The main characteristics and uses of austenitic stainless steel S31703 00Cr19Ni13Mo3

Introduction

00Cr19Ni13Mo3 stainless steel, also known as Type S31703 and AUSTENITIC-FERRITIC stainless steel, is a low carbon, molybdenum-bearing, austenitic stainless steel. S31703 stainless has a composition of 17–18% chromium, 12–14% nickel, 2–3.5% molybdenum, and 0.15% carbon, with trace amounts of phosphorus and sulfur. It exhibits excellent resistance to major chemical processes and is extremely resistant to chloride pitting and stress corrosion cracking.

Chemical Composition

00Cr19Ni13Mo3 stainless steel is composed of 17-18% chromium, 12-14% nickel, 2-3.5% molybdenum, and 0.15% carbon, with trace amounts of phosphorus and sulfur.

Mechanical Properties

The mechanical properties of 00Cr19Ni13Mo3 stainless steel include a high yield strength of 275-362 MPa, a high tensile strength of 651-827 MPa, and an elongation of 40-45%. The material is also highly resistant to fracture and cracking.

Physical Properties

00Cr19Ni13Mo3 stainless steel has a density of 7.85 g/cm³ and an electrical resistivity of 16.9 nΩ.m at 20°C. It has a thermal conductivity of 16.2 W/mK and a thermal expansion of 8.5 µm/mK.

Corrosion Resistance

Due to its chemical composition, 00Cr19Ni13Mo3 stainless steel is highly resistant to corrosive environments. It offers remarkable resistance to stress corrosion cracking and chloride pitting, giving the user excellent and long-lasting protection from these agents.

Weldability

00Cr19Ni13Mo3 stainless steel is easily weldable by all standard methods and can be welded to itself as well as to many other steels. It should be preheated to 593°C (1099°F) before welding, and is best welded with the aid of an inert gas shield, such as argon.

Heat Treatment

00Cr19Ni13Mo3 stainless steel can be heat treated to a maximum temperature of 760°C (1400°F). After heating and quenching, the material should be cooled quickly and tempered.

Applications

Due to its excellent strength and corrosion resistance, 00Cr19Ni13Mo3 stainless steel is used in a variety of applications, including:

• Food processing equipment

• Desalination plants

• Chemical processing equipment

• Nuclear and marine applications

• Pressure vessels, piping, valves, and flanges

• Heat exchangers

• Fasteners

Conclusion

00Cr19Ni13Mo3 stainless steel is a low carbon, molybdenum bearing, austenitic stainless steel with excellent strength and corrosion resistance. Due to its attributes, it can be used in a variety of applications, including food processing, desalination plants, nuclear and marine projects, and more.

UNS S31703 (00Cr19Ni13Mo3) is a duplex stainless steel that is composed of 19% chromium, 13% nickel, and 3% molybdenum. This combination gives it amazing strength, strong corrosion resistance, and pitting resistance, and high crevice corrosion resistance. It is a ferritic and austenitic steel, and therefore has a dual phase microstructure. As a result, it benefits from the strength of one phase and the corrosion resistance of another.

Applications

UNS S31703 has a wide range of applications. It is often used in pressure vessels, storage tanks, and other high-pressure equipment due to its high strength and corrosion resistance. This type of steel is also used in the manufacture of chemical and paper processing equipment, as well as heat exchangers, boilers, and nuclear waste storage containers.

Characteristics

UNS S31703 exhibits excellent strength, resistance to stress corrosion cracking, high pitting and crevice corrosion resistance, and strong weldability. Furthermore, it exhibits good fatigue strength and fracture toughness, making it suitable for a wide range of applications. It can be used at temperatures ranging from -50°F to 300°F.

UNS S31703 (00Cr19Ni13Mo3) is a highly versatile duplex stainless steel that can be used in a wide range of applications due to its excellent strength, high corrosion resistance, and weldability. It is a ferritic-austenitic steel, which gives it a dual microstructure and enhances its strength and corrosion resistance. This makes UNS S31703 ideal for applications such as pressure vessels, storage tanks, chemical and paper processing equipment, heat exchangers, and boilers.