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ASTM B853-12

(Specification)

Standard Specification for Powder Metallurgy (PM) Boron Stainless Steel Structural Components

Standard Specification for Powder Metallurgy (PM) Boron Stainless Steel Structural Components

ABSTRACT
This specification covers stainless steel powder metallurgy (PM) structural components with minimum densities that are fabricated from prealloyed powder consisting primarily of iron, chromium, nickel, molybdenum, and boron2 and are intended for use in corrosive service. Structural components shall be made by cold pressing and sintering prealloyed powder. The chemical composition; physical properties such as density; and mechanical properties such as tensile strength, elongation and hardness; are detailed.
SCOPE
1.1 This specification covers stainless steel powder metallurgy (PM) structural components with a 7.7-g/cm3 minimum density that are fabricated from prealloyed powder consisting primarily of iron, chromium, nickel, molybdenum, and boron2 and are intended for use in corrosive service.  
1.2 With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm3) and gram (g) units is the longstanding industry practice, the values in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

General Information

Status
Historical
Publication Date
14-Nov-2012
ICS
77.160 - Powder metallurgy
Technical Committee
B09 - Metal Powders and Metal Powder Products
Drafting Committee
B09.11 - Near Full Density Powder Metallurgy Materials
Current Stage
Ref Project

Relations

Replaces
ASTM B853-07 - Standard Specification for Powder Metallurgy (PM) Boron Stainless Steel Structural Components
Effective Date
15-Nov-2012
Referred By
ASTM B925-15(2022) - Standard Practices for Production and Preparation of Powder Metallurgy (PM) Test Specimens
Effective Date
15-Nov-2012

