444
DSM
1.4521
444
SUS444
019Cr19Mo2NbTi
Food processing/Hot-water tanks/Heat-exchanger tubing
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444 stainless steel is a ferritic stainless steel alloy that belongs to the 400 series. Ferritic stainless steels are known for their high chromium content, which imparts corrosion resistance and other desirable properties. The composition of 444 stainless steel typically includes chromium, molybdenum, and sometimes niobium.
Here are some key features of 444 stainless steel:
Chemical Composition:
Chromium (Cr): 17.5-19.5%
Molybdenum (Mo): 1.75-2.50%
Nickel (Ni): 1.0% max
Titanium (Ti): 0.20-0.50%
Niobium (Nb): 0.10-0.30%
Copper (Cu): 1.0% max
Manganese (Mn): 1.0% max
Silicon (Si): 1.0% max
Carbon (C): 0.025% max
Phosphorus (P): 0.03% max
Sulfur (S): 0.02% max
Corrosion Resistance: 444 stainless steel provides good corrosion resistance in a variety of environments, including those containing mild acids and chlorides. The addition of molybdenum enhances its resistance to pitting and crevice corrosion.
Heat Resistance: While not as heat-resistant as austenitic stainless steels, ferritic stainless steels like 444 exhibit good heat resistance for general use.
Weldability: 444 is generally considered to have good weldability, and it can be welded using common welding methods. However, care should be taken to ensure that the welding process does not degrade its corrosion resistance.
Applications: Common applications for 444 stainless steel include automotive exhaust systems, heat exchangers, and other components exposed to mildly corrosive environments. It is chosen for applications where a combination of corrosion resistance and cost-effectiveness is important.
Magnetic Properties: Like other ferritic stainless steels, 444 is magnetic.
444 stainless steel is sometimes chosen as an alternative to austenitic stainless steels, particularly in applications where cost considerations are important. However, it's essential to carefully assess the specific requirements of the intended application, as ferritic stainless steels may have different properties than austenitic grades.
444 stainless steel is a ferritic stainless steel alloy that belongs to the 400 series. Ferritic stainless steels are known for their high chromium content, which imparts corrosion resistance and other desirable properties. The composition of 444 stainless steel typically includes chromium, molybdenum, and sometimes niobium.
Here are some key features of 444 stainless steel:
Chemical Composition:
Chromium (Cr): 17.5-19.5%
Molybdenum (Mo): 1.75-2.50%
Nickel (Ni): 1.0% max
Titanium (Ti): 0.20-0.50%
Niobium (Nb): 0.10-0.30%
Copper (Cu): 1.0% max
Manganese (Mn): 1.0% max
Silicon (Si): 1.0% max
Carbon (C): 0.025% max
Phosphorus (P): 0.03% max
Sulfur (S): 0.02% max
Corrosion Resistance: 444 stainless steel provides good corrosion resistance in a variety of environments, including those containing mild acids and chlorides. The addition of molybdenum enhances its resistance to pitting and crevice corrosion.
Heat Resistance: While not as heat-resistant as austenitic stainless steels, ferritic stainless steels like 444 exhibit good heat resistance for general use.
Weldability: 444 is generally considered to have good weldability, and it can be welded using common welding methods. However, care should be taken to ensure that the welding process does not degrade its corrosion resistance.
Applications: Common applications for 444 stainless steel include automotive exhaust systems, heat exchangers, and other components exposed to mildly corrosive environments. It is chosen for applications where a combination of corrosion resistance and cost-effectiveness is important.
Magnetic Properties: Like other ferritic stainless steels, 444 is magnetic.
444 stainless steel is sometimes chosen as an alternative to austenitic stainless steels, particularly in applications where cost considerations are important. However, it's essential to carefully assess the specific requirements of the intended application, as ferritic stainless steels may have different properties than austenitic grades.
