Guide on 347 Stainless Steel Sheet

347 stainless steel sheet

Sulfuric, phosphoric, hydrochloric, and acetic acids are continuously and irregularly exposed to chemical processes and constructed equipment components. Components must be able to survive both corrosive conditions and high temperatures in such a harsh operating environment. Depending on the type of stainless steel used for heat exchangers and storage tanks made from manufactured plates, some are immune to chemical attacks at low or moderate concentrations but are attacked at greater concentrations. Selecting the proper stainless steel type can mean the difference between a failed procedure and a completely reliable product.

High-performance stainless steel Type 347 ensures maximum effectiveness even in challenging operating settings. In that, both types of stainless steel were created especially for frequent intermittent exposure to application temperatures above 800°F and up to 1650°F and for corrosion resistance, 347 stainless steel sheet, as a modification of 304 stainless steel, is comparable to type 321 stainless steel.

After being exposed to temperatures in the chromium carbide precipitation range of 800- 1500°F, 347 stainless steel sheet is resistant to intergranular corrosion due to the stabilizing columbium present in it. Comparable to 304 stainless steel, type 347 exhibits good all-around corrosion resistance. As 304 stainless steel is susceptible to intergranular attack after exposure above 800°F, this is especially advantageous for high-temperature processes.

Available Finishes of 347 SS Sheets

# 1: Hot-rolled, annealed, and descaled. It comes in ribbon, foil, and strip form. Applications where a smooth decorative finish is not required call for its utilization.

# 2D – Cold rolling, annealing, and descaling provide a dull finish. used for deep-drawn components and components that require lubrication during the forming process.

# 2B: Cold rolling, annealing, and descaling provide a smooth finish. After annealing with polished rolls, a short cold rolling pass is added to give it a brighter finish than 2D.

#BA: Cold rolled and brilliant annealed in the following manner. CBA stands for coarse bright annealed cold rolled matte finish.

Applications of 347 SS Sheets

  • Jet engine components
  • Annealing box lids
  • Collector rings and airplane exhaust stacks.
  • bellows, flexible metal hose.
  • Fasteners, expansion joints, and tubing.


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