SSC test

2016-11-11 Rongda test 621 times

SSC test
Detection Content

Detection Purpose: Test material resistance to sulfide stress corrosion

Detection range: Oil pipeline, boiler, liquefied gas tank and other pressure vessels, metal and other products

SSC test: sulfide stress corrosion cracking, SSCC or SSC, full name sulfide stress corrosion test, is a special type of SCC. In the presence of water and H2S, it is a kind of metal cracking related to corrosion and tensile stress. SSC is related to metal brittleness caused by atomic hydrogen produced by acid corrosion on metal surface. In the presence of sulfide, it will promote the absorption of hydrogen. Atomic hydrogen energy diffuses into metal, reduces the toughness of metal and increases the sensitivity of crack. SSC is easy to occur in high strength metal materials and hard weld areas.            Carbon steel and low alloy steel are prone to sulfide stress corrosion (SSC) in hydrogen sulfide environment with high humidity, which poses a great threat to the safe operation of petroleum and petrochemical industrial equipment. The SCC of SSc is closely related to the strength, hardness, chemical composition and microstructure of the material. Reasonable material selection can effectively control the stress corrosion of hydrogen sulfide and increase the safety of petrochemical equipment.

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