2205 stainless steel coil
2205 stainless steel coil is a type of duplex stainless steel, also known as UNS S31803 or S32205. Its standard number is ASTM A240/A240M--01. It is mainly used in fields such as petrochemicals, marine engineering, chemical ship manufacturing, and heat exchangers.
Product Details
The yield strength of 2205 stainless steel coil is more than twice that of ordinary austenitic stainless steel. This characteristic enables designers to reduce the weight when designing products, making this alloy more cost-effective than 316 and 317L. This alloy is particularly suitable for temperatures ranging from -50°F to +600°F. Applications beyond this temperature range can also consider this alloy, but there are some limitations, especially when it is used in welding structures.
Application fields:
· Pressure vessels, high-pressure storage tanks, high-pressure pipes, heat exchangers (chemical processing industry).
· Oil and gas pipelines, heat exchanger pipe fittings.
· Sewage treatment systems.
· Paper and papermaking industrial classifiers, bleaching equipment, storage and treatment systems.
· Rotating shafts, press rollers, blades, impellers, etc. in high-strength and corrosion-resistant environments.
· Cargo boxes of ships or trucks.
· Food processing equipment.
The content of chromium, molybdenum and nitrogen in 2205 duplex stainless steel makes it highly resistant to pitting and crevice corrosion in oxidizing and acidic solutions.
Stress corrosion resistance
The duplex microstructure of stainless steel helps enhance its resistance to stress corrosion cracking. Under certain temperature, tensile stress, oxygen and chloride conditions, austenitic stainless steel will undergo chloride stress corrosion. Due to the difficulty in controlling these conditions, the use of 304L, 316L and 317L is limited in this aspect.
Corrosion fatigue resistance
The high strength and corrosion resistance of 2205 duplex steel make it have a high corrosion fatigue strength. Processing equipment is prone to be affected by corrosive environments and loading cycles. The characteristics of 2205 are very suitable for such applications.