Resistance to Corrosion

In every metal application, corrosion is an important consideration. In the U.S., around $9 billion goes to handling pipeline corrosion incidences. Metals are acted upon by rust, chemicals, as well as other environmental factors. Therefore, it would be best if you chose flanges that can withstand these factors. Stainless steel becomes a perfect choice since it has a high resistance to corrosion.

Durability

Stainless steel is durable and can withstand a lot of pressure. Although aluminum could be a cheaper option, it cannot withstand as much stress.

Withstanding High Temperatures

In industries, the temperatures could get a bit extreme. However, stainless steel flange fittings can withstand the temperatures without deformation or warping. Therefore, at no point will your system be compromised.

Benefits

• Corrosion Resistance: Stainless steel is designed to resist rust and corrosion.
• Strength: Provides a strong connection under high-pressure conditions.
• Versatility: Available in various types and sizes for diverse applications.

About Stainless Steel

In metallurgy, stainless steel also called as inox steel or inoxidizable steel. It is a steel material alloyed with high content of chromium and nickel, where

• Minimum Cr at 10.5%
• Minimum Ni at 8%
• Maximum Carbon at 1.5%

As we know, stainless steel flange is impressed by it's great corrosion resistance, which because of the elements of Chromium, and as Cr increased, better resistant performances will be gained.

On the other hand, additions of Molybdenum will increase corrosion resistance in reducing acids and against pitting attack in chloride solutions. So there are different grades of stainless steel with varying Cr and Mo compositions to suit the environment with required to be alloyed.

Advantages:

• Resistant to corrosion and staining
• Low maintenance
• Bright familiar luster
• Steel Strength

ASTM A182 - Popular Standard for Stainless Steel Pipe Flange

For stainless steel pipe flange, common use material is ASTM A182 F304/L and F316/L.

ASTM A182: It refers to forged and rolled alloy and stainless steel pipe flanges, fittings, valves and parts for high temperature service. And it includes several grades of austenitic and ferritic-austenitic stainless steels.

Dimensions: 1/2'' to 2'', 3'', 4'', 6'' and up to 48''.
Wall thickness schedule: SCH 10S, SCH 40S, SCH STD, SCH 80S
Pressure ratings: 150#, 300#, 600#, 900#, 1500#, 2500#
Material Grade: F304, F316, F321 and more

317/L – UNS S31700 / UNS S31703

An austenitic chromium grade containing molybdenum, and similar to grade 316, except with a higher value of stress resistance, increased tensile strength, higher service in elevated temperature, and general resistance to corrosion from chloride, sulfuric solutions, or other corrosive media. The low carbon option (L) can be selected for a more optimal weld requirement.

310/310S – UNS S31000 / UNS S31008

A stainless grade with excellent workability, utilized in heat exchanger applications and projects with elevated temperatures involving high salinity. This grade contains an increased chromium and nickel content and has elevated characteristics of oxidation and corrosion resistance when compared to more common stainless grades such as 304 and 309.

321/321H – UNS S32100 / UNS S32109

An austenitic grade stainless containing over 4 or 5 times the level of titanium as it does in carbon, with a maximum titanium value of 0.70%. This material has a high intergranular corrosion resistance and is well utilized in high heat applications in the aerospace industry such as aircraft jet engine manifolds and exhaust components.

347/347H – UNS S34700 / UNS S34709

A stainless grade containing a small percentage of columbium and tantalum for stabilization purposes. Commonly used in the combined high heat and corrosion environments of refineries, power generation, and airline service, this austenitic alloy retains better properties in corrosive environments compared to similar alloys 321 and 317.

CHROME

A corrosion resistant material category containing a minimal nickel content, and just enough chromium to reduce oxidation. Popular grades under the A182 spec include F11, F22, F5, and F9.

DUPLEX

Can’t decide between stainless and alloy? How about the best of both worlds? We offer a variety of duplex in both forged and plate forms including grades 2205, F51, F53, and F60.

What are stainless steel flanges?

Stainless steel flanges are flanges made from stainless steel, which is a steel alloy that contains chromium and other metals that give it superior corrosion resistance.

What are the advantages of stainless steel flanges?

Stainless steel flanges are strong, durable, and highly corrosion-resistant. They are also non-magnetic and hygienic.

When should I use stainless steel flanges?

Stainless steel flanges should be used in applications where high corrosion resistance is required, such as in the chemical, food processing, and pharmaceutical industries.

When should I not use stainless steel flanges?

Stainless steel flanges are more expensive than other types of flanges, so they should not be used in applications where cost is a major consideration and where corrosion resistance is not required.

What are the different types of stainless steel flanges?

Stainless steel flanges are available in various types, including slip-on flanges, threaded flanges, weld neck flanges, and socket weld flanges.