Performance characteristics of Duplex Stainless Steel

High strength: The yield strength of duplex stainless steel can reach 400~550MPa, which is twice that of ordinary stainless steel, so it can save materials and reduce equipment manufacturing costs.

Excellent corrosion resistance: In terms of corrosion resistance, especially in harsh media environments (such as seawater, high chloride ion content), the pitting, crevice corrosion, stress corrosion and corrosion fatigue resistance of duplex stainless steel are significantly better than ordinary austenitic stainless steel, and can be comparable to high-alloy austenitic stainless steel.

Good plasticity and toughness: Compared with ferritic stainless steel, duplex stainless steel has higher plasticity and toughness, and no room temperature brittleness.

Good welding performance: Duplex stainless steel has good weldability and low thermal cracking tendency. Generally, no preheating is required before welding, and no heat treatment is required after welding. It can be welded with dissimilar materials such as 18-8 austenitic stainless steel or carbon steel.

Other characteristics: such as good local corrosion resistance, low linear expansion coefficient, high energy absorption capacity, etc.