SUS630 Stainless Steel: Precipitation-Hardening Strength

Corrosion Resistance Good resistance to a wide range of corrosive environments; approaching that of Grade 304 stainless steel. Like 304, this grade is subject to pitting and crevice corrosion in warm chloride environments. Grade 630 has been used for boat shafting for fresh water, and in sea water with the addition of cathodic protection.

 

Highly resistant to stress corrosion cracking if aged at 550°C or higher. Higher aging temperatures give better SCC resistance. Grade 630 is resistant to sulphide stress cracking (SSC) if highly aged; NACE MR0175 permits the use of 630 but only in a double age hardened condition (refer to MR0175 and ASTM A564M).

 

In solution treated Condition A the grade has lower resistance to stress corrosion cracking, and lower ductility compared to aged conditions. It should not generally be used in the solution treated condition, even if the hardness is considered satisfactory

 

 

If you have project requirements for SUS630 stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.