ASTM B853-16

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: 30-Sep-2016
• ICS: 77.160 - Powder metallurgy
• Technical Committee: B09 - Metal Powders and Metal Powder Products
• Drafting Committee: B09.11 - Near Full Density Powder Metallurgy Materials

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 −16
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* E1086 TestMethodforAnalysisofAusteniticStainlessSteel
by Spark Atomic Emission Spectrometry
1.1 This specification covers stainless steel powder metal-
3 G48 Test Methods for Pitting and Crevice Corrosion Resis-
lurgy (PM) structural components with a 7.7-g/cm minimum
tance of Stainless Steels and Related Alloys by Use of
density that are fabricated from prealloyed powder consisting
2 Ferric Chloride Solution
primarily of iron, chromium, nickel, molybdenum, and boron
and are intended for use in corrosive service.
3. Terminology
1.2 With the exception of the values for density and the
3.1 Definitions—Definitions of powder metallurgy terms
mass used to determine density, for which the use of the gram
can be found in Terminology B243. Additional descriptive
3
per cubic centimetre (g/cm ) and gram (g) units is the long-
information is in the Related Material section of Volume 02.05
standingindustrypractice,thevaluesininch-poundunitsareto
of the Annual Book of ASTM Standards.
be regarded as standard. The values given in parentheses are
mathematical conversions to SI units that are provided for
4. Ordering Information
information only and are not considered standard.
4.1 Orders for components under this specification shall
2. Referenced Documents
include the following information:
3
4.1.1 Dimensions (see Section 9),
2.1 ASTM Standards:
4.1.2 Chemical composition (see Section 6, 10.1, and Table
A262 Practices for Detecting Susceptibility to Intergranular
1),
Attack in Austenitic Stainless Steels
4.1.3 Density (see Section 7),
B117 Practice for Operating Salt Spray (Fog) Apparatus
4.1.4 Mechanical properties (see Section 8, 10.2, and Table
B243 Terminology of Powder Metallurgy
2),
B311 Test Method for Density of Powder Metallurgy (PM)
4.1.5 Certification (see Section 13),
Materials Containing Less Than Two Percent Porosity
4.1.6 Reference to the standard.
E8 Test Methods for Tension Testing of Metallic Materials
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.
byWavelength Dispersive X-Ray Fluorescence Spectrom-
5.2 The sintering temperature is dependent on the chemical
etry
composition of the powder.
E1019 Test Methods for Determination of Carbon, Sulfur,
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
6. Chemical Composition
Alloys by Various Combustion and Fusion Techniques
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
6.2 Chemical analysis should be made in accordance with
Powders and Metal Powder Products and is the direct responsibility of Subcom-
mittee B09.11 on Near Full Density Powder Metallurgy Materials. Test Methods E354, E572, E1019, and E1086.
Current edition approved Oct. 1, 2016. Published October 2016. Originally
approved in 1994. Last previous edition approved in 2012 as B853 – 12. DOI:
7. Physical Properties
10.1520/B0853-16.
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 [e-mail]. 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 ----------------------
B853−16
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
10.2 Mechanical Tes
...

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 − 12 B853 − 16
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 the values for density and the mass used to determine density, for which the use of the gram per cubic
3
centimetre (g/cm ) 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.
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 Wavelength Dispersive 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 Analysis of Austenitic Stainless Steel by Spark Atomic Emission Spectrometry
G48 Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride
Solution
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),
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),
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 Nov. 15, 2012Oct. 1, 2016. Published November 2012October 2016. Originally approved in 1994. Last previous edition approved in 20072012
as B853 – 07.B853 – 12. DOI: 10.1520/B0853-12.10.1520/B0853-16.
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 [e-mail]. 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 − 16
TABLE 1 Chemical Composition Requirements
Element Composition Limits, Mass %
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.
A
TABLE 2 Typical Mechanical Properties
0.2 % Offset yield strength 33 000 psi (228 MPa)
Ultimate tensile strength 76 000 psi (520 MPa)
Elongation in one inch 23 %
Apparent Hardness 75 HRB
A
Determined on a cold-pressed and vacuum-sintered standard flat unmachined
test specimen for powder metallurgy (PM) products (see Test Methods E8).
4.1.6 Reference to the standard.
5. Materials and Manufacture
5.1 Structural comp
...