ASTM B 848/B848M : 2021
Current
The latest, up-to-date edition.
Standard Specification for Powder Forged (PF) Ferrous Materials
Hardcopy , PDF
English
16-09-2021
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
B 09
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| DocumentType |
Standard
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| Pages |
10
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| PublisherName |
American Society for Testing and Materials
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| Status |
Current
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| Supersedes |
1.1This specification covers powder forged ferrous materials fabricated by hot densification of atomized prealloyed or iron powders and intended for use as structural parts.
1.2This specification covers powder forged parts made from the following materials:
1.2.1Compositions:
1.2.1.1PF-10XX Carbon Steel (produced from atomized iron powder and graphite powder),
1.2.1.2PF-10CXX Copper-Carbon Steel (produced from atomized iron powder, copper and graphite powders),
1.2.1.3PF-11XX Carbon Steel with manganese sulfide for enhanced machinability (produced from atomized iron powder, manganese sulfide, and graphite powders),
1.2.1.4PF-11CXX, PF-1130CXX, and PF-1135CXX Copper-Carbon Steels with manganese sulfide for enhanced machinability (produced from atomized iron powder, copper, manganese sulfide, and graphite powders),
1.2.1.5PF-42XX Nickel-Molybdenum Steel (produced from prealloyed atomized iron-nickel-molybdenum powder and graphite powder),
1.2.1.6PF-46XX Nickel-Molybdenum Steel (produced from prealloyed atomized iron-nickel-molybdenum powder and graphite powder),
1.2.1.7PF-44XX Molybdenum Steel (produced from prealloyed atomized iron-molybdenum powder and graphite powder), and
1.2.1.8PF-49XX Molybdenum Steel (produced from prealloyed atomized iron-molybdenum powder and graphite powder).
Note 1:Alloy composition designations are modifications of the AISI-SAE nomenclature. For example: 10CXX designates a plain carbon steel containing copper and XX amount of carbon. Compositional limits of alloy and impurity elements may be different from the AISI-SAE limits. Chemical composition limits are specified in Section 6.
Note 2:XX designates the forged carbon content, in hundredths of a percent, that is specified by the purchaser for the application. For a given specified carbon content, the permissible limits shall be as specified in 6.2.
Note 3:The old acronym for powder forging P/F has been replaced by PF throughout the document. The change in the prefix for the material designations is just to match the currently approved acronym for powder forging. No change has been made to the material specification and performance characteristics for the various powder forged materials.
1.2.2Grades:
1.2.2.1Grade A—Density equivalent to a maximum of 0.5 % porosity. The minimum density of those sections of the powder forged part so designated by the applicable part drawing shall not be less than the value specified in Table 1.
1.2.2.2Grade B—Density equivalent to a maximum of 1.5 % porosity. The minimum density of those sections of the powder forged part so designated by the applicable part drawing shall not be less than the value specified in Table 1.
1.3Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.4This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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| ASTM E 1019 : 2024 | Standard Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys by Combustion and Inert Gas Fusion Techniques |
| ASTM B 243 : 2020 | Standard Terminology of Powder Metallurgy |
| ASTM E 23 : 2018 | Standard Test Methods for Notched Bar Impact Testing of Metallic Materials |
| ASTM B 797 : 2020 | Standard Test Method for Surface Finger-Oxide Penetration Depth and Presence of Interparticle Oxide Networks in Powder Forged (PF) Steel Parts |
| ASTM E 23 : 2023 | Standard Test Methods for Notched Bar Impact Testing of Metallic Materials |
| ASTM E 350 : 2023 | Standard Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron |
| ASTM B 243 : 2023 | Standard Terminology of Powder Metallurgy |
| ASTM E 18 : 2019 | Standard Test Methods for Rockwell Hardness of Metallic Materials |
| ASTM E 350 : 2018 | Standard Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron |
| ASTM B 243 : 2024 | Standard Terminology of Powder Metallurgy |
| ASTM B 796 : 2024 | Standard Test Method for Nonmetallic Inclusion Content of Ferrous Powders Intended for Powder Forging (PF) Applications |
| ASTM B 795 : 2024 | Standard Test Method for Determining the Percentage of Alloyed or Unalloyed Iron Contamination Present in Powder Forged (PF) Steel Materials |
| ASTM E 29 : 2022 | Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications |
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