SUS444 steel is a high alloy ferrite stainless steel, compared with the commonly used steel SUS430:

1. The chromium content is about 1.0% higher and the alloy element molybdenum (Mo) is added. Therefore, the steel has good resistance to pitting corrosion, crevice corrosion and stress corrosion, and its corrosion resistance is superior to SUS304 in some fields And SUS316.

2. Titanium (Ti), niobium (Nb), zirconium (Zr) and other stabilizing elements, so the steel has good resistance to intergranular corrosion and high temperature oxidation resistance.

444 stainless steel products from China supplier

Chemical composition
Carbon C: ≤0.025
Silicon Si: ≤ 1.00
Mn: ≤ 1.00
Sulfur S: ≤0.030
Phosphorus P: ≤0.040
Cr Cr: 17.00 ~ 20.00
Ni: (≤0.60)
Molybdenum Mo: 1.75 to 2.50
Nitrogen N: ≤ 0.025
Titanium + niobium + zirconium Ti + Nb + Zr: = 8 * C ≤ 0.8

Characteristics and scope of application
SSUS444 (00Cr18Mo2) is an ultra low carbon nitrogen containing 18% chromium with 2% molybdenum and highly corrosion resistant ferritic stainless steel. The steel is generally used to stabilize niobium or titanium, can avoid the intergranular corrosion after welding. The steel is particularly suitable for use in a variety of water treatment devices.

SUS444 has an ultra-low carbon-nitrogen impurity element.
SUS444 added to improve the resistance to corrosion resistance of molybdenum elements.
SUS444 adds a niobium or titanium element with a stabilizing effect.