SUS444

Published: 8:33:14 September 16,2012  Views: 141

SUS444

Performance (as defined in

With ultra-low carbon and nitrogen impurity elements SUS444 SUS444 added to improve the resistance to pitting corrosion of the molybdenum element the SUS444 add the stabilizing effect of niobium or mechanical properties of titanium element grades yield strength N/mm2 Tensile strength N/mm2 Elongation% Hardness HB / HRB / HV cold-formed 180 °, d = the 2a of SUS444 typical 31048030160 qualified All SUS444 Standards> = 245> = 410> = 20 ≤ 217 / ≤ 96 / ≤ 230 qualified SUS304 standard> = 205> = 520> = 40 ≤ 200 - SUS316L standard> = 175> = 480> = of 40 ≤ 200 - the physical characteristics grades density g/cm3 magnetic thermal conductivity of 100 ° C, W / m * K thermal expansion coefficient of 0 to 100 ° C, mm / m * K SUS444 7.75 26.8 11.0 '10-6 SUS304 8.03 16.2 16.9 '10-6 SUS316L 7.99 16.2 16.0 '10-6 SUS444 low density area increases the SUS444 thermal conductivity, easy-to-heat SUS444 thermal expansion less small welding deformation resistance corrosive resistance to chloride ion stress corrosion cracking using laboratory accelerated corrosion test methods and test standards: GB / T 17898-1999 << stainless steel in boiling magnesium chloride stress corrosion test methods >> test material SUS304 SUS316L SUS444 crack occurrence time h 2.5 9.8 48h No cracks cracks throughout the time h 2.5 11.8 48h No crack SUS444 having excellent resistance to chloride ion stress corrosion cracking SUS444 resistance to chloride ion corrosion better than SUS304 SUS444 ion pitting corrosion resistance to chlorine and SUS316L quite 444 welding no tendency to intergranular corrosion.

Chemical composition

SUS444 carbon (C) ≤ 0.025, the manganese (Mn) ≤ 1.00, silicon (Si) ≤ 1.00, phosphorus (P) ≤ 0.030, sulfur (S) ≤ 0.030, chromium (Cr) 17.00 ~ 20.00, molybdenum (Mo) 1.75 ~ 2.50 [1-2]
'SUS444'