Tag: Brinell hardness

New ASTM E10 2012 Edition on Standard Test Method for Brinell Hardness of Metallic Materials

ASTM International has released the new ASTM E10-12, “Standard Test Method for Brinell Hardness of Metallic Materials,” and it’s available now from Document Center Inc.  The test is an indentation hardness test that can provide useful information about metallic materials.  ASTM E10 provides the requirements for a Brinell testing machine and the procedures for performing Brinell hardness tests.

This information may correlate to tensile strength, wear resistance, ductility, or other physical characteristics of metallic materials, and may be useful in quality control and selection of materials.

Brinell hardness tests are considered satisfactory for acceptance testing of commercial shipments, and have been used extensively in industry for this purpose.  However, brinell hardness testing at a specific location on a part may not represent the physical characteristics of the whole part or end product.

ASTM International develops thousands of test methods for a wide range of materials and processes.  All are available from Document Center Inc. in paper or pdf format at our website, www.document-center.com.  Or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  ASTM standards can be purchased in current or obsolete editions.  Just  ask our expert staff for assistance with the documents you need.

ASTM A370, Standard Test Methods and Definitions for Mechanical Testing of Steel Products – New 2011 Edition available

ASTM-A370 2011 Edition titled “Standard Test Methods and Definitions for Mechanical Testing of Steel Products” has just been released.  These test methods cover procedures and definitions for the mechanical testing of steels, stainless steels, and related alloys.  The new 2011 edition replaces the previous 2010 issue.

ASTM-A370 test methods center on Ductile vs. Brittle Behavior.  Body-centered-cubic or ferritic alloys exhibit a significant transition in behavior when impact tested over a range of temperatures. At temperatures above transition, impact specimens fracture by a ductile (usually microvoid coalescence) mechanism, absorbing relatively large amounts of energy. At lower temperatures, they fracture in a brittle (usually cleavage) manner absorbing appreciably less energy. Within the transition range, the fracture will generally be a mixture of areas of ductile fracture and brittle fracture.

The temperature range of the transition from one type of behavior to the other varies according to the material being tested. This transition behavior may be defined in various ways for specification purposes.

The specification may require a minimum test result for absorbed energy, fracture appearance, lateral expansion, or a combination thereof, at a specified test temperature.

The specification may require the determination of the transition temperature at which either the absorbed energy or fracture appearance attains a specified level when testing is performed over a range of temperatures. Alternatively the specification may require the determination of the fracture appearance transition temperature (FATTn) as the temperature at which the required minimum percentage of shear fracture (n) is obtained.

This ASTM Standard, and all ASTM documents, may be purchased from Document Center Inc. via our website, www.document-center.com.  Or you may prefer to contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  Our expert staff is here to help you.