ThePipingMart Blog Grades Stainless Steel 316 Flanges – Composition, Properties and Uses

Stainless Steel 316 Flanges – Composition, Properties and Uses

Stainless steel 316 flanges - Composition Properties And Uses

Stainless steel 316 Blind flanges are widely used components in various industries. These devices are known for their durability, corrosion resistance, and high strength. This blog post will explore the composition, physical and mechanical properties, uses, and heat treatment of stainless steel 316 flanges.

What is Stainless Steel 316 Flanges?

Stainless steel 316 flanges are a metal piping component connecting two separate pipes. They are corrosion-resistant and have superior mechanical properties to other stainless steel alloys, making them highly durable and suitable for industrial applications in corrosive environments.

Stainless Steel 316 Flanges Composition:

Stainless steel 316 Weld Neck flanges comprise iron, carbon, silicon, manganese, nickel, and chromium. These elements give the flanges unique properties, including good machinability, weldability, and excellent corrosion resistance. The high percentage of chromium and nickel in the composition provides resistance to oxidation, rust, and staining.

Grade C Mn Si P S Cr Mo Ni N
SS 316 0.08 max 2 max 0.75 max 0.045 max 0.030 max 16 – 18 2 – 3 10 – 14 0.1 max

Stainless Steel 316 Flanges Physical Properties:

Stainless steel 316 Nippolet Flanges exhibit high melting points, density, and electrical conductivity. The flanges have a specific gravity of 7.98, a melting point of 1398-1422℃, and electrical conductivity of 3% IACS. The flanges also exhibit low thermal conductivity and a 16.5 × 10^-6 /K thermal expansion coefficient.

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Stainless Steel 316 Flanges Mechanical Properties:

Stainless steel 316 Forged flanges have remarkable strength properties such as yield strength, tensile strength, and elongation. The flanges have a minimum yield strength of 205 MPa, a minimum tensile strength of 515 MPa, and an elongation of 40%. The flanges exhibit excellent toughness, ductility, and resistance to stress corrosion cracking.

Stainless Steel 316 Flanges Equivalent:

STANDARD WERKSTOFF NR. UNS JIS BS COST AFNOR EN
SS 316 1.4401 / 1.4436 S31600 SUS316 316S31 / 316S33 Z7CND17‐11‐02 X5CrNiMo17-12-2 / X3CrNiMo17-13-3

Stainless Steel 316 Flanges Uses:

Stainless steel 316 Lap Joint flanges are used in various applications such as chemical processing, oil and gas refineries, marine applications, and food processing industries. The flanges are ideal for applications that require high strength, excellent corrosion resistance, and good machinability. Stainless steel 316 flanges are used in pipelines, pressure vessels, storage tanks, and heat exchangers.

Stainless Steel 316 Flanges Heat Treatment:

Stainless steel 316 flanges can be heat treated by annealing, stress relieving, quenching, and tempering. Annealing improves the ductility, toughness, and corrosion resistance of the flanges. Stress-relieving enhances the stability and resistance to stress corrosion cracking of the flanges. Quenching improves the flanges’ hardness, strength, and wear resistance properties. Tempering reduces the brittleness and enhances the toughness of the flanges.

Stainless Steel 316 Flanges Corrosion Resistance:

Stainless steel 316 Socket Weld flanges have excellent corrosion resistance properties. The high percentage of chromium, nickel, and molybdenum in the composition provides resistance to pitting, crevice, and general corrosion. The flanges also resist halides, sulfuric acid, and organic acids. The excellent corrosion resistance properties allow the flanges to be used in harsh environments.

Conclusion:

Stainless steel 316 flanges are remarkable components that exhibit excellent mechanical properties and corrosion resistance. The flanges are used in various applications that require high strength, good machinability, and resistance to harsh environments. Understanding the composition, physical and mechanical properties, uses, heat treatment, and corrosion resistance properties of stainless steel 316 flanges is vital in selecting the appropriate flanges for specific applications.

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