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Chromium was first isolated in its metallic form in 1797 by the French pharmacist and chemist Louis Nicolas Vauquelin who is credited with the discovery of this elemental metal. Chromium is extremely hard, corrosion resistant, and reflective. Chromium has an estimated average concentration in the earth crust of 100 ppm. It is an important component of steel, making it stronger and corrosion resistant. It is also used to electroplate metallic parts due to these properties and its beauty when polished to a high shine (think Harley-Davidson motorcycles). It is used as an additive to preserve wood and tan leather and is also used is various pigments and dyes and is a natural component some of nature's most beautiful gemstones including emeralds and rubies. Inscribed on these ingots are the chemical symbol (Cr), purity (99.9%), weight (one troy ounce), and a serial number (this number is unique and will vary). On the reverse is our logo. These ingots are lightly polished, similar to the one pictured. There can be tiny edge dings, light surface scratches, light edge grooves and other small imperfections. Weight and purity are guaranteed by Rare World Metals Mint. The metallic form of chromium that we sell is nontoxic though some chromium compounds are considered toxic and carcinogenic. As we suggest with all of our metals please keep these ingots intact and in a safe place, do not ingest, and keep out of the reach of children. Each ingot will be shipped with an assay certificate and every shipment will include our velvet logo bag. If you are not completely satisfied with any purchase from us, you have 30 days to return it for a full refund (buyer to pay return shipping). Domestic shipping is free for all orders over $99 (enter code free shipping at checkout). For orders of $99 or under, domestic shipping is $9.95. International shipping is via DHL, FedEx, or USPS international express and costs $45 for shipments up to a pound (9 one ounce ingots or less including packaging materials) and $10 for each additional pound. International customers please be aware that your country may levy import duties and/or VAT taxes on your purchase from us. We have nothing to do with this and cannot pay it for you. If you refuse our package because of this extra cost we will take it back and will refund your order in full once received minus the cost of the return shipping. If you are unsure what these import costs will be please check with your country's customs office. For more High-Purity Metal Chromiuminformation, please contact us. We will provide professional answers. https://en.wikipedia.org/wiki/Chromium http://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth%27s_crust http://www.bgs.ac.uk/mineralsuk/statistics/riskList.html
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Chromium’s claim to fame is that it is both very hard and rust proof under normal ambient conditions. For this reason it’s the magic ingredient that turns ordinary steel into stainless steel. Mother Nature has blessed this planet with bountiful chrome so miners each year pull millions of tons of it to be used in, well, basically everything that you see around you that has shiny metal bits to it.
Like diamond, chromium’s hardness comes at the cost of brittleness. When pure it is of little use besides spraying onto cheap hubcaps because it cracks and crumbles with little effort. The making of solid bars with raised relief was a considerable headache for the engineers who have made the rest of these bars; explaining why it was the rather late 41st such bar to be added to the lineup.
Contact us to discuss your requirements of Aluminium Casting Flux. Our experienced sales team can help you identify the options that best suit your needs.