Durometer Hardness Testing

Metaltest provides durometer hardness testing in the two most common scales; ASTM D2240 type A and type D scales.

Durometer, like many other hardness tests, measures the depth of an indentation in the material created by a given force on a standardized presser foot. ASTM D2240 durometer allows for a measurement of the initial hardness, or the indentation hardness after a given period of time. The basic test requires applying the force in a consistent manner, without shock, and measuring the hardness (depth of the indentation).

The A scale is for softer vulcanized rubber, natural rubber, nitriles, thermoplastics, elastomers, flexible polyacrylics and thermosets, wax, felt and leather.

The D scale is for Hard Rubber, thermoplastic elastomers, hard plastics, and rigid thermoplastics.

Electrical Conductivity Testing (eddy-current)

Metaltest provides electrical conductivity testing for determining the electrical conductivity of nonmagnetic metals using the electromagnetic (eddy-current) method. This test is applicable to metals that have either a flat or slightly curved surface and includes metals with or without a thin nonconductive coating. Electrical conductivity testing can be used to determine: type of metal or alloy, type of heat treatment (for aluminum this evaluation should be used in conjunction with a hardness examination), aging of the alloy, and heat damage.

Electrical conductivity, when evaluated with eddy-current instruments, is usually expressed as a percentage of the conductivity of the International Annealed Copper Standard (IACS).

Temper Inspection of nonferrous metals
Temper inspection per BAC5946; using conductivity and hardness to confirm the alloy and temper for raw material and parts machined from material procured in the final heat treated condition. When applied, the hardness and conductivity values specified provide a high degree of confidence that the material satisfies the material specification requirements.

Scanning Electron Microscope (SEM)

Scanning Electron Microscopy (SEM) is an important tool for materials and failure analysis. SEM Lab, Inc. can provide high magnification, high resolution images of samples at magnifications up to 50,000x. Plastics, glasses, or ceramics are commonly examined and require no special coating to be viewed in our SEM. The sample chamber will accept specimens up to 6 in. x 6 in. x 1 in.

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