WMT&R’s Metallographic Labs are
designed to meet all common and specialized needs from lot release and
material-overcheck testing to failure analysis and problem solving on test
specimens, finished parts, and fasteners.
A major investment in Metallographic
facilities has allowed us to incorporate all metallographic and
analytical related activities into one state-of-the-art building. These
specialized areas are the Metallographic Section, Analytical Department, Heat
Treating Section, and the Stress Corrosion Testing Laboratory.
Our experienced technicians and
metallurgists work closely with the analytical and physical testing
groups to provide an overall view of material characteristics so that even the
most difficult problems can be identified and solved quickly.
Conventional specimen preparation and automated
polishing procedures using 1.25” to 2” diameter compression mounts
ensure superior edge retention and flatness of specimens. Other methods include
cold mounting and slot polishing.
Light microscopes and metallographs using conventional and
inverted stages are used to characterize and photograph materials from 12X to
1200X for the following:
General Microstructure
Micro-cleanliness
Macro/Grain Flow
Carbide Distribution
IGA/IGO
Decarburization
Alloy Depletion
Casting/Mold Reactions
Dendritic Arm Spacing
Statistical Area/Shape Analysis
Weld Evaluations |
Grain Size
Porosity/DAS
Alpha Case
Diffusion Layers
Carburization
Plating Thickness
Near Surface Conditions
Volume Fraction
Phase Transformation
Plus many other examinations
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Our computerized image analysis system is used for fast and accurate statistical evaluation, as well as viewing of
specimens with multiple observers at the same time. Digital photo pages are
available in PDF, Standard Tiff, jpeg, and Bitmap single image formats for emailing.
Rockwell Hardness Tests using the latest instrumentation for quick,
accurate results on all scales covered in ASTM
E-18. We specialize in referee testing. Specialized test setups are
available upon request. Jominy Hardenability is also performed.
Reliable Micro Hardness Testing per ASTM E-92 and ASTM E-384 is available using the Knoop and Vickers scales with
capabilities from 10-grams to 10-kilogram loads. Automatic stage and automatic
read features offer quick turnaround with computerized data transfer
capabilities.
Brinell Hardness Testing from 500Kg to 3000Kg loads
is also available.
Standard tests include: X-ray
mapping, line scans, semi-quantitative analysis, contamination checks,
fractography, alloy identity, and general photography up to 50,000X. Data and
photographs are available in digital format to ensure maximum flexibility in
electronic storage
  Failure Analysis facilities contain a Scanning Electron
Microscope capable of viewing up to 100,000X. EDS X-ray analysis per ASTM
E 1508 is
available on site (including a light element detector) for identification of
particles with dimensions of only a few microns!
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