ASTM E10-07e1
(Test Method)Standard Test Method for Brinell Hardness of Metallic Materials
Standard Test Method for Brinell Hardness of Metallic Materials
SCOPE
1.1 This test method (Test Method A) covers the determination of the Brinell hardness of metallic materials, including methods for the verification of Brinell hardness testing machines (Test Method B) and the calibration of standardized hardness test blocks (Test Method C).
1.2 The values stated in SI units are to be regarded as the standard. Note 1 - In common terminology, the equivalent force in kgf is substituted for N.
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.
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
American Association State Highway
e1
Designation:E10–07 and Transportation Officials Standard
AASHTO No.: T70–86
Standard Test Method for
1
Brinell Hardness of Metallic Materials
ThisstandardisissuedunderthefixeddesignationE10;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1
e NOTE—The layout of Table 2 was editorially corrected in March 2007.
1. Scope* 3. Terminology
1.1 This test method (Test Method A) covers the determi- 3.1 Definitions of Terms Specific to This Standard:
nation of the Brinell hardness of metallic materials, including 3.1.1 Brinell hardness number—anumber,whichispropor-
methods for the verification of Brinell hardness testing ma- tional to the quotient obtained by dividing the test force by the
chines (Test Method B) and the calibration of standardized curved surface area of the indentation which is assumed to be
hardness test blocks (Test Method C). spherical and of the diameter of the ball.
1.2 The values stated in SI units are to be regarded as the
2F
HBW 50.102 3 ~SeeTable1! (1)
standard.
2 2
pD~D 2 =D 2d !
NOTE 1—In common terminology, the equivalent force in kgf is
where:
substituted for N.
D = diameter of the ball, mm,
1.3 This standard does not purport to address all of the
F = test force, N, and
safety concerns, if any, associated with its use. It is the
d = mean diameter of the indentation, mm.
responsibility of the user of this standard to establish appro-
The Brinell hardness is denoted by the symbol: HBW.
priate safety and health practices and determine the applica-
3.1.1.1 Discussion—In former standards, a steel ball was
bility of regulatory limitations prior to use.
allowed for hardness values below 450. In cases when a steel
ballwasused,theBrinellhardnesswasdenotedbyHBorHBS.
2. Referenced Documents
3.1.1.2 Discussion—The symbol HBW is preceded by the
2
2.1 ASTM Standards:
hardness value. When conditions other than those specified in
E4 Practices for Force Verification of Testing Machines
11.1.2 are used, the hardness value is supplemented by an
E29 Practice for Using Significant Digits in Test Data to
index indicating the test conditions in the order:
Determine Conformance with Specifications
(1) Diameter of the ball, in mm,
E74 Practice of Calibration of Force-Measuring Instru-
(2) A value representing the test force in kg/f (see Table 3), and,
ments for Verifying the Force Indication of Testing Ma-
(3) Duration of loading, in s.
chines
Examples:
E140 HardnessConversionTablesforMetalsRelationship
350 HBW 5/750 = Brinell hardness of 350 determined with a ball of 5-mm
Among Brinell Hardness, Vickers Hardness, Rockwell
diameter and with a test force of 7.355 kN (750 kgf) applied for 10 to 15 s.
600 HBW 1/30/20 = Brinell hardness of 600 determined with a ball of 1-mm
Hardness, Superficial Hardness, Knoop Hardness, and
diameter and with a test force of 294.2 N (30 kgf) applied for 20 s.
Scleroscope Hardness
3.1.1.3 Discussion—Brinellhardnessnumbersvarywiththe
test force used; however, test results will generally be in
agreement when the ratio of the test force to the square of the
1
This test method is under the jurisdiction of ASTM Committee E28 on
ball diameter is held constant (see Table 3).
Mechanical Testing and is the direct responsibility of Subcommittee E28.06 on
3.1.1.4 Discussion—Table 2 lists the Brinell hardness num-
Indentation Hardness Testing.
bers corresponding to various diameters of indentations for
Current edition approved Jan. 1, 2007. Published January 2007. Originally
e1
approved in 1924. Last previous edition approved in 2001 as E10–01 .
29.4kN(3000kgf),14.7kN(1500kgf),and4.90kN(500kgf)
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
test forces making it unnecessary to calculate for each test the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
value of the Brinell hardness number by the above equation in
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Table1whentheseforcesareusedwitha10-mmdiameterball.
*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 ----------------------
e1
E10–07
TABLE 1 Symbols and Designations
about metallic materials. This information may correlate to
tensile strength, wear resistance, ductility, or other physical
1 1
NOTE 1— Constant 5 5 5 0.102
characteristics of metallic materials, and may be useful in
g 9.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.