Log in or Sign up
Antiques Board
Home
Forums
>
Antique Forums
>
Jewelry
>
Need Help With Age & Origin of Art Deco/Nouveau?? Rhinestone Necklace
>
Reply to Thread
Message:
<p>[QUOTE="Joan, post: 8304224, member: 5398"]Thank you Obb. Nickel silver isn't pure nickel. According to Britannica.com, nickel silver is a range of alloys of <a href="https://www.britannica.com/science/copper" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.britannica.com/science/copper" rel="nofollow">copper</a>, <a href="https://www.britannica.com/science/nickel-chemical-element" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.britannica.com/science/nickel-chemical-element" rel="nofollow">nickel</a>, and <a href="https://www.britannica.com/science/zinc" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.britannica.com/science/zinc" rel="nofollow">zinc</a> which are silvery in appearance but contain no <a href="https://www.britannica.com/science/silver" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.britannica.com/science/silver" rel="nofollow">silver</a>. Its <a href="https://www.merriam-webster.com/dictionary/composition" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.merriam-webster.com/dictionary/composition" rel="nofollow">composition</a> varies from 7 to 30 percent nickel, the <a href="https://www.britannica.com/technology/alloy" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.britannica.com/technology/alloy" rel="nofollow">alloy</a> most widely used being 18 percent nickel silver (18 percent nickel, 62 percent copper, 20 percent zinc). In general the zinc content is lowered as the nickel is increased, the copper content varying between 53 and 63 percent.</p><p><br /></p><p>This is what Wikipedia says about pot metal: There is no metallurgical standard for pot metal. Common metals in pot metal include zinc, lead, copper, tin, magnesium, aluminium, iron, and cadmium. The primary advantage of pot metal is that it is quick and easy to cast. Because of its low melting temperature, it requires no sophisticated foundry equipment or specialized molds.[/QUOTE]</p><p><br /></p>
[QUOTE="Joan, post: 8304224, member: 5398"]Thank you Obb. Nickel silver isn't pure nickel. According to Britannica.com, nickel silver is a range of alloys of [URL='https://www.britannica.com/science/copper']copper[/URL], [URL='https://www.britannica.com/science/nickel-chemical-element']nickel[/URL], and [URL='https://www.britannica.com/science/zinc']zinc[/URL] which are silvery in appearance but contain no [URL='https://www.britannica.com/science/silver']silver[/URL]. Its [URL='https://www.merriam-webster.com/dictionary/composition']composition[/URL] varies from 7 to 30 percent nickel, the [URL='https://www.britannica.com/technology/alloy']alloy[/URL] most widely used being 18 percent nickel silver (18 percent nickel, 62 percent copper, 20 percent zinc). In general the zinc content is lowered as the nickel is increased, the copper content varying between 53 and 63 percent. This is what Wikipedia says about pot metal: There is no metallurgical standard for pot metal. Common metals in pot metal include zinc, lead, copper, tin, magnesium, aluminium, iron, and cadmium. The primary advantage of pot metal is that it is quick and easy to cast. Because of its low melting temperature, it requires no sophisticated foundry equipment or specialized molds.[/QUOTE]
Your name or email address:
Do you already have an account?
No, create an account now.
Yes, my password is:
Forgot your password?
Stay logged in
Antiques Board
Home
Forums
>
Antique Forums
>
Jewelry
>
Need Help With Age & Origin of Art Deco/Nouveau?? Rhinestone Necklace
>
Home
Home
Quick Links
Search Forums
Recent Activity
Recent Posts
Forums
Forums
Quick Links
Search Forums
Recent Posts
Gallery
Gallery
Quick Links
Search Media
New Media
Members
Members
Quick Links
Notable Members
Registered Members
Current Visitors
Recent Activity
New Profile Posts
Menu
Search
Search titles only
Posted by Member:
Separate names with a comma.
Newer Than:
Search this thread only
Search this forum only
Display results as threads
Useful Searches
Recent Posts
More...