Metallography Testing Service

These are very widely used in characterizing the material. Various phases in an alloy system are quantified and the extents of their presence are correlated to the properties like strength, corrosion resistance, stability of the material, etc. The micro structure reveals the grain structure whether as cast, wrought, heat treated or subjected to any special treatment such as carburizing, hardening etc. This also reveals the presence of carbides particularly Chromium carbide which is a matter of concern in high chromium, nickel alloys. Tests under Micro Scope: Micro Examination with Photographs Micro Examination for Welded Pipes Macro Examination for Forgings, Mock-ups, Fillet Weld, Grain Flow Macro Examination for Pipes Weld Penetration Test with measurements and photographs

  1. Products   Ferrous, Nonferrous, Structural Materials, Pipe, Metallic coatings, Bronze and Brass. Parameters :   ü  Failure Analysis ü  Corrosion Resistance ü  Decarburization ü  Internal defects ü  Coating Thickness ü  Grain Size ü  Inclusion Rating ü  Grain Size  ü  Wall Thickness ü  Microstructure ü  Case Depth ü  Surface defects ü  Salt Spray test  The sample is subjected to accelerated corrosion in various corrosive equipments and the impact of the corrosion in estimated in the material by way of mechanical testing or loss of weight. Intergranular Corrosion test as per ASTM A 262 Practice A (Oxalic Acid Etch Test) Practice B (Ferrous Sulphate-sulphuric acid) Practice C (Boiling in Nitric Acid) Practice E (Copper Sulphate-Sulphuric Acid 15hrs.) Practice F (Copper Sulphate-Sulphuric Acid 72hrs) Pitting Corrosion Test as per ASTM G48 Salt Spray Test per ASTM B117   Stress-Corrosion Cracking test as per ASTM G35                

• Brand Name: Spectro
• Place of Origin: Delhi, India

Ferrous materials Grain size Effective case depth Depth of surface defect Non-metallic inclusion content Macroscopic examination of steels Graphite type and distribution in cast irons Segregation of carbides   Microstructural tests on non-ferrous alloys Grain size Depth of cladding Depth of surface defects  Porosity content.  

Metallography is that branch of science which deals with the study of properties and structure of metals and alloys by making use of x-ray diffraction and other microscopic techniques. The main objective of carrying out metallographic tests is to examine the microstructure of any metal or an alloy sample. The three dimensional arrangement of the atomic elements ranging from 1µm to 1mm is examined by the means of light optical or scanning electron microscope.

Metallography is that branch of science which deals with the study of properties and structure of metals and alloys by making use of X-Ray Diffraction and other Microscopic Techniques. The main objective of carrying out metallographic tests is to examine the microstructure of any metal or an alloy sample. The three dimensional arrangement of the atomic elements ranging from 1µm to 1mm is examined by the means of Light Optical or Scanning Electron Microscope.

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