties

Property

Value

Tensile Strength

56.0 ksi (386 MPa)

Yield Strength at 0.2% Offset

20.0 ksi (138 MPa)

Elongation in 4D

30%

3.3.1.2 Hardness

Shall be not lower than 90 HB/10/1000, or equivalent, determined in accordance with ASTM E10 on the surface, except on

rounds where a flat, as necessary for accuracy, may be made; hardness also shall be not lower than 55 HRB, determined

in accordance with ASTM E18, approximately midway between center and surface of the cross-section.

3.3.1.3 Grain Size

Shall be as follows, determined in accordance with ASTM E112:

3.3.1.3.1 Bars, Rods, and Tubing

Average grain size shall be not larger than 0.20 mm.

3.3.1.3.2 Forgings

Maximum grain size on the outer half of the radii for anti-friction bearing cages shall be 0.50 mm except that not more than

25% of the area may show grains up to 1.00 mm.

3.3.1.4 Embrittlement

Specimens as in 4.3.8.1 and 4.3.8.2 shall withstand, without cracking, immersion in mercurous nitrate solution in accordance

with ASTM B154, Procedure A, or the ammonia vapor test in accordance with ASTM B858.

3.3.2 Forging Stock

As agreed upon by purchaser and producer.

3.4 Quality

The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and

from imperfections detrimental to usage of the product.

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摘要：

SAE AMS 4616G-2018 是美国汽车工程师学会（SAE）发布的一项航天材料规范，专门针对易切削黄铜棒材与型材的技术要求。该标准替代了之前的 AMS 4616F 版本，主要规定了含铅黄铜（UNS C36000）在航空航天及其他高可靠性应用中的化学成分、机械性能、热处理条件、尺寸公差及质量控制要求。作为航空航天领域的关键参考文件，SAE AMS 4616G-2018 确保了材料在复杂工况下具备优异的加工性、耐腐蚀性和疲劳强度，广泛应用于接头、阀体、紧固件等精密零部件的制造。该标准特别强调

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