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A — 03 Standard Speci? A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision asttm reapproval. This standard x485 been approved for use by agencies of the Department of Defense. Current edition approved April 10, Originally approved in Last previous edition approved in as A — ISO Part Ball and Roller Bearing Steels7 3.

Chemical Composition and Analysis 5. Other compositions may be speci?

The chemical composition thus determined shall conform to the requirements speci? Permissible variations in product analysis shall be in accordance with Speci? Sizes, Shapes, and Dimensional Tolerances 6.

Ti max Cu max 0. B Intentional additions of calcium or calcium alloys for deoxidation or inclusion shape control are not permitted unless speci? D Oxygen content applies to product analysis and shall be determined in accordance with Test Methods E E A maximum titanium content may be agreed upon at the time of inquiry and order. Quality tests shown in 7.

ASTM A485 Grade 1 annealed, cold-drawn (stress-relieved) Coils

Tests may be made on smaller or larger sections a48 agreement with the purchaser. A minimum of 3 to 1 reduction of rolled billets or forged sections is required for strand cast products.

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One ingot shall be taken at random from the? When a heat is constituted by two usable plates, two of the sample ingots shall be selected from the second usable plate poured. When a heat consists of a single usable plate, any three random ingots may be selected. Other methods of sampling shall be as agreed upon between manufacturer and purchaser. At least one sample shall be taken from each strand.

The polished face shall be longitudinal to the direction of rolling. Two thirds of all specimens and at least one from each ingot tested, or from the? Normalizing followed by spheroidize annealing shall precede heating for end quenching. Maximum Hardness Rockwell B B 92 Coils, bars, and tubes A Cold asfm material is not included. Decarburization and Satm Imperfections Decarburization shall be measured using the microscopical methods described in Test Method E Microstructure and Hardness All tests a85 inspections shall be made at the place of manufacture, unless otherwise agreed to.

ASTM A Steel, Grade 4

Special requirements agreed to at the time of purchase must be noted on the certi? When so included, a supplementary requirement shall have the same force as if it were in the body of the speci?

Supplementary requirements details not fully described shall be agreed upon between the purchaser and the supplier, but shall not negate any of the requirements in the body of the speci?

Magnetic Particle Method S2.

The magnetic particle method measures bearing steel cleanliness by evaluating the total length of macro-inclusions for a stated area or per unit area. The sum of all lengths for each specimen shall be determined and expressed as total length per area inspected.

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Sulfur Requirements for Machinability S3. The method used shall be x485 upon between the purchaser and the steel supplier at the time of inquiry and order. Sample Reduction Ratio S5.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

This standard is subject to revision at any time zstm the responsible x485 committee and must be reviewed every? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

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