Zirconium exhibits excellent resistance to corrosion in most organic and inorganic solutions.Shenzhen Sunrise Metal Industry Co.,Ltd

Zirconium exhibits excellent resistance to corrosion in most organic and inorganic solutions.

Shenzhen Sunrise Metal Industry Co.,Ltd

TEL：0086-0755-27185042 
Website：http://www.sunriseta.com
E-Mail：sales@sunriseta.com

Properties

Zirconium is a reactive metal; it has a high affinity for oxygen and as such forms a protective oxide film that enables it to perform well in a wide variety of conditions.
Atomic No. 40
Atomic Wt. 91.22
Specific Gravity 6.51
Melting Point 1852˚C
Coefficient of Thermal Expansion 5.8 X 10-6/°K
Specific Heat 0.066 cal/g/°K
Ultimate Tensile Strength (Room Temperature, Annealed) 55 ksi
Yield Tensile Strength (Room Temperature, Annealed) 30 ksi
Poisons Ratio 0.35
Modulus of Elasticity 14.4 X 106 psi
Stress Relief Temperature 565˚C

General Corrosion Resistance

Zirconium exhibits superb corrosion resistance in most organic and inorganic acids, salt solutions, strong alkalis and a few molten salts. The passive oxide film (corrosion barrier) is stable in both reducing and oxidizing conditions. Zirconium is excellent in both acidic and basic solutions. The temperature limit for use in air is about 450˚C to 500˚C.

This data is based on laboratory testing only. Your in-plant results may differ. Testing is recommended under other conditions as needed.

Zirconium is a reactive metal that owes its corrosion resistance to the formation of a chemically inert, tenaciously adherent oxide film. It is particularly resistant to reducing acids and strong alkalis. It is also resistant to strong nitric acid, some molten salts and is used in heat exchangers, valves, piping, reactor vessels, tanks, pumps, tower packing and laboratory equipment.

Zirconium is our most effective crucible material for fusions using sodium carbonate or sodium peroxide. It is an excellent low-cost replacement for platinum. And, based on an average of 100 fusions per crucible, it is more cost effective than less expensive porcelain or steel crucibles. The major use of zirconium remains in the nuclear reactor arena. The thermal neutron capture cross-section is extremely low so the metal acts as a window to these particles. It also exhibits good corrosion resistance to the aqueous media within the operational nuclear reactor.

Corrosion Resistance Table

Zirconium's resistance to corrosion by many materials is exemplified in the following table.  

