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Metal Technology, Inc. 173 Queen Ave SE, Albany, Oregon 97322 U.S.A. 1-800-394-9979 |
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Tantalum's resistance to corrosion by many materials is expemplified in the following Corrosion Resistance Table.
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Corrosion Resistance of Tantalum |
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SUBSTANCE |
REACTION | |
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Acetic Acid |
20-392° (68-738°F), all concentration: No attack |
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Air or Oxygen |
At room temperature: practically
stable Above 600°C (1112°F): formation of protective surfaces of Ta oxides |
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Aqueous Ammonia |
Proactically no attack | |
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Aqua Regia |
Cold and hot: practically no attack | |
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Carbon (Graphite) |
At high temperatures: carbide formation | |
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Carbon Dioxide |
Above 1200°C (2912°F): oxidation | |
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Carbon Monoxied |
At red heat: reaction (absorption
of C and O) In high vacuum above 1400°C: formation of CO |
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Chromic Chloride Acid |
20-100°C (68-212°F), concentrated: no attack | |
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Aqueous Caustic |
Cold: practically stable Hot: noticeable attack |
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Molten Caustic |
Stable | |
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Chlorine |
at 250°C (464°F): beginning
attach Above 450°C (842°F): violent reaction |
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Ferric Chloride |
19°C (66°F) Boiling, 5-30% concentration: no attack | |
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Hydrocarbons |
Above 800-1000°C (1472-1832°F):
carbide formation Above 1400°C (2552°F): complete carburizing |
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Hydrochloric Acid |
Cold and Hot: no attack | |
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Hydrofluoric Acid |
Strong Attack | |
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Hydrofluoric and Nitric Acid |
Rapid dissolution | |
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Hydrogen |
Above 300-400°C (572-752°F):
formation of hydride Above 1000°C (1832°F): very slight solubility of hydrogen In high vacuum above 600-700°C (1112-1292°F): evolution of hydrogen |
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Hydrogen Peroxide |
Concentrated: good resistance to attack | |
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Hydrogen Sulfide |
At red heat: sulfide formation | |
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Nitric Acid |
Cold and Hot: no attack | |
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Nitrogen |
Up to 150°C (302°F): no
attack Above 800°C (1472°F): nitride formation |
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Oxalic Acid |
20-96°C(68-205°F), saturated: no attack | |
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Phosphoric Acid |
85% concentration, 145-210°C (293-410°F): no attack | |
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Potassium Hydroxide |
110°C (230°F), 5% concentration: no attack | |
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Sodium Hydroxide |
100°C (230°F), 5% concentration:
no attack 100°C (230°F), 40% concentration: rapid attack |
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Steam |
at red heat: rapid oxidation | |
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Sulfur Dioxide |
Up to 300°C (572°F): stable | |
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Sulfuric Acid |
Cold and hot: no attack | |
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Molten Metals: |
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Sodium |
Up to 1200°C (2192°F): resistant | |
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Magnesium |
Up to 1150°C (2102°F): resistant | |
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Lithium, Potassium, Lead |
Up to 1000°C (1832°F): resistant | |
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Bismuth |
Up to 900°C (1652°F): resistant | |
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Mercury |
Up to 600°C (1112°F): resistant | |
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Zinc |
Up to 500°C (932°F): resistant | |
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Gallium |
Up to 450°C (842°F): resistant | |
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Refractory Oxides: |
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Alumina |
Up to 1900°C (3452°F): stable | |
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Beryilla |
Up to 1900°C (2912°F): stable | |
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Magnesia |
Up to 1800°C (3272°F): stable | |
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Zirconia |
Up to 1600°C (2912°F): stable | |
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Thoria |
Up to 1900°C (3452°F): stable | |
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| Home Corrosion Resistance Metals Custom Products Scientific & Laboratory Products About Us Contact Us Request a Quote Technical Inquiry form | |
|
Metal Technology, Inc. 173 Queen Ave SE, Albany, Oregon 97322 U.S.A. 1-800-394-9979 |
|