Mechanical Properties of Low Alloy Duplex Stainless Steel 00Cr21Mn5NiN

Mechanical Properties of Low Alloy Dual-Phase Stainless Steel 00Cr21Mn5NiN

Stainless steels are commonly used as a material for making items that are resistant to corrosion and wear. Low alloy dual-phase stainless steel (00Cr21Mn5NiN) is a type of austenitic stainless steel which contains chromium and nickel as its main alloying elements. These alloying elements provide the steel with better corrosion resistance than martensitic steels. The mechanical properties of this steel are determined by the amount of alloying elements present. The higher the amount, the better the mechanical properties.

The tensile strength of steel 00Cr21Mn5NiN is 1300MPa and the yield strength is 1080MPa. The elongation at break of this steel is 26%, and the hardness is between 190-240HBW. The impact toughness of this steel is 11J/cm2. The impact of 00Cr21Mn5NiN is enhanced by the presence of nickel and chromium which improve wear resistance as well.

The mechanical properties of steel 00Cr21Mn5NiN can be improved by the addition of additional elements like manganese, silicon, sulfur and phosphorus. These elements increase the strength and toughness of the steel without compromising its corrosion resistance. The hardness of the steel can also be improved by adding additional elements like boron, vanadium and molybdenum. The corrosion resistance of this steel can be further enhanced by the addition of nitrogen.

In conclusion, low alloy dual-phase stainless steel 00Cr21Mn5NiN has a good combination of mechanical and corrosion resistance properties. This steel has a tensile strength of 1300MPa, a yield strength of 1080MPa, and an elongation at break of 26%. The impact toughness of this steel is 11J/cm2 and the hardness is between 190-240HBW. The corrosion resistance of this steel can be further enhanced by the addition of additional elements like nitrogen, manganese, silicon, sulfur and phosphorus.

00Cr21Mn5NiN duplex stainless steel is a duplex stainless steel with good corrosion resistance, high strength, impact toughness and good weldability. It is composed of austenite and ferrite in equal proportion, and has the properties of both ferrite and austenite. This kind of steel not only has good corrosion resistance, but also has higher strength than the corrosion resistance stainless steel. Because of its balanced equilibrium, its corrosion resistance greatly surpasses 304 type stainless steel in minimally corrosive environment, and is much better than 316L type stainless steel in medium corrosion environment.

Its fatigue strength is also much higher than austenitic stainless steel and ferritic stainless steel. The existing yield strength of this steel grade is 594MPa and the tensile strength is 834MPa. The elongation is 22%, impact energy is 34J, fracture toughness is 147MPa •m1/2, and its heat treatment has good hardenability. The Brinell hardness is 204HB, and the Rockwell hardness is 30HRB.

Due to its balanced composition of austenite and ferrite, this kind of steel has better resistance to stress corrosion cracking (SCC) than 316L steel. The pitting corrosion resistance of 00Cr21Mn5NiN duplex stainless steel is better than that of ferritic stainless steel, while the fatigue strength is higher than that of austenitic stainless steel, so this kind of steel has wider application. It can be used in seawater cooling system and petrochemical industry.

In summary, 00Cr21Mn5NiN duplex stainless steel has high strength and good corrosion resistance and weldability. It is suitable for many applications in the aquatic environment and the petrochemical industry. It is an economical and practical stainless steel.