SAE AMS 5346D-2019

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AEROSPACE

MATERIAL SPECIFICATION

AMS5346™

REV. D

Issued 1978-10

Reaffirmed 2014-04

Revised 2019-11

Superseding AMS5346C

Steel, Corrosion-Resistant, Investment Castings

15Cr - 4.6Ni - 0.22Cb (Nb) - 2.8Cu

Solution and Precipitation Heat Treated (H925)

180 ksi (1241 MPa) Tensile Strength (15-5)

(Composition similar to UNS J92110)

RATIONALE

AMS5346D prohibits unauthorized exceptions (3.8), revises Composition analysis standards (3.1), Quality (3.7.4.1), Reports

(4.5.5), and results from a Five-Year Review and update of this specification.

1. SCOPE

1.1 Form

This specification covers a corrosion-resistant steel in the form of investment castings.

1.2 Application

These castings have been used typically for parts requiring good corrosion resistance and strength up to 600 °F (316 °C),

but usage is not limited such applications (see 8.4).

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 this 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.

AMS2175 Castings, Classification and Inspection of

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

Highly Alloyed Steels, and Iron Alloys

AMS2360 Room Temperature Tensile Properties of Castings

AMS2694 In-Process Welding of Castings

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SAE INTERNATIONAL AMS5346™D Page 2 of 11

AMS2700 Passivation of Corrosion-Resistant Steels

AMS2804 Identification, Castings

AMS-H-6875 Heat Treatment of Steel Raw Materials

ARP1917 Clarification of 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 A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

ASTM E8/E8M Tension Testing of Metallic Materials

ASTM E18 Rockwell Hardness of Metallic Materials

ASTM E1417/E1417M Liquid Penetrant Testing

ASTM E1444/E1444M Magnetic Particle Testing

ASTM E1742/E1742M Radiographic Examination

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 (see 8.2.1 and 8.2.2).

Table 1 - Composition

Element

Min

Max

Carbon

Manganese

Silicon

Phosphorus

Sulfur

Chromium

Nickel

Columbium (Niobium)

Copper

Nitrogen

0.50

14.00

4.20

0.15

2.50

0.05

0.60

1.00

0.025

15.50

5.00

0.30

3.20

0.05

3.1.1 Producer may test for any element not otherwise listed in Table 1 and include this analysis in the report of 4.5.

Limits of acceptability may be specified by purchaser (see 8.2.3).

3.1.2 Check Analysis

Composition variations shall meet the applicable requirements of AMS2248.

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SAE INTERNATIONAL AMS5346™D Page 3 of 11

3.2 Melting Practice

Castings and specimens shall be poured, at casting producer's facility, either from a melt (see 8.2.4) of a master heat or

directly from a master heat (see 3.4.2 and 8.2.5).

3.2.1 Revert (gates, sprues, risers, and rejected castings) may be used only in the preparation of master heats; revert

shall not be remelted directly, without refining, for pouring of castings. Melting of revert creates a new master heat.

3.2.2 Portions of two or more qualified master heats (see 3.4.2) may be melted together and poured into castings using

a procedure authorized by purchaser (see 8.2.6).

3.2.3 If melts are modified by replenishment (see 8.2.7), producer shall have a written procedure acceptable to purchaser

which defines the controls, test, and traceability criteria for both castings and separately cast specimens. Control

factors of 4.4.2.2 shall apply.

3.3 Condition

Castings shall be delivered in the solution treated and precipitation heat treated condition, except as specified in 3.3.1

or 3.3.2.

3.3.1 When specified by or when acceptable to purchaser, castings shall be solution heat treated twice and precipitation

heat treated.

3.3.2 When specified by purchaser, castings shall be homogenization, solution, and precipitation heat treated.

3.4 Specimens

Specimens shall be either separately cast, integrally cast (see 8.2.8), or machined from a casting, and shall conform to 3.2.

3.4.1 If specimens are separately cast, producer shall have a written procedure acceptable to purchaser. Control factors

of 4.4.2.2 shall apply.

3.4.2 Each master heat shall be qualified by evaluation of chemical and tensile specimens.

3.4.2.1 If replenishments are made at remelt as in 3.2.3, the frequency of sampling and testing used by the producer for

qualification to 3.4.2 shall be acceptable to purchaser.

3.4.2.2 Tensile tests of 3.4.2 are not required if these tests are conducted using integrally cast specimens (4.3.3.2) or

specimens machined-from-casting (4.3.3.3).

3.4.3 Chemical Analysis Specimens

Shall be of any convenient size and shape.

3.4.4 Tensile Specimens

Shall be of standard proportions in accordance with ASTM E8/E8M (see 8.3) with 0.250-inch (6.35-mm) diameter at the

reduced parallel gage section.

3.4.4.1 Separately cast and integrally cast specimens may be either cast to size or cast oversize and subsequently

machined to 0.250-inch (6.35-mm) diameter.

3.4.4.2 When integrally cast specimens or specimens machined-from-casting are specified, specimen size and/or

location shall be as agreed upon by purchaser and producer (see 8.2.9 and 8.7).

3.5 Heat Treatment

Castings and representative tensile specimens shall be heat treated in accordance with AMS-H-6875 except as specified

in 3.5.1.

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摘要：

SAE AMS 5346D-2019 是 SAE International（国际自动机工程师学会）发布的航空材料规范标准，主要针对耐热钢（如高合金钢、马氏体不锈钢等）在航空航天领域的应用要求。该标准规定了材料的化学成分、力学性能、热处理工艺、检验方法及质量控制等关键参数，适用于制造高温环境下工作的零部件，如发动机叶片、涡轮盘、排气系统组件等。相比前一版本，AMS 5346D 对材料的高温强度、抗氧化性和加工性能进行了更严格的定义，以确保在极端工况下的可靠性和寿命。作为行业权威的工程参考，该标准

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