ASTM A756

This specification deals with the requirements for chromium-carbon bearing quality stainless steel to be used in the manufacture of anti-friction bearings. Chemical requirements shall conform to the required compositions of carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, copper, and molybdenum. Heat analysis and product analysis shall made. Decarburization and surface imperfection limits are specified. When annealing will be made, the steel should have a completely spheroidized microstructure and the hardness is specified.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers the requirements for chromium-carbon bearing quality stainless steel to be used in the manufacture of anti-friction bearings.

1.2 Supplementary Requirements of an optional nature are provided and when desired shall be so stated in the order.

1.3 The values stated in inch-pound units are to be regarded as the standard.

2. Referenced Documents

ASTM Standards
A484/A484M Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
E1019 Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel and in Iron, Nickel, and Cobalt Alloys
E1077 Test Method for Estimating the Depth of Decarburization of Steel Specimens
E381 Test Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E45 Test Methods for Determining the Inclusion Content of Steel
Other Standard
SAEJ418a Grain Size Determination of Steel

Index Terms

anti-friction bearings; ball/roller bearings-passenger/freight cars/locomotive tenders; chromium-carbon bearing stainless steel; chromium-carbon bearing stainless steel (for anti-friction bearings); Number Code 77.140.20 (Steels of high quality)

Citing ASTM Standards

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