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https://www.ganoksin.com/article/platinum-alloy-applications-for-jewelry/
It is ductile and malleable and an overall great alloy. 900/100 Platinum / Iridium has a Vickers hardness of 110, a density of 21.5 and a melting range Liquidus/Solidus of 1800°C-1780°C. Pt/lr 950/50
https://www.georgianjewelry.com/blog/iridium-platinum-explained
Iridium Platinum Explained. Since about 1900, platinum came into use in a major way in the making and manufacturing of jewelry. This ushered in the Edwardian era, known for its exceptionally fine yet durable lace-like platinum work. As with most metals for jewelry, they are often combined with other metals to help the metalsmith or jeweler ...
https://www.hcrosscompany.com/precious-metals-and-alloys/platinum-iridium/
Other uses of platinum iridium alloys include electrical contacts, spark plugs, electro explosive devices, medical leads and electrodes, thermistors, catalytic applications, jewelry, pen points, surgical pins or pivots and the kilogram and meter standards used by the department of weights and measures. Fabrication and Forms
https://platinumjewelry.com/why-platinum/pure/
It’s also the only platinum alloy that can simply bear the “Platinum” stamp to identify that it’s 95% pure platinum. Other common metals that comprise the remaining 5% are iridium, ruthenium or cobalt. Another platinum alloy that’s popular in the United States contains 900 parts platinum to 100 parts other metals. The stamp for this ...
https://www.mgsrefining.com/blog/2015/10/01/ruthenium-vs-iridium-in-platinum-alloys/
Oct 01, 2015 · Generally, 950 platinum-iridium alloy is soft and malleable. This makes it easy to work with, but it’s vulnerable to dents, scratches, and deformation. So while it’s great for hand fabrication and small pieces of jewelry, it doesn’t hold up well over time. 950 Platinum-ruthenium alloy is the opposite. It’s resistant to wear and tear ...
https://www.americanelements.com/platinum-iridium-alloy-37186-87-1
About Platinum Iridium Alloy. American Elements manufactures Platinum/Iridium Alloys in varying compositions such as Pt90/Ir10, Pt80/Ir20 , Pt75/Ir25 , and Pt70/Ir30. AE Alloys™ are available in numerous machined shapes such as bar, ingot, ribbon, wire, shot, sheet, and foil, in various dimensions.
https://www.reddit.com/r/jewelry/comments/ofiqtj/need_advice_on_platinum_alloys/
Then I read up on platinum alloys and asked the seller what she uses. She uses a 95% platinum 5% iridium alloy which I have read is too soft to handle the abuse of an everyday ring. She is unable to use another alloy and assures me it will be durable. I inquired with a well-known online jewelry brand and was surprised to hear they use the same ...
https://en.wikipedia.org/wiki/Platinum-iridium_alloy
Platinum-iridium alloy. The international prototype of the kilogram (IPK) is an artifact standard of platinum-iridium alloy that was defined as having a mass of exactly one kilogram. Platinum-iridium alloys are alloys of the platinum group precious metals platinum and iridium . Typical alloy proportions are 90:10 or 70:30 (Pt:Ir).
https://orchid.ganoksin.com/t/platinum-rings-which-alloy-is-best/28533
alloys which are more or less either not following the international (?) standards of platinum jewelry or the hardness in Vickers is not substantially better than Plat/Palladium. I’m leaning towards the combo : Plat 950/Iridium 50. Is this a good alloy? My future wife wishes to put a diamond stone in it later on, and I
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