Recommend an alloy that we have studied for use in each of the following environ

Question

Recommend an alloy that we have studied for use in each of the following environments or in applications involving the following chemicals. Remember dollars count; don't use gole if steel will do the job. (a) High strength tools to be used in a potentially explosive environment. (b) Hydrogen peroxide (high concentration) (c) High purity water (d) Acetic acid (all concentrations and temperatures) (e) Surgical or dental implants (f) Caustic evaporators (g) Dilute sulfuric acid (h) Food and/or beverage processing (i) A highly stressed part in a chloride containing solution (j) Underground (k) Marine industrial atmosphere (l) Wet halogens (m) HF (n) Reducing conditions (o) Oxidizing conditions (p) HCI (all concentrations and temperatures)

Explanation / Answer

C Food & Bevarages For food storage Tin Platic or glass can be use because of non corrosive properties

                              for food manufacture Aluminium or SS304 (has good corrosion resistance even at high temp.)

b Hydrogen peroxide (high conc) SS316 or SS317 is generally corrosion resistant.Polythene can also be used

d Acetic Acid SS316 or SS317 is generally corrosion resistant. Polythene can also be used

e Surgical or dental implants   are major constructed from Zirconium, Titanium, SS, Titanium alloy

Zirconium implants are white and they easily blend with teeth. Titanium implants are silver black and in four grades dependingon amount of SS. Titanium alloy implants are implants made by mixing titanium and vanadium and these have alloy good stength and durability

f Caustic Evaporators material used can be Steel clad with nickel or monel

Steel clad with nickel extensively in production of caustic soda and alkalis

monel contains 67% nickel & 30% Copper, it impaarts superior resistance to non oxidizing chlorides alkalis

K Marine industrial atmosphere       Austenitic Stainless steel. Austenitic Stainless steel   mainly contains iron, nickel 6 to 22% and chromium 16 to 26%. AISI 300 series, are widely used in chemical industries anh form 70% consumption of SS. They have much better corrosion resistance. These material show a high corrosion resistance even under as welded condition.

please read about Austenitic Stainless steel it grade of steel most suited for chemical industries

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