What standard quality inspections are conducted on advanced stainless steel before shipment?

Chemical spectral analysis verifies chromium, molybdenum, nitrogen and nickel content meet advanced grade standards. Metallographic observation checks phase proportion and excludes brittle intergranular precipitates for duplex types. Mechanical tests measure yield strength, tensile strength and impact toughness to match equipment load requirements. Critical corrosion tests include pitting resistance testing and stress corrosion cracking simulation in chloride solution. Ultrasonic non-destructive inspection detects internal rolling defects, ensuring stable long-term operation in harsh marine and chemical working environments.