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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When two usable plates constitute a heat, two of the sample ingots shall be selected from the second usable plate poured. Q295 reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

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

Special requirements agreed to at the time of purchase shall be noted on the certi? This specification covers high-carbon bearing-quality steel to be used in the manufacture of anti-friction bearings. Magnetic Particle Method S3. Users of asm 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.

Decarburization shall be measured using the microscopical methods described in Test Method E Other methods of sampling shall be as agreed upon between manufacturer and purchaser. Historical Version s – view previous versions of standard.

ASTM A / AM – 14 Standard Specification for High-Carbon Anti-Friction Bearing Steel

Decarburization and Surface Imperfections 9. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Sample Reduction Ratio S5. All tests and inspections shall be made at the place of manufacture, unless otherwise agreed to. Quality tests shown in 7. Chemical Composition and Analysis 5.

The scale used for rating the specimens shall be the Jernkontoret chart described in Practice E 45, Plate I-r. Lamellar content of other compositions aetm be as agreed upon between manufacturer and purchaser. 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. Tests may be made on smaller or larger sections by agreement between manufacturer and purchaser.


Fields with sizes or numbers of all types of inclusions intermediate between con?

ASTM A295, High-Carbon Bearing Steel

Results are commonly expressed in millimeters per square metre. Originally published as A — 46 T. If you feel that your comments have not received a fair asfm you should make your views known to the ASTM Committee on Standards, at the address shown below.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

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

Sulfur Requirement for Machinability S4. When annealing is specified in the order, the steel shall adhere to hardness requirements and have a completely spheroidized microstructure, which shall accordingly be rated and reported as carbide size, carbide network, and lamellar content.

D Oxygen content applies to product analysis and shall be determined in accordance with Test Method E Intentional additions of calcium or calcium alloys for deoxidation or inclusion shape control are not permitted unless speci? Materials shall conform to chemical compositions as specified herein, and to physical size and shape as agreed upon between the manufacturer and purchaser. Referenced Aastm purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

The polished face shall be longitudinal to asstm direction of rolling. The supplier shall be required to report results of the macroetch and micro-inclusion rating tests detailed below. The sum of all lengths for each specimen shall be determined and expressed as total length per area inspected. Last previous edition A — ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.


A minimum 3 to 1 reduction of rolled asstm or forged sections is required for strand cast products. Sizes, Shapes, and Dimensional Tolerances 6. Current edition approved Dec. Combining values from the two systems may result in non-conformance with the standard.

Steels shall exhibit fine fracture grain size when quenched from normal austenitizing temperatures.

Decarburization and surface imperfections shall not exceed the limits also specified herein. When so included, a supplementary requirement shall have the same force as if it were in the body of the speci?

Two thirds of all specimens and at least one from each ingot tested, or from the? This abstract is a brief summary of the referenced standard. The magnetic particle method measures bearing steel cleanliness by evaluating the total length of macro-inclusions for a stated area or per unit area. Permissible variations in product analysis shall be in accordance with Speci? It is informational only and not an official part of the standard; the full text of the 2a95 itself must be referred to for its use and application.

Link to Active This link will always route to the current Active version of the standard. Other compositions may be speci? Where a single usable plate constitutes a heat, any three random ingots may be selected. A — 98 Axtm Speci? One ingot shall be taken at random from the? A superscript epsilon e indicates an editorial change since the last revision or reapproval. At least one sample shall be taken from each strand.