Electromechanical Tensile Testing Machine upper bending lower
tensile test ASTM E8M 200kN ETM205D
The ETM type D Series addresses the needs of standardized and
routine testing, providing the user high quality at the most
affordable price. The dual column testing systems with rugged
structure are suited for tension and/or compression applications
with load range requirement. They are typically used for quality
control and production testing.
Tension, bending, compression, tearing, shearing for Metals,
building components, large fasteners, composites, wood products
1/500000 resolution, fully-closed control of Stress control, Strain
control and Displacement control and stepless in the full
Pre-loaded ball screws driven by imported AC servo motor
USA Brand load cell for force measurement, Japanese photoelectrical
encoder for displacement measurement and USA or PRC superior
extensometer for extension measurement
- Full computer control with professional test software
- Equipped with portable control keypad with functions of Up, Down,
Stop, Jog up, Jog down, and test start
- Security Protection
- Crosshead position limiter; Emergency stop switch; electronics
protection once overload, over-current, over-voltage, and
Standards: ASTM E8
Standard Test Methods for Tension Testing of Metallic Materials
1.1 These test methods cover the tension testing of metallic
materials in any form at room temperature, specifically, the
methods of determination of yield strength, yield point
elongation,tensile strength, elongation, and reduction of area.
NOTE 1—These test methods are the metric companion of Test Methods
E 8. Committee E-28 was granted an exception in 1997 by the
Committee on Standards to maintain E8 and E8M as separate companion
standards rather than combining standards as recommended by the
Form and Style manual.
NOTE 2—These metric test methods are essentially the same as those
in Test Methods E 8, and are compatible in technical content except
that gage lengths are required to be 5D for most round specimens
rather than 4D as specified in Test Methods E 8. Test specimens
made from powder metallurgy (P/M) materials are exempt from this
requirement by industrywide agreement to keep the pressing of the
material to a specific projected area and density.
NOTE 3—Exceptions to the provisions of these test methods may need
to be made in individual specifications or test methods for a
particular material. For examples, see Test Methods and Definitions
A 370 and Test Methods B 557M.
NOTE 4—Room temperature shall be considered to be 10 to 38°C unless
1.2 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.
2. Referenced Documents
A 356/A356M Specification for Steel Castings, Carbon, Low Alloy,
and Stainless Steel, Heavy-Walled for Steam Turbines A 370 Test
Methods and Definitions for Mechanical Testing of Steel Products
B 557M Test Methods of Tension TestingWrought and Cast Aluminum-
and Magnesium-Alloy Products [Metric]
E 4 Practices for Force Verification of Testing Machines
E 6 Terminology Relating to Methods of Mechanical Testing
E 8 Test Methods for Tension Testing of Metallic Materials
E 29 Practice for Using Significant Digits in Test Data to
Determine Conformance with Specifications
E 83 Practice for Verification and Classification of Extensometers
E 345 Test Methods of Tension Testing of Metallic Foil
E 691 Practice for Conducting an Interlaboratory Study to Determine
the Precision of a Test Method
E 1012 Practice for Verification of Specimen Alignment Under
In reporting values of elongation, give both the original gage
length and the percentage increase. If any device other than an
extensometer is placed in contact with the specimen’s reduced
section during the test, this shall also be noted.
When the specified elongation is greater than 3 %, fit ends of the
fractured specimen together carefully and measure the distance
between the gage marks to the nearest 0.25 mm for gage lengths of
50 mm and under, and to at least the nearest 0.5 % of the gage
length for gage lengths over 50 mm. A percentage scale reading to
0.5 % of the gage length may be used.
When the specified elongation is 3 % or less, determine the
elongation of the specimen using the following procedure, except
that the procedure given in 7.11.2 may be used instead when the
measured elongation is greater than 3 %.
Prior to testing, measure the original gage length of the specimen
to the nearest 0.05 mm.
Remove partly torn fragments that will interfere with fitting
together the ends of the fractured specimen or with making the
Fit the fractured ends together with matched surfaces and apply a
force along the axis of the specimen sufficient to close the
fractured ends together. If desired, this force may then be removed
carefully, provided the specimen remains intact.
The use of a force of approximately 15 MPa has been found to give
satisfactory results on test specimens of aluminum alloy.
Measure the final gage length to the nearest 0.05 mm and report the
elongation to the nearest 0.2 %.
Elongation measured per paragraph may be affected by location of
the fracture, relative to the marked gage length. If any part of
the fracture occurs outside the gage marks or is located less than
25 % of the elongated gage length from either gage mark, the
elongation value obtained using that pair of gage marks may be
abnormally low and non-representative of the material. If such an
elongation measure is obtained in acceptance testing involving only
a minimum requirement and meets the requirement, no further testing
need be done. Otherwise, discard the test and retest the material.
Elongation at fracture is defined as the elongation measured just
prior to the sudden decrease in force associated with fracture. For
many ductile materials not exhibiting a sudden decrease in force,
the elongation at fracture can be taken as the strain measured just
prior to when the force falls below 10 % of the maximum force
encountered during the test.
Elongation at fracture shall include elastic and plastic elongation
and may be determined with autographic or automated methods using
extensometers verified over the strain range of interest (see 5.4).
Use a class B2 or better extensometer for materials having less
than 5 % elongation, a class C or better extensometer for materials
having elongation greater than or equal to 5 % but less than 50 %,
and a class D or better extensometer for materials having 50 % or
greater elongation. In all cases, the extensometer gage length
shall be the nominal gage length required for the specimen being
tested.Due to the lack of precision in fitting fractured ends
together,the elongation after fracture using the manual methods of
the preceding paragraphs may differ from the elongation at fracture
determined with extensometers.
|Calibration standard||ISO 7500, Class 1 / Class 0.5|
|Force range||0.2% ~ 100%FS / 0.4 ~ 100%FS|
|Force accuracy||±1.0% / ±0.5% of reading|
|Position accuracy||±0.50% of reading|
|Position resolution (μm)||0.025|
|Crosshead speed (mm/min)||0.001 ~ 250|
|Crosshead speed accuracy||within ±1% / ±0.5% of set speed|
|Power requirement||Three-phase, 380±10% VAC, 50/60Hz|