ASTM E151-64 (1981)

Recommended Practice for Tension Tests of Metallic Materials at Elevated Temperatures With Rapid Heating and Conventional or Rapid Strain Rates (Withdrawn 1984)

General Information

• Status: Withdrawn
• Technical Committee: E28 - Mechanical Testing

Standards Content (Sample)

~~r~ Designation: E 151 - 64 (Reapproved 1981)
Standard Practice for
TENSION TESTS OF METALLIC MATERIALS 'AT
ELEVATED TEMPERATURES WITH RAPID
HEATING AND CONVENTIONAL OR RAPID
1
STRAIN RATES
., Tin~ ~•.anda.rd is is.~ucd under lhc ll xcd Jc~G!Ialiun E 151: 1h.c nurnhcr •mmcJmlcly li•llow111g I he: dc:~lj;llilll~•u indk:.lc:., I he
yea r ul u ngmal :u.lnpllt~n ur. 1111hc co+'c nl rcvi,Sitlll. ll~c year ol 1.1M rcvlslun. i\ n umhcr 111 parcnlhc~c~ indic:;uc' I he year uf la•l
rcapprtl\'<11. A supcr~cnpl c:p>Jin•• (<) IDUI COIIC' un cdunnul chaugc 'uu:c I he laM rcv1s1 un nr rcapprnv:.l.
1. Scope
the testing machine should lake into account
the accurate measurement of loads under the
1.1 This recommended practice covers pro·
dynamic conditions existing for tests requir­
ccdurcs, and equipment requi rements for
ing rapid strain rates.
conducting tension tests on metallic materials
2.3 Precaution!. sha ll be taken to assure
under conditions of(/) rapid rates or heating
that the load on the specimen is applied as
and normal rates of strain ing, and (.?) rapid
nearly a xial as possible. It is dillicu llt to ob­
rates of heating and strainin~ .
tain axial alignment. Nonaxiality shall not ex­
1.2 This recommended practice covers ten­
ceed that which will produce a difference of 15
sion tests using faster hea ting rates or faster
percent in clast ic strain readings on opposite
heat ing rates in combination with faster
or the specimen when an cxtensomctcr
sides
struinmg rates than those covered by ASTM
is positioned to measure the maximum clfcct
Recommended Practice E 21, for Elevated
of nonaxiality as described in 2.4. Brilllc· ma­
Temperature Tension Tests of Met<~llic Ma­
2 teria ls may require considerably better align­
terials.
ment than that which would produce a 15
I.J Preferred cond itions of testing arc rec­
percent variation in clastic strain.
ommended fu r the purpose or promoting di­
2.4 Eccentricity of loading can often be
rectly comparable data from laboratories
detected by elastic extension measurements
conducting the tests.
taken at room temperature. Apparatus pro­
NnTt: 1-Tbe values stated in inch-pound units
vided with extensometers affording separate
are to be regarded as the standard.
measurements on opposite sides will reveal
unsatisfactory alignment in respect to one
2. ·rension Tesl Apparatus
plane when unequal strain is shown by the
2.1 The type of testing machine lO he used
readings on opposite sides. Repeating th b
for the louding of the specimen is not speci­
procedure with the points of attachment to
Jied but should be made part of the report of
tht: specimen al 90 dcg to the first eccentric­
the lest results. The accuracy or the testing
ity test will help define the extent and orien­
machine should be within the permissible
tation of any eccentricity. Such eccentricity
va riations specified in ASTM Methods E 4,
Verification of Testing Machines.'
1
2.2 The testing machine must be capable
T his prat:uce is under 1he JUrisdicliun uf 1he i\STM·
i\SME Jmnl Commiuee on En·ecl ofTe mpentlurc un l'rup·
of smoothly a pplying the load to the speci­
erlies of Metals.
men at the strain rates specified in Section 7.
Current etli liun ciTcclivc Aug. 3 J. 1%4. Originullv is-
sued 1959. Rc nl<~ccs E IS I 61 T. .
The speed of response of the load indicator
' A nnual /1110k of ASTM Stantlurtlr, Pa rt 10.
sha ll be higher than the max imum rate of
• Annual Hook td' ASTM ,\'lundtml.r, t•arls 1<1. 14. ,l :!.
load increase in the test. The calibration of 35. und 4 1.

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E 151
mca~urcments shall be taken periodically at diameter specimen consistent with the re­
room temperature to check axial alignment. quirements of 4.1 shall he used except that
Devices which measure extension on only the dtameter need not he larger than O.SOO
one side of the specimen will not detect ec­ in. (12.7 mm).
ccntrk loading. 4.4 The minimum diameter of round spec­
imens or the minimum width of strip speci­
3. llcllting Appuratus
mens shu11 be at the center uf the gage
3.1 The apparatus for and method of heat­ length. A tapcr facilitates control of the test.
ing the specimen arc not specified. Present For such tapered specimens the variation at
practice nwinly uses: the ends shu11 be not more than -1-ll.S per­
J.l.l The resistance of the specimen gage cent of the minimum diameter or width ul' the
length to the passage or lin electric current,
specimen. In those cases where a t 3.1.2 Resistance heating supplemented by desirable, the variation in diameter of the
~radiant heating, gage length of round specimens or the width
3.1 .3 Radiant heating, and
of the gage length of strip specimens shull not
3. 1.4 Induction heating to maintain the be more than :t:O.OOI in. (0.025 mm).
specimen gage length at temperature. 4.5 The ratio of guge length to diumeter
3.1.5 The apparatus must be suitable for
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