ASTM A956-06
Standard Test Method for Leeb Hardness Testing of Steel Products

Standard No.

ASTM A956-06

Release Date

2006

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM A956-12

Latest

ASTM A956/A956M-22

Scope

Hardness of a material is a poorly defined term that may have many meanings depending on the type of test performed and the expectations of the person involved. The Leeb hardness test is of the dynamic or rebound type, which primarily depends both on the plastic and on the elastic properties of the material being tested. The results obtained are indicative of the strength and dependent on the heat treatment of the material tested.

The Leeb hardness test is a superficial determination only measuring the condition of the surface contacted. The results generated at that location do not represent the part at any other surface location and yield no information about the material at subsurface locations.

1.1 This test method covers the determination of the Leeb hardness of steel, cast steel, and cast iron (Part A), including the methods for the verification of Leeb hardness testing instruments (Part B), and the calibration of standardized test blocks (Part C).

Note 1

The original title of this standard was "Standard Test Method for Equotip Hardness Testing of Steel Products."

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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.

ASTM A956-06 Referenced Document

• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM A956-06 history

• 2022 ASTM A956/A956M-22 Standard Test Method for Leeb Hardness Testing of Steel Products
• 2017 ASTM A956/A956M-17a Standard Test Method for Leeb Hardness Testing of Steel Products
• 2017 ASTM A956/A956M-17 Standard Test Method for Leeb Hardness Testing of Steel Products
• 2012 ASTM A956-12 Standard Test Method for Leeb Hardness Testing of Steel Products
• 2006 ASTM A956-06 Standard Test Method for Leeb Hardness Testing of Steel Products
• 2002 ASTM A956-02 Standard Test Method for Leeb Hardness Testing of Steel Products
• 2000 ASTM A956-00 Standard Test Method for Leeb Hardness Testing of Steel Products