SAE AMS 5344H-2026 钢耐腐蚀熔模铸件 16Cr-4.1Ni-0.28Cb-3.2Cu 均匀化固溶和沉淀热处理（H900） 180 ksi（1241兆帕）拉伸强度 (UNS J92180 and J92200)

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For more information on this standard, visit

https://www.sae.org/standards/content/AMS5344H/

AEROSPACE

MATERIAL SPECIFICATION

AMS5344™

REV. H

Issued 1963-07

Reaffirmed 2013-10

Revised 2025-12

Superseding AMS5344G

(R) Steel, Corrosion-Resistant, Investment Castings,

16Cr - 4.1Ni - 0.28Cb - 3.2Cu,

Homogenization, Solution, and Precipitation Heat Treated (H900),

180 ksi (1241 MPa) Tensile Strength (17-4)

(Composition similar to UNS J92180 and J92200)

RATIONALE

AMS5344H is the result of a Five-Year Review and update of the specification. The revision updates the approval

requirements (throughout), updates the heat-treatment requirements (see 3.5), adds strain rate control (see 3.6.2), updates

Table 4 and 4.3.5.1, adds welding and dimensional controls (see 4.4.2.2 and 8.6), updates reporting (see 4.5), removes

exceptions clauses (see 3.8 and 4.5.5 Rev. G) as not applicable, and adds note on naming convention (see 8.5).

1. SCOPE

1.1 Form

This specification covers a corrosion-resistant steel in the form of investment castings homogenized and solution and

precipitation heat treated to 180 ksi (1241 MPa) tensile strength.

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 to such applications (see 8.2).

1.2.1 Certain processing procedures and service conditions may cause these castings to become subject to

stress-corrosion cracking; ARP1110 recommends practices to minimize such conditions.

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.

SAE INTERNATIONAL AMS5344™H Page 2 of 11

2.1 SAE Publications

Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (U.S. and

Canada only) or +1 724-776-4970 (outside U.S. and Canada), 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

AMS2700 Passivation of Corrosion Resistant Steels

AMS2761 Heat Treatment of Steel Raw Materials

AMS2804 Identification, Castings

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

Alloys

AS7766 Terms Used in Aerospace Metals Specifications

HS-1086 Metals and Alloys in the Unified Numbering System

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 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

2.3 Definitions

Terms used in AMS are defined in AS7766 and as follows:

INTEGRALLY CAST SPECIMEN: An attached specimen that is cast in the mold and remains with the casting lot through

the completion of all heat-treatment operation(s) required of the producer. The casting drawing may identify a specific

location for the attachment of each integrally cast specimen.

LOT: For room temperature tensile and hardness testing, a lot shall consist of all castings of the same part number, poured

from consecutive melts of a single master heat, and processed through solution and precipitation heat-treat operations in

the same furnace loads. For visual and nondestructive testing, a lot shall consist of castings of the same part number,

manufactured under the same process control parameters of 4.4.2.2, and submitted for those tests in a single group.

SAE INTERNATIONAL AMS5344™H Page 3 of 11

MASTER HEAT: Refined metal of a single furnace charge that may be poured directly into castings and/or converted into

ingot for remelting in accordance with 3.2. One or more melts can be poured from a single master heat. Qualification of a

master heat is described in 3.4.2.

MELT: All castings poured from a single furnace charge. Also referred to as remelt, sub-melt, heat, or sub-heat.

REFINED METAL: Metal derived from raw materials in the form of virgin elements, master alloy, and/or revert melted in any

combination, replenished as needed, fluxed for nonmetallics, and then degassed as necessary.

REPLENISHMENT: Virgin element and/or master alloy additions introduced to the furnace during the final stage of melting,

as necessary, to bring the melt or master heat into conformance with the specified composition.

3. TECHNICAL REQUIREMENTS

3.1 Composition

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 the cognizant engineering organization (CEO).

Table 1 - Composition

Element

Min

Max

Carbon

Manganese

Silicon

Phosphorus

Sulfur

Chromium

Nickel

Columbium (Niobium)

Copper

Aluminum

Tin

Nitrogen

0.50

15.50

3.60

0.15

2.80

0.06

0.70

1.00

0.025

16.70

4.60

0.40

3.50

0.05

0.02

0.05

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

acceptability may be specified by the CEO.

3.1.2 Check Analysis

Composition variations shall meet the applicable requirements of AMS2248.

3.2 Melting Practice

Castings and specimens shall be poured at the casting producer’s facility either from a melt of a master heat or directly from

a master heat (see 3.4.2 and 2.3).

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 the CEO (see 2.3).

3.2.3 If melts are modified by replenishment (see 2.3), the producer shall have a written procedure acceptable to the

CEO that defines the controls, tests, and traceability criteria for both castings and separately cast specimens.

Control factors of 4.4.2.2 shall apply.

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标签： #腐蚀 #拉伸 #铸件

摘要：

SAE AMS 5344H-2026 是一项针对耐腐蚀钢熔模铸件的最新航空航天材料规范，明确规定采用16Cr-4.1Ni-0.28Cb-3.2Cu（对应UNS J92180和J92200）成分设计，要求经历均匀化、固溶处理及沉淀硬化（H900）热处理工艺，最终达到不低于180 ksi（1241 MPa）的拉伸强度。该标准为高强度、高耐蚀性不锈钢铸件提供了统一的生产与验收依据，适用于航空航天及高端工业领域中对抗腐蚀性能和力学可靠性要求严苛的结构部件。AMS 5344H 在继承前版技术指标的基础上，

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SAE AMS 5344H-2026 钢耐腐蚀熔模铸件 16Cr-4.1Ni-0.28Cb-3.2Cu 均匀化固溶和沉淀热处理（H900） 180 ksi（1241兆帕）拉伸强度 (UNS J92180 and J92200).pdf

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SAE AMS 5344H-2026 钢耐腐蚀熔模铸件 16Cr-4.1Ni-0.28Cb-3.2Cu 均匀化固溶和沉淀热处理（H900） 180 ksi（1241兆帕）拉伸强度 (UNS J92180 and J92200)

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SAE AMS 5344H-2026 钢 耐腐蚀 熔模铸件 16Cr-4.1Ni-0.28Cb-3.2Cu 均匀化 固溶和沉淀热处理（H900） 180 ksi（1241兆帕）拉伸强度 (UNS J92180 and J92200)

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SAE AMS 5344H-2026 钢耐腐蚀熔模铸件 16Cr-4.1Ni-0.28Cb-3.2Cu 均匀化固溶和沉淀热处理（H900） 180 ksi（1241兆帕）拉伸强度 (UNS J92180 and J92200)