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:B853 −12
StandardSpecification for
Powder Metallurgy (PM) Boron Stainless Steel Structural
1
Components
This standard is issued under the fixed designation B853; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* E1086 Test Method for Atomic Emission Vacuum Spectro-
metric Analysis of Stainless Steel by Point-to-Plane Ex-
1.1 This specification covers stainless steel powder metal-
3 citation Technique
lurgy (PM) structural components with a 7.7-g/cm minimum
G48 Test Methods for Pitting and Crevice Corrosion Resis-
density that are fabricated from prealloyed powder consisting
2 tance of Stainless Steels and Related Alloys by Use of
primarily of iron, chromium, nickel, molybdenum, and boron
Ferric Chloride Solution
and are intended for use in corrosive service.
1.2 With the exception of the values for density and the 3. Terminology
mass used to determine density, for which the use of the gram
3.1 Definitions—Definitions of powder metallurgy terms
3
per cubic centimetre (g/cm ) and gram (g) units is the long-
can be found in Terminology B243. Additional descriptive
standingindustrypractice,thevaluesininch-poundunitsareto
information is in the Related Material section of Volume 02.05
be regarded as standard. The values given in parentheses are
of the Annual Book of ASTM Standards.
mathematical conversions to SI units that are provided for
information only and are not considered standard. 4. Ordering Information
4.1 Orders for components under this specification shall
2. Referenced Documents
include the following information:
3
2.1 ASTM Standards:
4.1.1 Dimensions (see Section 9),
A262 Practices for Detecting Susceptibility to Intergranular
4.1.2 Chemical composition (see Section 6, 10.1, and Table
Attack in Austenitic Stainless Steels
1),
B117 Practice for Operating Salt Spray (Fog) Apparatus
4.1.3 Density (see Section 7),
B243 Terminology of Powder Metallurgy
4.1.4 Mechanical properties (see Section 8, 10.2, and Table
B311 Test Method for Density of Powder Metallurgy (PM)
2),
Materials Containing Less Than Two Percent Porosity
4.1.5 Certification (see Section 13),
E8 Test Methods for Tension Testing of Metallic Materials
4.1.6 Reference to the standard.
E354 Test Methods for Chemical Analysis of High-
5. Materials and Manufacture
Temperature,Electrical,Magnetic,andOtherSimilarIron,
Nickel, and Cobalt Alloys
5.1 Structural components shall be made by cold pressing
E572 Test Method forAnalysis of Stainless andAlloy Steels
and sintering prealloyed powder.
by X-ray Fluorescence Spectrometry
5.2 The sintering temperature is dependent on the chemical
E1019 Test Methods for Determination of Carbon, Sulfur,
composition of the powder.
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
Alloys by Various Combustion and Fusion Techniques
6. Chemical Composition
6.1 The material shall conform to the composition limits
specified in Table 1.
1
This specification is under the jurisdiction ofASTM Committee B09 on Metal
Powders and Metal Powder Products and is the direct responsibility of Subcom- 6.2 Chemical analysis should be made in accordance with
mittee B09.11 on Near Full Density Powder Metallurgy Materials.
Test Methods E354, E572, E1019, and E1086.
Current edition approved Nov. 15, 2012. Published November 2012. Originally
approved in 1994. Last previous edition approved in 2007 as B853 – 07. DOI:
7. Physical Properties
10.1520/B0853-12.
2
U.S. Patents 3980444, 4014680, 4032336.
7.1 Density:
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 3
7.1.1 The sintered density shall be 7.7 g/cm minimum.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1.2 Density shall be determined in accordance with Test
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Method B311.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B853−12
TABLE 1 Chemical Composition Requirements
10. Sampling
Element Composition Limits, Mass %
10.1 Chemical Analysis—If required by purchase
Carbon 0.05 max
agreement, at least one sample for chemical analysis shall be
Manganese 2.00 max
Phosphorus 0.03 max
taken from each lot. A representative sample of chips may be
Sulfur 0.03 max
obtained by dry-milling, drilling, or crushing at least two
Silicon 1.0 max
pieces without lubrication using clean dry tools.
Chromium 22.0 to 24.0
Nickel 17.0 to 19.0
10.
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B853 − 07 B853 − 12
Standard Specification for
Powder Metallurgy (PM) Boron Stainless Steel Structural
1
Components
This standard is issued under the fixed designation B853; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
3
1.1 This specification covers stainless steel powder metallurgy (PM) structural components with a 7.7-g/cm minimum density
2
that are fabricated from prealloyed powder consisting primarily of iron, chromium, nickel, molybdenum, and boron and are
intended for use in corrosive service.
1.2 With the exception of density values, for which g/cm3 the values for density and the mass used to determine density, for
3
which the use of the gram per cubic centimetre (g/cm ) and gram (g) units is the longstanding industry standard,practice, the values
stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are converted in accordance
withmathematical conversions to SI IEEE/ASTM SI 10 and are for information only.units that are provided for information only
and are not considered standard.
2. Referenced Documents
3
2.1 ASTM Standards:
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
B117 Practice for Operating Salt Spray (Fog) Apparatus
B243 Terminology of Powder Metallurgy
B311 Test Method for Density of Powder Metallurgy (PM) Materials Containing Less Than Two Percent Porosity
E8 Test Methods for Tension Testing of Metallic Materials
E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and
Cobalt Alloys
E572 Test Method for Analysis of Stainless and Alloy Steels by X-ray Fluorescence Spectrometry
E1019 Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys by
Various Combustion and Fusion Techniques
E1086 Test Method for Atomic Emission Vacuum Spectrometric Analysis of Stainless Steel by Point-to-Plane Excitation
Technique
G48 Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride
Solution
IEEE/ASTM SI 10 American National Standard for Metric Practice
3. Terminology
3.1 Definitions—Definitions of powder metallurgy terms can be found in Terminology B243. Additional descriptive information
is in the Related Material section of Volume 02.05 of the Annual Book of ASTM Standards.
4. Ordering Information
4.1 Orders for components under this specification shall include the following information:
4.1.1 Dimensions (see Section 9),
4.1.2 Chemical composition (see Section 6, 10.1, and Table 1),
1
This specification is under the jurisdiction of ASTM Committee B09 on Metal Powders and Metal Powder Products and is the direct responsibility of Subcommittee
B09.11 on Near Full Density Powder Metallurgy Materials.
Current edition approved Oct. 1, 2007Nov. 15, 2012. Published November 2007November 2012. Originally approved in 1994. Last previous edition approved in 20022007
as B853 – 02.B853 – 07. DOI: 10.1520/B0853-07.10.1520/B0853-12.
2
U.S. Patents 3980444, 4014680, 4032336.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B853 − 12
TABLE 1 Chemical Composition Requirements
Composition Limits,
Element
WeightMass %
Carbon 0.05 max
Manganese 2.00 max
Phosphorus 0.03 max
Sulfur 0.03 max
Silicon 1.0 max
Chromium 22.0 to 24.0
Nickel 17.0 to 19.0
Molybdenum 3.0 to 4.0
Boron 0.20 to 0.50
Nitrogen 0.10 max
A
Iron balance
A
Iron shall be determined arithmetically by difference.
4.1.3 Density (see Section 7),
4.1.4 Mechanical properties (see Section 8, 10.2, and Table 2),
4.1.5 Certification (see Section 13),
4.1.6 Reference to the standard.
5. Materials and Manufacture
5.1 Structural components shall be made by cold pressing and sintering prealloyed powder.
5.2 The sintering temperature is dependent on the chemical comp
...

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SCOPE
1.1 This standard describes three related test methods that cover the measurement of physical properties of oil-impregnated powder metallurgy products.  
1.1.1 Determination of the volume percent of oil contained in the material.  
1.1.2 Determination of the efficiency of the oil-impregnation process.  
1.1.3 Determination of the percent surface-connected porosity by oil impregnation.  
1.2 Units—With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm3) and gram (g) units is the long-standing industry practice, the values in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This 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.

  • Standard
    6 pages
    English language
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  • Standard
    6 pages
    English language
    sale 15% off