Abstract

This standard provides comprehensive details for the design, processing, and specifications of powder metallurgy (PM) steel gears that need to be agreed upon between the PM gear supplier and the purchaser. These include: definition of terms, gear tooth geometry considerations, inspection, PM gear materials, drawing specifications, heat treatment, and mechanical testing. 

Foreword

The AGMA Powder Metallurgy Gearing Committee was organized in 1993 with the support of the Metal Powder Industries Federation (MPIF). The work of the Committee is directed toward merging the technology of powder metallurgy (PM) gearing with the technologies of the more traditional types of gearing.

The Committee, responding to the widely recognized need for improving the technical communication between powder metallurgy gear purchasers and manufacturers, selected as its first project this specification standard. The primary objective of this standard is to increase understanding by the gear purchaser of the responsibility to thoroughly define the gear requirements to the gear manufacturer.

ANSI/AGMA 6008-A98 was approved by the AGMA membership in November 1997. It was approved as an American National Standard on September 10, 1998.

ANSI/AGMA 6008-B24 replaces ANSI/AGMA 6008-A98. It is a major update which includes more details on how to specify, inspect, certify and test PM steel gears. ASTM B243-19 definitions and terms were added.

In June 2019, the AGMA Technical Division Executive Committee (TDEC) approved the start of the ANSI/AGMA 6008-B24 project, which was written by the AGMA Powder Metallurgy Committee. It was approved by the AGMA Board of Directors in March 2024. It was approved as an American National Standard on April 2, 2024.

Scope

This standard describes the specification data required to adequately inform the manufacturer of powder metallurgy (PM) gears about the gear design features desired by the purchaser. It also describes some of the related industry practices which commonly apply unless replaced by written agreement between manufacturer and purchaser. 

Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.

• AGMA 915-2, Inspection Practices – Part 2: Double Flank Radial Composite Measurements
• AGMA 944, Mechanisms of Powder Metal, PM, Gear Failures
• AGMA ISO 10064-1, Code 0f Inspection Practice – Part 1: Measurement of Cylindrical Gear Tooth Flanks
• ANSI/AGMA 1012, Gear Nomenclature, Definition of Terms with Symbols
• ANSI/AGMA 2002, Tooth Thickness Specification and Backlash Measurement of Cylindrical Involute Gearing
• ANSI/AGMA/ISO 1328-1, Cylindrical Gears – ISO System of Flank Tolerance Classification – Part 1: Definitions and Allowable Values of Deviations Relevant to Flanks of Gear Teeth
• ANSI/AGMA ISO 1328-2, Cylindrical Gears – ISO System of Flank Tolerance Classification – Part 2: Values of Double Flank Radial Composite Deviations
• ANSI/ASME Y14.5M, Dimensioning and Tolerancing
• ASTM B243, Standard Terminology of Powder Metallurgy
• MPIF Standard 35-PF, Materials Standards for PF Steel Parts
• MPIF Standard 35-SP, Materials Standards for PM Structural Parts 
• MPIF Standard Test Method 42: Method for Determination of Density of Compacted or Sintered Powder Metallurgy (PM) Products Materials 
• MPIF Standard Test Method 43: Method for Determination of the Rockwell Apparent Hardness of Powder Metallurgy (PM) Products 
• Powder Metallurgy Design Manual, Metal Powder Industries Federation (MPIF), 1998.

Pages: 77

ISBN: 978-1-64353-167-0