Metals:
Titanium
Zirconium
Tantalum
Niobium
Nickel based alloys

 

 

 

Titanium

 Titanium is the fourth most plentiful metal on earth; Australian rutile ore (TiO2)
 Titanium is 1/2 as dense as steel - 0.163 lbs./cu. in.
 Similar in strength to 316 SS - 50ksi Min. UTS
 Excellent corrosion resistance, especially C1's
 Suitable Environments:
Wet Chlorine
Chlorinated Compounds
Oxidizing Acid
Sea Water
Most Organic Chemicals
Compatible with body fluids
 Maximum Process Temperature 600º F (315º C)
 Major grades (Ti-2, Ti-7, Ti-12, Ti-16 & Ti-26)

Zirconium

 Zirconium is the 9th most common metal on earth; Zr/Hf sands are readily available throughout the world
 Zirconium is 80% of the density of steel: .0235 lbs/ cu. in.
 55ksi Min. UTS
 Excellent corrosion resistance to reducing acids
 Major Zirconium grades:
Zr-702
Zr-705
 Suitable Environments:
Strong acids-both oxidizing and reducing
Strong Caustics
Salt Solutions
Sea Water
Most Organic Environments
 Maximum Process Temperature 700º F (371º C)

Tantalum

 Tantalum comes from tin mines as a K2TaF7 ore
 Tantalum is 2x as dense as steel - 0.6 lbs/cu. in.
 Ta is a soft ductile metal
Ta: 25ksi UTS
Ta 1 1/2% W: 40 ksi UTS
 Tantalum has the best corrosion resistance of any metal
 Major tantalum grades:
Pure Ta
Ta w/ 2 1/2% tungsten alloy
Ta 10% tungsten alloy
Ta 40% tungsten alloy
 Suitable Environments:
Inert to nearly all organic & inorganic compounds
Except hydrofluoric & strong alkalis
HCL Acid (boiling to 32%)
H2SO4 Acid (boiling to 72%)
Acetic Acid
HNO3 Acid
 Maximum Process Temperature 500º F (260º C)

Niobium

 Poor man's tantalum
 Niobium is 1/2 as dense as Tantalum - 0.31 lbs/cu.in.
 Strength similar to Ta 30ksi Min. UTS
 Similar corrosion resistance as Ta; Excellent in high concentration HNO3
 Suitable Environments:
Similar to Tantalum except that is should not be used in sulfuric acid
Used in bromine operations
Excellent for 98% fuming HNO3 Acid
 Maximum Process Temperature 300º F (149º C)


Nickel Based Alloys

 Densities: 0.297 to 0.33 lbs/cu.in.
 Strength: 100-120 ksi min. UTS
 Major grades: B-2, B-3, C-22, C-276, C-2000, G-3,and G-30
 Suitable Environments:
"B" Alloys-Reducing Acids
"C" Alloys - Oxidizing Acids
"G" Alloys - Phosphoric and Acetic Acids
 Maximum Process Temperature
"B" Alloys - 800º F (427º C)
"C" Alloys - 1250º F (676º C)
"G" Alloys - 800º F (427º C)