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Copper Sulfate for Passivation Test

SKU:
RXSOL-38-6116-500
Available Packing Sizes: 

The copper sulfate test is used to detect the presence of metallic iron and iron oxide on the surface of materials.

Question - What solution strength is needed to copper sulfate solution can be used to determine if a metal is stainless steel or just steel ? 
Answer    - Copper sulfate (CuSO4*5H2O) + H2SO4 (anywhere from 1% to 50% is specified in various test methods).

Detect the presence of metallic iron and iron oxide. Chromium and nickel will not be replaced with the Copper sulfate test solution, forming the distinctive copper color on the surface in this 6 minute test.

Product Application: 

How does copper sulfate test for passivation work?

ANSWER : Chromium and nickel will not be replaced with the Copper sulfate test solution (which also contains sulfuric acid), only the Fe or other less noble metals. If there is free iron on the surface it will be replaced by the copper, forming the distinctive copper color on the surface in this 6 minute test. Of course, this test should only be used on austenitic stainless steel. Some people use it on other grades, but you can get false failures.

 

 

Click here for PASSIVATING LIQUID technical information , to know Other testing methods for PASSIVATION , Passivation Method

Product Dose: 

Spray the surface with a solution of copper sulfate in water. If free iron is present, a copper film will form. In this test, the chemical reaction is:

 Fe + CuSO4 = FeSO4 + Cu
The copper film is immediately visible.
 

Copper sulphate test: a galvanic type test in which the more noble copper plays upon less noble iron particles but not on SS.  Patches of copper sulphate shows a poorly passivated surface. Passivated parts are immersed in a Copper Sulfate solution for five minutes, rinsed and visually examined. Any copper (pink) color indicates the presence of free iron and the test is considered unacceptable.

Ferroxyl test: causes coloured iron compounds to appear as specks.

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Copper Sulfate for Passivation Test manufacturer supplier distributor in Mumbai, Kandla, Kolkata, Vizag, Chennai, India, Fujairah, Dubai, Sharjah, UAE, Gulf, Middle East, Muscat Oman, Kenya Africa. Get the best quality of Copper Sulfate for Passivation Test at a competitive price from us. We have ready stock of Copper Sulfate for Passivation Test in India, UAE Gulf, Oman, Kenya Africa. Contact us for bulk as well as small orders.

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We are one of largest marine chemical manufacturing company in Asia. Our specialization in marine, oil field, shipping industry. Since 1995 our group team continiously developing our product to achieve best in quality and services. Specially in shipping industries we make our position on TOP among all supplier. All shipchandler and shipping company of UAE - Middle East are well known to us and DUBI CHEM Marine International have more then 1800 global regular client to achieve our monthly target more then 360 MT .   DUBI Chem Marine International have very strong distribution network as well in INDIA also to complete supply directly on ship vessel -  http://www.westindiachemical.com/ (Kandla,Mundra,Sikka) ,  http://marinechemical.in/ (Mumbai,JNPT,Goa,Manglore) , http://www.vizagchemical.com/ (Vizag-Visakhapatnam,Gangavaram) , http://ennoreindiachemical.com/ (Chennai,Ennore,Kochin) , http://eastindiachemicals.com/ ( Kolkata, Haldia, Paradip ) etc... For INDIA supply directly mail us on rxmarine@gmail.com or feel free to call us 0091-9821214367 ...
 

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