Intergranular corrosion test
Tianjin Rong Da Testing Co., Ltd. contact: Wang Jingfu
Cell phone: 13102238283 QQ:3144667033
Telephone: 022-23892103
Intergranular corrosion and local corrosion. Corrosion of internal expansion along the boundaries between metal grains. Intergranular corrosion is the local corrosion failure mode of the metal in the proper corrosion environment and the occurrence and development of intergranular corrosion. Intergranular corrosion from the surface of the metal material, along the grain boundaries to the internal development, so that the loss of the bonding force between the grains, so that the strength of the material almost completely disappeared. For example, suffering from intergranular corrosion of stainless steel materials, although the appearance is also very bright, but it is possible to break into small pieces of fine powder.
Test method:
The intergranular corrosion of A stainless steel, stainless steel 10% oxalic acid etch test method;
Stainless steel intergranular corrosion B method -- Test Method for corrosion of stainless steel sulfuric acid ferric sulfate;
C method of intergranular corrosion of stainless steel -- Test Method for 65% nitric acid corrosion of stainless steel;
Test method: stainless steel nitric hydrofluoric acid corrosion of stainless steel intergranular corrosion D;
E method of intergranular corrosion of stainless steel -- Test Method for corrosion of stainless steel sulfuric acid copper sulfate.
Test criteria are:
Corrosion test method for corrosion of stainless steel in 4334-2008 GB/T metals and alloys
Standard Practice for detection of intergranular corrosion susceptibility of austenitic stainless steel A262-2014 ASTM
G28-2002 ASTM (2008) to detect the corrosion resistance of the alloy of high nickel chromium bearing alloy is easy to be corroded by the test method.