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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Quality tests shown in 7. Other compositions may be speci? 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. When two usable plates constitute a heat, two of the sample ingots shall be selected from the second usable plate poured. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Sizes, Shapes, and Dimensional Tolerances 6.
At least one sample shall be taken z295 each strand. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Steels shall exhibit fine fracture grain size when quenched from normal austenitizing temperatures.
Decarburization and Surface Imperfections 9.
This specification covers high-carbon bearing-quality steel to be used in the manufacture of anti-friction bearings. 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 asstm and micro-inclusion rating tests detailed below. Permissible variations in product analysis shall be in accordance with Speci?
ASTM A295 Grade 52100 annealed, cold-drawn (stress-relieved) Coils
D Oxygen content applies to product analysis and shall astj determined in accordance with Test Method E Chemical Composition and Analysis 5. A minimum 3 to 1 reduction of rolled billets or forged sections is required for strand cast products.
Historical Version s – view previous versions of standard. Sample Reduction Ratio S5.
ASTM A, High-Carbon Anti-Friction Bearing Steel – Special Steel
Sulfur Requirement for Machinability S4. Decarburization shall be measured using the microscopical methods described in Test Method E The chemical composition thus determined shall conform to the requirements speci? All tests and inspections shall be made at the place of manufacture, unless otherwise agreed to. Decarburization and surface imperfections shall not exceed the limits also specified herein.
It is informational only and not an official ashm of the standard; the full text of the standard itself must be referred to for its use and application.
ASTM A295, High-Carbon Bearing Steel
Originally published as A — 46 T. Link to Active This link will always route to the current Active version of the standard.
The scale used for rating the specimens shall be the Jernkontoret chart described in Practice E 45, Plate I-r. The sum of all lengths for each specimen shall be determined and expressed as total length per area inspected. 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. Users of this standard are expressly advised that determination of the validity of any such a95 rights, and the risk of infringement of such rights, are entirely their own responsibility.
Current edition approved Dec. Last previous edition A — A number in parentheses indicates the year of last reapproval.
ASTM A – 98 Standard Specification for High-Carbon Anti-Friction Bearing Steel
This standard has been z295 for use by agencies of the Department of Defense. This abstract is a brief summary of the referenced standard. Combining values from the two systems may result in non-conformance with the standard. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. One ingot shall be taken at random from the? Results are commonly expressed in millimeters per square metre.