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Good morning everyone. It’s Michael with Michlin Metals back again to talk about what? Well today, we’ll be talking about NICKEL! If you are watching and haven’t subscribed, take a second, click that little MMI button right here and subscribe. I’ve noticed about only 8% of the viewers have subscribed who watch, if you’re one of the 92% try to help me out and click that button. Thank you and now onto Nickel! 

Well, today’s topic is  focused  on wrought Nickel metal ….things commercially available as bars, forgings, tubing, and plate products.

Commercially pure Nickel 200 or generic alloy 200 has a UNS  (Unified Numbering System) chemistry designation UNS N02200.

It contains a minimum of 99.0% Nickel (plus cobalt) with other elements restricted …….carbon to a MAXIMUM   of point 15 % ; iron to point 40 %; copper  to point 25%; manganese to point 35%; silicon to point 35; and sulfur to point 01%.

Of note here is that we said that there can be some cobalt included in the required minimum percentage of nickel. Because they are found together in the ores they are produced from;  there is higher cost in separating the two elements to greater degrees.

Metallurgically similar in many ways, allowing “nickel plus cobalt” when possible is a matter of cost. Cobalt would be in the  restricted elements if it were an issue in the performance of the alloy. The lower a cobalt content in a nickel alloy  the  higher the cost of the raw materials to produce it.

Nickel has excellent magnetic properties, high thermal and electrical conductivity.

It is easily fabricated by any of the methods used for steels and it is not hardenable by heat treatment.

It has excellent corrosion resistance to atmospheric and marine environments as well  as caustic alkalies and reducing chemicals.

Examples of applications are found in food handling equipment, chemical processing,  and heating or cooling equipment in corrosive environments.

Relatively high thermal and electrical conductivity are useful for electronic and aerospace applications.

Nickel can be used in food handling equipment where heating and cooling take advantage of the ability to transfer heat much better than the 300 series stainless steel.

Generally limited to applications below 600 degrees  F ….. at higher temperatures the low carbon content type 201 should be used to minimize graphitization

UNS N02201 has carbon reduced to point 02% maximum from the point 15% maximum of type 200 and extends the useful maximum temperature up to 1250 degrees F

Specifications for the Nickel alloys are in the ASTM B series and in the ASME SB series for boiler and pressure vessel code applications.   As we always say……  Check the  specs!

Next up in this series of nickel alloys are the nickel copper alloys….   Monel or alloy 400, 405, and K500.

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Thank you for watching, this is Michael with Michlin Metals.