ASTM E6-02

Standard Terminology Relating to Methods of Mechanical Testing

SCOPE
1.1 This terminology covers the principal terms relating to methods of mechanical testing of solids. The general definitions are restricted and interpreted, when necessary, to make them particularly applicable and practicable for use in standards requiring or relating to mechanical tests. These definitions are published to encourage uniformity of terminology in product specifications.
1.2 Terms relating to fatigue and fracture testing are defined in Terminology E 1823.

General Information

• Status: Historical
• Publication Date: 09-Jun-2002
• ICS: 01.040.19 - Testing (Vocabularies)
• ICS: 19.060 - Mechanical testing
• Technical Committee: E28 - Mechanical Testing
• Drafting Committee: E28.91 - Terminology

Relations

• Replaced By: ASTM E6-02a - Standard Terminology Relating to Methods of Mechanical Testing
• Effective Date: 10-Aug-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
Designation:E6–02
Standard Terminology Relating to
1
Methods of Mechanical Testing
ThisstandardisissuedunderthefixeddesignationE6;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (ε) 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. Scope
Term Section
angle of bend D
1.1 This terminology covers the principal terms relating to
angular strain see strain
methods of mechanical testing of solids. The general defini-
axial strain see strain
bearing area F
tions are restricted and interpreted, when necessary, to make
bearing load B
them particularly applicable and practicable for use in stan-
bearing strain F
dards requiring or relating to mechanical tests. These defini-
bearing strength F
bearing stress F
tions are published to encourage uniformity of terminology in
bearing yield strength F
product specifications.
bend test D
1.2 Termsrelatingtofatigueandfracturetestingaredefined break elongation see maximum elongation
breaking load B
in Terminology E1823.
Brinell hardness number C
Brinell hardness test C
2. Referenced Documents
chord modulus see modulus of elasticity
compressive strength B
2.1 ASTM Standards:
compressive stress see stress
2
E796 Test Method for Ductility Testing of Metallic Foil
compressometer see extensometer
E1823 Terminology Relating to Fatigue and Fracture Test-
constraint A
2
creep E
ing
creep recovery E
creep rupture strength E
3. Index of Terms
creep strength E
discontinuous yielding B
3.1 The definitions of the following terms, which are listed
ductility A
alphabetically, appear in the indicated sections of 4.1.
edge distance F
edge distance ratio F
elastic constants see modulus of elasticity and Poisson’s
1
This terminology is under the jurisdiction of ASTM Committee E-28 on ratio
Mechanical Testing and is the direct responsibility of Subcommittee E28.91 on elastic limit A
elastic true strain A
Editorial and Terminology except where designated otherwise. A subcommittee
elongation B
designation in parentheses following a definition indicates the subcommittee with
engineering strain see strain
responsibility for that definition.
engineering stress see stress
Current edition approved June 10, 2002. Published August 2002. Originally
ε2
extensometer B
published asE6–23T. Last previous editionE6–99 .
2 fatigue ductility B
Annual Book of ASTM Standards, Vol 03.01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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E6–02
fatigue ductility exponent B
fatigue life B
fracture ductility A
fracture strength A
fracture stress see stress
free bend D
force A
gage length A
guided bend D
hardness C
indentation hardness C
initial recovery E
initial strain E
initial stress E
Knoop hardness number C
Knoop hardness test C
linear strain see strain
linear (tensile or compressive) strain A
lower yield strength B
macrostrain see strain
malleability see ductility
mandrel (in bend testing) D
maximum elongation B
mechanical hysteresis A
mechanical properties A
mechanical testing A
microstrain see strain
modulus of elasticity A
modulus of rigidity see modulus of elasticity
modulus of rupture in bending D
modulus of rupture in torsion B
necking B
nominal stress see stress
normal stress see stress
physical properties see mechanical properties
pin see mandrel (in bend testing)
plastic true strain A
plunger see mandrel (in bend testing)
principal stress see stress
1

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E6–02
load, are usually taken as the initial and final reference.
Poisson’s ratio A
proportional limit A
force [F], n—in mechanical testing, a vector quantity of
radius of bend D
rate of creep E
fundamental nature characterized by a magnitude, a direc-
reduction of area B
tion, a sense, and a discrete point of application, that acts
relaxation rate E
externally upon a test object and creates stresses in it.
relaxed stress E
remaining stress E
DISCUSSION—Force is a derived unit of the SI system. Units of force
residual strain see strain
residual stress see stress in the SI system are newtons (N).
Rockwell hardness number, HR C
DISCUSSION—Whereapplicable,thenounforceispreferredtoloadin
Rockwell hardness test C
terminology for mechanical testing.
Rockwell superficial hardness num- see Rockwell hardness number
ber
fracture ductility, ε , n—the true plastic strain at fracture.
f
Rockwell superficial hardness test C
–2
fracture strength, S [FL ], n—the normal stress at the
semi-guided bend D f
set A
beginning of fracture. Fracture strength is calculated from
...