316L / 1.4435 is a 316L / 1.4432 alternative with higher chromium and nickel content for improved corrosion resistance and formability . 316L / 1.4435 is an austenitic stainless steel belonging to the standard CrNiMo stainless steel family . 316L / 1.4435 has low carbon content for improved resistance to post-weld intergranular corrosion, increased nickel content for improved formability , and increased molybdenum content for slightly improved corrosion resistance.
Due to their molybdenum content, the austenitic CrNiMo standard grades can be used in applications where there is an increasing demand for corrosion resistance. Well balanced material properties make them suitable for the manufacture of many products.
316L / 1.4435 has excellent corrosion resistance in solutions of many halogen-free organic and inorganic compounds over a wide temperature and concentration range. It can withstand many organic and diluted mineral acids, depending on the temperature and concentration of the solution. Supra 316L / 1.4435 can be subjected to uniform corrosion in strong mineral acids and hot strong alkaline solutions. Due to its increased molybdenum and nickel content, its performance is the best among the austenitic CrNiMo standard grades.
Better processability for modifying been PRODEC better versions using processability performance obtained is. However , Prodec is available in 4401, 4404, 4436 and 4432 as hot rolled plate and bar.
316L / 1 4435 excellent in weldability has all conventional welding methods and excluding gas source (MMA, MIG, MAG, TIG, SAW, such as LBW or RSW) is suitable for. 316L / 1 4435, compared to carbon steel of approximately 50% greater thermal expansion and a lower thermal conductivity. This means that greater deformation and higher shrinkage stresses can be caused by welding. Autogenous welding can be used in thin sections . Preferably, compatible or slightly over-alloyed fillers should be used to ensure that the weld metal properties (eg strength, corrosion resistance) are equivalent to those of the base metal.
The recommended filler metal is 19 12 3 L.
Post-weld heat treatment is generally not required. In special cases where the risk of stress corrosion cracking or fatigue is high, stress relief may be considered.
To fully restore the corrosion resistance of the weld seam, the discoloration in the weld should be removed by pickling and passivation.
Hot forming can be done in the range of 850 ° C - 1150 ° C. For maximum corrosion resistance, forgings should be annealed at 1070 ° C and quickly cooled in air or water after hot forming.