Grade 44LN
ISO Numeric Designation S31200
Corresponding Standard ISO 15156(3)-2003
Petroleum and Natural Gas Industries — Materials for Use in H2S-Containing Environments in Oil and Gas Production — Part 3: Cracking-Resistant Cras (Corrosion-Resistant Alloys) and Other Alloys
Classification Duplex Stainless Steel
Properties Corrosion Resistance
Density 7.8 g/cm3
44LN Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo N More
Minimum Value - - - - - 24 5.5 1.2 0.14 FPREN:30~36
Maximum Value 0.03 1 2 0.045 0.03 26 6.5 2 0.2
• F<sub>PREN</sub>=Pitting Resistance Equivalent Number

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