SUS347
SUS347 (18Cr-9Ni-Nb) containing Nb can improve intergranular corrosion resistance.
SUS347 (347/S34700/0Cr18Ni11Nb) austenitic stainless steel with good anti crystalline corrosion resistance. It has good corrosion resistance in acid, alkali and salt solution, and has good oxidation resistance and weldability at lower temperature of 800. 347 stainless steel has excellent high temperature stress rupture (Stress Rupture) performance and high temperature anti creep performance (Creep, Resistance), stress and mechanical properties are better than 304 stainless steel.
Widely used in aviation, power generation, chemical, petrochemical, food, paper and other fields, such as large boilers, superheater, reheater, steam pipes, petrochemical heat exchanger pipe.
Chemical composition:
Si: Si = 1
P: P = 0.045
Sulfur: S = 0.030
NB: Nb = 10*C
Chromium Cr:17.00~19.00
Solution treatment status, material properties:
The yield strength (N/mm2 = 206)
Tensile strength (N/mm2 = 520)
Elongation of EL (%) = 40
HB: = 18