	Solution	Concentration in Weight %	Temperature in °F	Corrosion Resistance(mpy)
	Acetaldehyde	100	Boiling	2
	Acetic Acid	5, 25, 50, 75, 99.5	Boiling	1
	Acetic Acid	Vapor - 33	Boiling	5
	Acetic-Glacial Acid	99.7	Boiling	5
	Acetic Anhydride	99	Room to Boiling	2
	Aluminum Chloride (Aerated)	5, 10	140	2
	Aluminum Chloride	40	212	2
	Aluminum Chloride	25	Room	2
	Aluminum Sulfate	60	212	2
	Ammonia	Plus Water	100	5
	Ammonium Chloride	1, 40	212	5
	Ammonium Hydroxide	28	80	5
	Ammonium Sulfate	5, 10	212	5
	Aniline Hydrochloride	5, 20	212	5
	Aqua Regia	3:1	170	50
	Barium Chloride	5, 20	212	5
	Barium Chloride	25	Boiling	5 to 50
	Bromine	Water	Room	50
	Calcium Chloride	5, 10, 20	212	5
	Calcium Chloride	75%	Boiling	5
	Calcium Hyprochloride	2, 6, 20	212	5
	Calcium Hyprochloride	Saturated	Room	5 to 50
	Carbolic Acid	Saturated	212	5
	Carbon Tetrachloride	Liquid	Boiling	5
	Chlorine (Water Saturated)		Room	50
	Chlorine (Water Saturated)		167	50
	Chlorine Gas (> 0.13% H,0)	100	200	50
	Chlorine Gas (Dry)	100	Room	5
	Chloracetic Acid	30	180	5 to 50
	Chromic Acid	10 to 50	Boiling	1
	Citric Acid	10, 25, 50	212	1
	Cupric Chloride	20, 40, 50	Boiling	50
	Cupric Cyanide	Saturated	Room	50
	Dichloroacetic Acid	100	212	5 to 50
	Dichloroacetic Acid	100	Boiling	5 to 50
	Ethylene Dichloride	100	Boiling	5
	Ferric Chloride	5, 10, 20, 30	Room	50
	Ferric Chloride	5, 10, 20, 30	212	50
	Ferric Chloride	5, 10, 20, 30, 40, 50	Boiling	50
	Fluboric Acid	Not Recommended
	Fluorosilicic Acid	Not Recommended
	Formic Acid	10, 25, 50, 90	212	1
	Formic Acid (Non-Aerated)	25	212	5
	Formic Acid (Aerated)	10-90	212	5
	Formic Acid (H2O Soution)	9	125	5
	Hydrobromic Acid	40	Room	50
	Hydrobromic Acid	5	Room	1
	Hydrobromic Acid	10	95	5
	Hydrobromic Acid	20	95	5
	Hydrobromic Acid (Aerated)	5	95	5
	Hydrochloric Acid (Aerated)	10	95	5
	Hydrochloric Acid (Aerated)	20	95	5
	Hydrofluoric Acid	(All) Do not use!	Dissolves Readily
	Hydrogen Peroxide	50	212	2
	Hydroxyacetic Acid		104	5
	Lactic Acid	10-100	300	1
	Magnesium Chloride	5-40	212	5
	Manganous Chloride	5-20	212	2
	Mercuric Chloride	1, 5, 10, 55	212	1
	Mercuric Chloride	Saturated	Room	1
	Mercuric Chloride	Saturated	200	1
	Nickel Chloride	5-20	212	1
	Nitric Acid	10, 20, 40, 69, 75	500	1
	Nitric Acid	65, 75	Boiling	1
	Oxalic Acid	All concentrations	212	1
	Phenol (Carbolic Acid)	Saturated	Room	5
	Phosphoric Acid	5-3	Room	5
	Phosphoric Acid	35-50	Room	5
	Phosphoric Acid	85	100	5 to 20
	Phosphoric Acid	5-3.5	140	5
	Phosphoric Acid	5-50	212	5
	Potassium Chloride	Saturated	Room	5
	Potassium Hydroxide	10	Boiling	1
	Potassium Hydroxide	25	Boiling	1
	Potassium Hydroxide	50	Boiling	5
	Silver Nitrate	50	Room	5
	Sodium Chloride	29	Boiling	1
	Sodium Chloride	Saturated	Room	1
	Sodium Chloride	Saturated	Boiling	1
	Sodium Hydroxide	10, 25	Boiling	1
	Sodium Hydroxide	28	Room	1
	Sodium Hydroxide	40	212	1
	Sodium Hypochlorite	6	212	5
	Stannic Chloride	5	212	1
	Stannic Chloride	24	Boiling	1
	Sulfuric Acid (Aerated)	1-60	212	5
	Sulfuric Acid (Air-Free)	15	Room	20
	Sulfurous Acid	6	Room	5
	Sulfurous Acid	Saturated	375	5 to 50
	Tannic Acid	25	212	1
	Tartaric Acid	10-50	212	1
	Tartaric Acid	10, 25, 50	140	1
	Tetrachloroethane (Water Mix)	100	Boiling	5
	Trichloroacetic	100	212	50
	Trichloroacetic	10-40	Room	2
	Trichlorethylene	99	Boiling	5
	Trisodium Phosphate	5, 20	212	5
	Zinc Chloride	10	Boiling	5
	Zinc Chloride	20	212	5
Mpy = mil. per year - 1 mil. = .001 inches