ASTM E604-83

Standard Test Method for Dynamic Tear Testing of Metallic Materials

General Information

• Status: Historical
• Publication Date: 31-Dec-1982
• Technical Committee: E28 - Mechanical Testing
• Drafting Committee: E28.07 - Impact Testing

Standards Content (Sample)

q~f~ oes:gnateo~= E so4- sa
Reprinted from the Annual Book of ASTM Standards, Copyright ASTM
If not listed in the current combined index, will appear in the next edition.
Standard Test Method for
1
DYNAMIC TEAR TESTING OF METALLIC MATERIALS
This standard is issued under the fixed designation E 604; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year oflast revision. A number in parentheses indicates the year oflast
reapproval. A superscript epsilon(<) indicates an editorial change since the last revision or reapproval.
1. Scope is of major interest. In the test method, a suf­
ficiently long fracture path is provided so that
1.1 This test method covers the dynamic tear
the results serve as a measure of this property.
(DT) test using specimens that are ~·i6 in. to %
4.2 Fracture surfaces of nonaustenitic steels
in. (5 mm to 16 mm) inclusive in thickness.
tested in their temperature transition region have
1.2 This test method is applicable to mate­
areas that appear bright and areas that appear
rials with a minimum thickness of ¥!6 in. (5
dull. The bright, faceted appearing areas are
mm).
termed "cleavage" fracture, and the dull appear­
1.3 The pressed-knife procedure described
ing areas are termed "shear" fracture after their
for sharpening the notch tip generally limits
respective mode of fracture on a micro scale.
this method to materials with a hardness level
4.3 This test method can serve the following
less than 36 HRC.
purposes:
NOTE I~ The designation 36 HRC is a Rockwell
4.3.1 In research and development, to eval­
hardness number of 36 on Rockwell C scale as de­
fined in Methods E 18. uate the effects of metallurgical variables such
as composition, processing, or heat treatment,
2. Applicable Documents
or of fabricating operations such as forming
and welding on the dynamic tear fracture re­
2.1 ASTM Standards:
sistance of new or existing materials.
B 221 Specification for Aluminum-Alloy Ex­
truded Bars, Rods, Wire, Shapes, and 4.3.2 In service evaluation, to establish the
2
suitability of a material for a specific applica­
Tubes
E 18 Test Methods for Rockwell Hardness tion only where a correlation between DT en­
and Rockwell Superficial Hardness of Me­ ergy and service performance has been estab­
3
lished.4
tallic Materials
4.3.3 For information, specifications of ac­
E 399 Method of Test for Plane-Strain Frac­
3
ture Toughness of Metallic Materials ceptance, and manufacturing quality control
when a minimum DT energy is requested. De­
3. Summary of Method
tailed discussion of the basis for determining
3.1 The DT test involves a single-edge such minimum values in a particular case is
notched beam that is impact loaded in three­ beyond the scope of this test method.
point bending, and the total energy loss during
separation is recorded.
3.2 The DT specimens are fractured with
1
This test method is under the jurisdiction of ASTM C~m­
pendulum or drop-weight machines.
mittee E-24 on Fracture Testing and is the direct responsibility
of Subcommittee E24.03 on Alternative Fracture Test Methods.
4. Significance and Use
Current edition approved March 25, 1983. Published July
1983. Originally published as a proposed test method in Novem­
4.1 The DT energy value is a measure of
ber 1975. Last previous edition E 604 -80.
2
resistance to rapid progressive fracturing. In a
1983 Annual Book of ASTM Standards, Vol 02.02.
3
1983 Annual Book of ASTM Standards, Vol 03.01.
number of applications, the enhanced resist­
•see Pellini, W. S., "Analytical Design Procedures for Metals
ance that may develop during about one plate
of Elastic-Plastic and Plastic Fracture Properties," Welding Re­
thickness of crack extension from a sharp notch search Council Bulletin 186, August 1973.

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E604
5. Description of Terms to an error in the weight of the pendulum or
th~ dropping weight, or due to an error in drop
5.1 Dynamic Tear (DT) Energy-the total en­
hetght, shall not exceed 1 %. Windage and
ergy required to fracture DT specimens tested in
frictio~ may be compe~sate~ for by increasing
accordance with the provisions of this test
the hetght of the drop, m whtch case the hei!!ht
method.
may exceed the nominal value by not o~er
NoT~ 2-With pendulum-type machines, the DT
2.0%.
energy IS the difference between the initial and the
6. 1.3 The specimen anvil and the striker tup
final potential energies of the pendulum or pendu­
lums.
shall be of steel hardened to a minimum hard­
NoTE 3-With drop-weight machines, the DT en­
ness value of 48 HRC and shall conform to the
ergy is the difference between the initial potential
dimensions presented in Fig. I. Clearance be­
energy of the hammer and the final energy of the
tween the sides of the hammer and anvil shall
hammer as determined by a calibrated energy mea­
surement system. not be less
...