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Mechanical Testing Services

Tensile testing procedures at the CMS facility are preformed in accordance with ASTM standard specifciations, such as:

  • ASTM E-8 (Standard Test Methods for Tension Testing of Metallic Materials)

  • ASTM A-370 (Standard Test Methods and Definitions for Mechanical Testing of Steel Products)

  • ASTM B-557 (Standard Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products)

  • ASTM F-606 (Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets)

Several different types of hardness testing can be performed here at CMS. Each has a specific advantage for testing which can be dependent on the type of material and/or the configuration of your part.

  • Vickers Hardness per ASTM E92

  • Knoop Hardness per ASTM E384

  • Rockwell Hardness per ASTM E8

  • Brinell Hardness per ASTM E10

  • Leeb Hardness per ASTM A956

Impact testing is be carried out as defined by the latest revision of ASTM E23.  CVN is short for Charpy V-notch. The V-notch is the most common type of notch and is listed as type A per ASTM E23. The V-notch is the most accepted type of notch and should be used unless otherwise noted or instructed by client. CMS uses a SATEC model impact tester, which uses a free swing pendulum which strikes the specimen. This model has a 300 foot pounds of force maximum measurement. This machine is calibrated year with direct verification and indirectly verified with NIST. The NIST indirect verification is in accordance with ASTM E 23, and requires two set of CVN’s which are supplied by NIST to be test for High and Low range verification. Copies of certifications are available upon request.


Hydrogen Embrittlement Testing is preformed in accordance with ASTM-F-519. CMS does sell these specialized test bars in a set of five. Typical processing involves plating 4 of the sample, the last sample is non-plated but still subjected to the relief process. Typical relief process is 350F for 3 hours. The non-plated sample is tensile tested for ultimate strength. The four plated samples are held at 75% of the strength recorded on the tensile tested sample. The samples are held for 200 hours in order to certify relief process has diffused hydrogen from structure. 

Bend testing shall be performed in accordance with ASTM E290, unless otherwise specified by client. This procedure may be deviated from at the client's request. In this event the procedure or method that was used shall be notedon the Lab worksheet.

Various devices are suitable for bending. CMS uses Arrangement A and C of ASTM E290.

Full Size Tension Testing Bolts—This testing process is a straight axial tensile testing of the bolt without the use of a controlled testing section (Machined location). The bolt being tested is pulled in the as used condition. To meet the requirements of this test, the bolt shall support a load prior to fracture not less than the minimum tensile strength specified in the product specification for the applicable size, grade, and thread series. These call out can be in straight loads or cross-sectional loads. When testing full size bolts, yield strength and elongation properties are not tested.

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