1.4404 / 1.4401 - AT A GLANCE
What kind of steel is the 1.4404 / 1.4401?
The 1.4404 / 1.4401 Stahl (X2CrNiMo17-12-2 | X5CrNiMo17-12-2) are austenitic chromium-nickel-molybdenum stainless steels, resistant to general corrosion and pitting, polishable, good weldability and non-magnetizable.
Properties
As the second most commonly used stainless steel and with the addition of 2 – 2.5% of molybdenum, 1.4404 / 1.4401 exhibit better corrosion resistance, even in the presence of chlorides, and are stronger at elevated temperatures. Both, low temperature applications are possible, as well as applications up to 550°C.
Both alloys provide higher creep resistance, stress rupture and tensile strength at elevated temperatures. Typical for austenitic stainless steels they are both non-hardenable by heat treatment and provide excellent processing capability and formability.
These two stainless steel grades are widely used due to their excellent corrosion resistance. They offer excellent resistance in a wide range of chemicals and find their use in chemical processing equipment but also in marine applications.
Dual certification is given to the 1.4404 / 1.4401 which means both materials meet the chemical and mechanical properties and strictest requirements of both grades. This gives the user more flexibility and the confidence to interchange the materials in applications either one is specified.
Specificly this means for you:
- V4A (Testphase 4 Austenite) steel
- Corrosion resistant
- Heat resistant
- Acid resistant
- Not magnetisable
- Usable in minus temperatures
- Resistant to general and pitting corrosion
- Weldable
- Polishable
- Nitritable
- EDM machinable
- Usable up to a temperature of 550°C
- Forgable between 900 – 1200°C
- More corrosion resistant than 1.4301 / 1.4307
Applications
Stainless steel 1.4404 / 1.4401 can be used in many industries. When choosing between the two steel grades it is important to consider for which appications and which properties as well as what environment parts and workpieces are used for and in.
1.4404 can be used in the food processing industry, and the 1.4401 as a pharmaceutical grade for processing and storing of chemicals, in the paper industy and in the pharma industry due to its resistance to chloride and acids. Both find their uses in the automotiv- as well as the aviation industry.
- Chemical industry
- Pharma industry
- Food processing industry
- Valve- and plant industry
- Building industry
- Automotive industy
- Aviation industry
- Mechanical engineering
- Offshore
- Petrochemical industry
- Electrical equipment
- Decorative uses
- Kitchen equipment
