Standard Specification for Metal Injection Molded (MIM) Materials

ABSTRACT
This specification covers ferrous metal injection molded (MIM) materials fabricated by mixing elemental or pre-alloyed metal powders with binders, injecting into a mold, debinding, and sintering with or without subsequent heat treatment. These materials are: low-alloy steel produced from admixtures of iron powder and other alloying elements such as nickel and molybdenum (MIM-2200 and MIM-2700); low-alloy steel produced from admixtures of iron powder and other alloying elements such as nickel, molybdenum, and carbon (MIM-4605); austenitic stainless steel produced from pre-alloyed powder or an admixture of powders (MIM-316L); precipitation hardening stainless steel produced from pre-alloyed powder or an admixture of powders (MIM-17-4 PH); and ferritic stainless steel produced from pre-alloyed powder or an admixture of powders (MIM-430L). Chemical analysis shall be performed for the elements copper, chromium, molybdenum, and nickel. The materials shall be subjected to tensile test and unnotched Charpy impact energy test.
SCOPE
1.1 This specification covers ferrous metal injection molded materials fabricated by mixing elemental or pre-alloyed metal powders with binders, injecting into a mold, debinding, and sintering, with or without subsequent heat treatment.  
1.2 This specification covers the following injection molded materials.  
1.2.1 Compositions:  
1.2.1.1 MIM-2200, low-alloy steel
1.2.1.2 MIM-2700, low-alloy steel
1.2.1.3 MIM-4605, low-alloy steel
1.2.1.4 MIM-4140, low-alloy steel
1.2.1.5 MIM-316L, austenitic stainless steel
1.2.1.6 MIM-17-4 PH, precipitation hardening stainless steel
1.2.1.7 MIM-420, ferritic stainless steel
1.2.1.8 MIM-430L, ferritic stainless steel
1.2.1.9 MIM-Cu, copper  
1.3 Chemical composition limits are specified in Table 1. (A) Excluding silver.  
1.4 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 or in separate tables are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.5 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 and health practices and determine the applicability of regulatory limitations prior to use.

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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:B883 −15
Standard Specification for
1
Metal Injection Molded (MIM) Materials
This standard is issued under the fixed designation B883; 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* 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This specification covers ferrous metal injection molded
B243 Terminology of Powder Metallurgy
materials fabricated by mixing elemental or pre-alloyed metal
B311 Test Method for Density of Powder Metallurgy (PM)
powders with binders, injecting into a mold, debinding, and
Materials Containing Less Than Two Percent Porosity
sintering, with or without subsequent heat treatment.
B933 TestMethodforMicroindentationHardnessofPowder
1.2 This specification covers the following injection molded
Metallurgy (PM) Materials
materials.
B962 Test Methods for Density of Compacted or Sintered
1.2.1 Compositions: Powder Metallurgy (PM) Products Using Archimedes’
Principle
1.2.1.1 MIM-2200, low-alloy steel
E8 Test Methods for Tension Testing of Metallic Materials
1.2.1.2 MIM-2700, low-alloy steel
E18 Test Methods for Rockwell Hardness of Metallic Ma-
1.2.1.3 MIM-4605, low-alloy steel
terials
1.2.1.4 MIM-4140, low-alloy steel
E228 Test Method for Linear Thermal Expansion of Solid
1.2.1.5 MIM-316L, austenitic stainless steel Materials With a Push-Rod Dilatometer
E350 Test Methods for Chemical Analysis of Carbon Steel,
1.2.1.6 MIM-17-4 PH, precipitation hardening stainless
Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and
steel
Wrought Iron
1.2.1.7 MIM-420, ferritic stainless steel
E415 Test Method for Analysis of Carbon and Low-Alloy
1.2.1.8 MIM-430L, ferritic stainless steel
Steel by Spark Atomic Emission Spectrometry
1.2.1.9 MIM-Cu, copper
E1019 Test Methods for Determination of Carbon, Sulfur,
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
1.3 Chemical composition limits are specified in Table 1.
Alloys by Various Combustion and Fusion Techniques
1.4 With the exception of the values for density and the
E1086 TestMethodforAnalysisofAusteniticStainlessSteel
mass used to determine density, for which the use of the gram by Spark Atomic Emission Spectrometry
3
per cubic centimetre (g/cm ) and gram (g) units is the long- E1461 Test Method for Thermal Diffusivity by the Flash
Method
standingindustrypractice,thevaluesininch-poundunitsareto
E1621 Guide for ElementalAnalysis by Wavelength Disper-
be regarded as standard. The values given in parentheses or in
sive X-Ray Fluorescence Spectrometry
separate tables are mathematical conversions to SI units that
F1089 Test Method for Corrosion of Surgical Instruments
are provided for information only and are not considered
3
2.2 MPIF Standards:
standard.
MPIF Standard 35 Materials Standards for Metal Injection
1.5 This standard does not purport to address all of the
Molded Parts
safety concerns, if any, associated with its use. It is the
MPIF Standard 50 Method for Preparing and Evaluating
responsibility of the user of this standard to establish appro-
Metal Injection Molded (MIM) Debound and Sintered/
priate safety and health practices and determine the applica-
Heat Treated Tension Test Specimens
bility of regulatory limitations prior to use.
MPIF Standard 51 Method for Determination of Microin-
dentation Hardness of Powder Metallurgy Materials
1 2
This specification is under the jurisdiction ofASTM Committee B09 on Metal For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Powders and Metal Powder Products and is the direct responsibility of B09.11 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Near Full Density Powder Metallurgy Materials. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2015. Published November 2015. Originally the ASTM website.
ɛ1
3
approved in 1997. Last previous edition approved in 2010 as B883 – 10 . DOI: Available from Metal Powder Industries Federation (MPIF), 105 College Rd.
10.1520/B0883-15. East, Princeton, NJ 08540-6692, http://www.mpif.org.
*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 ----------------------
B883−15
MPIF Standard 59 Method for Determination of Charpy Analysis of the element carbon shall be determined in accor-
Impact Energy of Unnotched Metal Injection Molded dance with Test Methods E1019, via optical emission
(MIM) Test Specimens spectroscopy, or other method agreed upon between the pur-
MP
...

