1.4401, also known as AISI 316, belongs to the group of austenitic stainless steels and is particularly suitable for applications in aggressive environments. This alloy combines excellent corrosion resistance with high strength and good processability. With an increased molybdenum content, 1.4401 is ideal for use in chloride-containing or chemically demanding conditions.

Key Properties of 1.4401

Excellent Corrosion Resistance

Thanks to its molybdenum content (approx. 2–2.5%), 1.4401 offers outstanding resistance to pitting, crevice corrosion, and general corrosion in chloride-containing and acidic media.

High Resistance in Aggressive Environments

1.4401 performs excellently in marine environments, chemical plants, and industrial processes.

Good Weldability

Like other austenitic steels, 1.4401 can be easily welded without requiring post-weld heat treatment.

Excellent Mechanical Properties

The combination of strength, toughness, and formability makes 1.4401 a versatile material for demanding applications.

Technical Specifications and Advantages

Material number: 1.4401 (X5CrNiMo17-12-2) according to DIN EN 10088-1
Alloying elements:

Chromium (approx. 16–18%), Nickel (approx. 10–13%), Molybdenum (approx. 2–2.5%), balance iron

Tensile strength: 500–700 MPa
Delivery forms: Available as sheets, bars, tubes, profiles, and cut-to-size products
Surface finishes: Mill finish, ground, polished, or coated

Typical Applications of 1.4401

Chemical Industry

Perfect for containers, piping, and equipment that come into contact with aggressive chemicals like acids or alkalis.

Marine Applications

1.4401 is ideal for shipbuilding, offshore facilities, and port infrastructure where resistance to saltwater is crucial.

Food and Pharmaceutical Industry

Due to its hygienic properties and corrosion resistance, 1.4401 is widely used in processing plants, containers, and pipelines.

Construction Industry

Used in architectural applications such as facades, railings, and roofing systems that must meet both functional and aesthetic requirements.

Conclusion

1.4401 is a high-performance stainless steel that offers outstanding reliability in demanding environments. Its exceptional corrosion resistance and versatility make it the top choice in many industries, especially where chemicals, saltwater, or high hygienic standards are involved. Contact us to learn more about 1.4401 or to request a customized offer for your application.

Frequently Asked Questions (FAQ) about 1.4401

1. What is 1.4401?

1.4401 is an austenitic stainless steel alloyed with molybdenum, known for its excellent corrosion resistance in aggressive environments.

2. What are the benefits of 1.4401?

1.4401 combines outstanding corrosion resistance with good workability, high strength, and hygienic properties.

3. What are typical applications of 1.4401?

This alloy is ideal for the chemical industry, marine applications, food and pharmaceutical production, construction, and medical technology.

4. Can 1.4401 be welded?

Yes, 1.4401 is very weldable and does not require post-weld treatment.

5. Is 1.4401 resistant to saltwater?

Yes, due to its molybdenum content, 1.4401 offers excellent resistance to saltwater and other chloride-containing media.