Method for producing steels having improved resistance to...

Details Method for producing steels having improved resistance to... Method for producing steels having improved resistance to...

C - Chemistry, Metallurgy

21

D

148/50

C21D 1/22 (2006.01) C21D 6/00 (2006.01) C22C 38/06 (2006.01) C22C 38/18 (2006.01) C22C 38/22 (2006.01) C22C 38/24 (2006.01) C22C 38/26 (2006.01) C22C 38/28 (2006.01) C22C 38/32 (2006.01)

Patent

CA 1188963

S P E C I F I C A T I O N Title of the Invention: METHOD FOR PRODUCING STEELS HAVING IMPROVED RESISTANCE TO SULFIDE STRESS CORROSION CRACKING Abstract of the Disclosure: A method for producing steels having improved resistance to sulfide stress corrosion cracking (SSC), which comprises quenching low-alloy steel containing 0.05 to 0.35% carbon, 0.01 to 0.30% silicon, 0.15 to 1.50% manganese and 0.005 to 0.10% aluminum with the balance being iron, from the austenite temperature zone so as to convert at least 90% of the steel to a martensitic one and then the steel in a temperature range of from 700°C to Ac1 transformation point for a period of time not longer than 300 seconds, or in a temperature range of from 680°C to 700°C for a period of time ranging from 10 to 300 seconds.

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