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.
´1
Designation: B883 − 10 B883 − 15
Standard Specification for
1
Metal Injection MoldingMolded (MIM) Ferrous Materials
This standard is issued under the fixed designation B883; 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
ε NOTE—Footnotes were editorially added to Tables 2–6 in May 2013.
1. Scope Scope*
1.1 This specification covers ferrous metal injection molded materials fabricated by mixing elemental or pre-alloyed metal
powders with binders, injecting into a mold, debinding, and sintering, with or without subsequent heat treatment.
1.2 This specification covers the following injection molded materials.
1.2.1 Compositions:
1.2.1.1 MIM-2200, low-alloy steel
1.2.1.2 MIM-2700, low-alloy steel
1.2.1.3 MIM-4605, low-alloy steel
1.2.1.4 MIM-4140, low-alloy steel
1.2.1.5 MIM-316L, austenitic stainless steel
1.2.1.6 MIM-17-4 PH, precipitation hardening stainless steel
1.2.1.7 MIM-420, ferritic stainless steel
1.2.1.8 MIM-430L, ferritic stainless steel
1.2.1.9 MIM-Cu, copper
1.3 Chemical composition limits are specified in Table 1.
1.4 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 or in separate tables are mathematical conversions to SI units that are provided for
information only and are not considered standard.
1.5 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
B243 Terminology of Powder Metallurgy
B311 Test Method for Density of Powder Metallurgy (PM) Materials Containing Less Than Two Percent Porosity
B933 Test Method for Microindentation Hardness of Powder Metallurgy (PM) Materials
B962 Test Methods for Density of Compacted or Sintered Powder Metallurgy (PM) Products Using Archimedes’ Principle
E8 Test Methods for Tension Testing of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E228 Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer
E350 Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought
Iron
E415 Test Method for Analysis of Carbon and Low-Alloy Steel by Spark Atomic Emission Spectrometry
1
This specification is under the jurisdiction of ASTM Committee B09 on Metal Powders and Metal Powder Products and is the direct responsibility of B09.11 on Near
Full Density Powder Metallurgy Materials.
Current edition approved Dec. 1, 2010Oct. 1, 2015. Published March 2011November 2015. Originally approved in 1997. Last previous edition approved in 2010 as
ɛ1
B883 – 10.B883 – 10 . DOI: 10.1520/B0883-10E01.10.1520/B0883-15.
2
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 ----------------------
B883 − 15
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
E1461 Test Method for Thermal Diffusivity by the Flash Method
E1621 Guide for Elemental Analysis by Wavelength Dispersive X-Ray Fluorescence Spectrometry
F1089 Test Method for Corrosion of Surgical Instruments
3
2.2 MPIF Standards:
MPIF Standard 35 MaterialMaterials Standards for Metal Injection Molded Parts
MPIF Standard 50 Method for Preparing and Evaluating Metal Injection Molded (MIM) Debound and Sintered/Heat Treated
Tension Test Specimens
MPIF Standard 51 Method for Determination of Microindentation Hardness
...

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