ASTM A specification covers high-carbon bearing-quality steel to be used in the manufacture of anti-friction bearings. The most common. ASTM A 高碳耐磨轴承钢技术规范 – Designation: A – 98 Standard Speci?cation for High-Carbon Anti. ASTM A/AM Standard Specification for High-Carbon Anti-Friction Bearing Steel. standard by ASTM International, 10/01/ View all product details.

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Sizes, Shapes, and Dimensional Tolerances 6. Two thirds of all specimens and at least one from each ingot tested, or from the?

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Decarburization shall be measured using the microscopical methods described in Test Method E This abstract is a brief summary of the referenced standard.

ASTM A295 Grade 52100 annealed, cold-drawn (stress-relieved) Coils

Chemical Composition and Analysis 5. Lamellar aztm of other compositions shall be as agreed upon between manufacturer and purchaser. The scale used for rating the specimens shall be the Jernkontoret chart described in Practice E 45, Plate I-r. Sample Reduction Ratio S5. All tests and inspections shall be made at the place of manufacture, unless otherwise agreed to. Tests may be made on smaller or larger sections by agreement between manufacturer and purchaser. When annealing is specified in the order, the steel shall adhere to hardness requirements and have a completely spheroidized aa295, which shall accordingly be rated and reported as carbide size, carbide network, and lamellar content.


Special requirements agreed to at the time of purchase shall be noted on the certi? This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? A superscript epsilon e indicates an editorial change since the last revision q295 reapproval. The polished face shall be longitudinal to the direction of rolling.

Quality tests shown in 7. Historical Version s – view previous versions of standard.

ASTM A, High-Carbon Anti-Friction Bearing Steel – Special Steel

Materials shall conform to chemical compositions as specified herein, and to physical size and shape as agreed upon between the manufacturer and purchaser. At least one sample shall be taken from each strand. Link to Active This link will always route to the current Active version of the standard. Intentional additions of calcium or calcium alloys for deoxidation or inclusion shape control are not permitted unless speci? The supplier shall be required to report results of the macroetch and micro-inclusion rating tests detailed below.

The awtm particle method measures bearing steel cleanliness by evaluating the total length of macro-inclusions for a stated area or per unit area.

Your comments will receive asm consideration at a meeting of astn responsible technical committee, which you may attend. Last previous edition A — When two usable plates constitute a heat, two of the sample ingots shall be selected from the second usable plate poured. 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. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.


A minimum 3 to 1 reduction of rolled billets or forged sections is required for strand cast products. Where a single usable plate constitutes a heat, any three random ingots may be selected.

This specification covers high-carbon bearing-quality steel to be used in the manufacture of anti-friction bearings. Fields with sizes or numbers of all types of inclusions intermediate between wstm If you feel that your comments have not received a fair hearing you should wstm your views known to the ASTM Committee on Standards, at the address shown below.

One ingot shall be taken at random from the?

ASTM A / AM – 09 Standard Specification for High-Carbon Anti-Friction Bearing Steel

A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the Department of Defense. 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. When so included, a supplementary requirement shall have the same force as if it were in the body of the speci?

A — 98 Standard Speci? The sum of all lengths for each specimen shall be determined and expressed as total length per area inspected.