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document Stainless vs. Galvanized Material
Both stainless and galvanized steels prevent corrosion by forming a "sacrificial" layer of protective oxides. Stainless forms an almost invisible layer of chromium oxide and galvanized forms a (comparatively) thick layer of zinc oxide, according the Metallurgical Consultants website. Eventually,...
rating 18 May, 2012 Views: 6108 Comments: 0
document Stainless Steel Maintenance
Stain -"less" Steel Materials The attractive surface appearance of stainless steel products cannot be regarded as completely maintenance free. All grades and finishes of stainless steel may in fact stain or discolor in normal service if not properly maintained. To achieve maximum stain...
rating 18 May, 2012 Views: 4404 Comments: 0
document Chemical Analysis?
Chemical (elemental) analysis: the elemental analysis of raw material and products. These elements are what comprise the metals our products are made from. Essential elements for stainless steel are chromium, nickel, and molybdenum.
rating 18 May, 2012 Views: 2956 Comments: 0
document Salt Spray Testing?
Salt Spray (Fog) testing: Is used to determine how well a product can resist corrosion. ASTM B117 specification requires testing to 96 hours of salt fog testing without a sign of rust.
rating 18 May, 2012 Views: 2875 Comments: 0
document Pull Testing?
Tensile Testing; mechanical testing of raw material and products to determine strength. For product tests are performed to determine the working load limit, proof load, and breaking strength. Also tests can be performed on wire rope and chain sling assemblies to determine the combined strength of...
rating 18 May, 2012 Views: 2832 Comments: 0
document Magnetic Permeability?
Magnetic Permeability is the measure of the ability of a material to support the formation of a magnetic field within itself. In other words, it is the ability of a product to be magnetic. It is measured in a unit called “μ” (Greek letter lower case Mu). It is found in more conductive...
rating 18 May, 2012 Views: 3118 Comments: 0
document Hardness Testing?
Hardness testing: Checks how much a material or product deforms by an indentation test on a Rockwell hardness tester. For Stainless Steel we typically test on the Rockwell “A” scale. Carbon steel is usually measured on the “C” scale.
rating 18 May, 2012 Views: 2908 Comments: 0
document Surface Roughness Testing?
Surface Roughness Testing: Measures the condition of the surface of a machined part. This can affect how well the parts fit together, slide on one another or how well they appear. Usually measured in RMS (Root Mean Square) or RA  (roughness average) using a profilometer.
rating 18 May, 2012 Views: 2861 Comments: 0
document Liquid (dye) Penetrant Testing?
Dye Penetrant Testing: is used to detect cracks or fissures on a part that is subject to failure such as forged or cast items. These may be critical items used in lifting applications, or welded items.
rating 18 May, 2012 Views: 2582 Comments: 0
document What is the difference between Quality Control and Quality Assurance?
Answer: Often, Quality Control is confused with Quality Assurance. Though the two are similar, but there are some basic differences. Quality Control is concerned with examining the product or service, where Quality Assurance is concerned with examining the process that leads to the end...
rating 22 May, 2012 Views: 2508 Comments: 0

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