Analytical Services: Metallography
Opaque object microscopy, coating thickness, plating, case hardness and depth, grain size, corrosion analysis, heat treat verification, fracture morphology and more.
This is the technique used to examine the internal structure of a material. These structures are known as crystals [in organics] or grains [metals]. The appearance of this "microstructure" is a key to failure analysis and understanding mechanical behavior. Laboratory techniques like microscopy, spectroscopy and x-ray diffraction are combined with a thorough knowledge of thermodynamics, engineering metallurgy, polymer chemistry and applied mechanics to understand and explain the behavior of the materials. This scientific understanding is balanced by real-world understanding of manufacturing and design applications.
Metallographic Testing Applications:
- Coating thickness
- Weld and heat affected zone examinations
- Microhardness
- Plating thickness & adhesion
- Grain size
- Corrosion analysis
- Heat treating including case depth and hardness
- Fracture morphology
- Extent & size of porosity
- Inclusion content (non-metallic...)
- Intergranular attack (IGA) and intergranular oxidation (IGO)
- Phase identification
- Extent of cold working
News
- April 2, 2008 - Passivation featured in the latest edition of NHML's Nuts & Bolts
- April 2, 2008 - Glass Vial Sprinkler Accidents featured in the latest edition of NHML's Nuts & Bolts
- January 2008 - Passing of the hands - Tim Kenney, President/CEO acquired full ownership of New Hampshire Materials Laboratory on January 8, 2008. Senior Scientist, Fred Hochgraf remains an active participant here at NHML
- January 18, 2008 - Important Customer Notice: For your convenience NHML now accepts American Express, Discover Card, MasterCard & Visa.
- October 5, 2007 - Testing for Toxic Lead May Not Be Your Only Concern
- May 21, 2007 - Embrittlement of Steels featured in NHML's Nuts&Bolts newsletter
- December 20, 2006 - NHML launches new Web site
- May 1, 2006 - Hydrolysis of Fiberglass featured in the latest edition of NHML's Nuts & Bolts
Related Materials
- Chemical Testing and Analysis
- Failure Analysis
- Mechanical Testing and Analysis
- Metallography
- Professional Services
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