SAE AMS 5640T:2003 pdf download Steel, Corrosion-Resistant, Bars, Wire, and Forgings 18Cr – 9.0Ni Free Machining
1. SCOPE:
1.1 Form: This specification covers three types of a free-machining, corrosion-resistant steel in the form of bars, wire, forgings, and forging stock.
1.2 Application: These products have been used typically for parts on which the amount of machining warrants use of a free-machining grade of steel requiring corrosion resistance similar to the 18-8 type steels but not subjected to temperatures exceeding 700 °F (371 °C) during fabrication or in service, but usage is not limited to such applications.
1.3 Classification:
The steels covered by this specification are classified as follows:
Type 1: 18Cr – 9.0Ni – 0.28S
Type 2: 18Cr – 9.0Ni – 0.14P – 0.28Se
Type 3: 18Cr – 8.5Ni – 3.5Mn – 0.28S
1.3.1 Unless a specific type is ordered, any type 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, 400 Commonwealth Drive, Warrendale, PA 15096-0001 or www.sae.org.
AMS 2241 Tolerances, Corrosion and Heat-Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and Wire
AMS 2248 Chemical Check Analysis Limits, Corrosion and Heat-Resistant Steels and Alloys,Maraging and Other Highly-Alloyed Steels, and Iron Alloys
AMS 2371 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steels and Alloys, Wrought Products and Forging Stock
AMS 2374 Quality Assurance Sampling and Testing, Corrosion and Heat-Resistant Steel and Alloy Forgings
AMS 2806 Identification, Bars, Wire, Mechanical Tubing, and Extrusions, Carbon and Alloy Steels and Corrosion and Heat-Resistant Steels and Alloys
AMS 2808 Identification, Forgings
2.2 ASTM Publications:
Available from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959 or www.astm.org.
ASTM A 370 Mechanical Testing of Steel Products
ASTM E 353 Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron 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 E 353, by spectrochemical methods, or by other analytical methods acceptable to purchaser.
3.1.1 Check Analysis: Composition variations shall meet the applicable requirements of AMS 2248.
3.2 Condition:
The product shall be supplied in the following condition:
3.2.1 Bars, Wire, and Forgings: Solution heat treated free from continuous carbide network and descaled.
3.2.1.1 All hexagons regardless of size, other bars 2.75 inches (69.8 mm) and under in nominal diameter or least distance between parallel sides, and wire shall be cold finished.
SAE AMS 5640T:2003 pdf download
