Rare Earth Numbers

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• Frequently Asked Questions

• Who is USA Rare Earth?

  USA Rare Earth specializes in large range of critical heavy rare earth elements and high-tech metals. USA Rare Earth is a privately-owned that provides industrial mineral projects located in Hudspeth County, Texas.

• What percentage of rare earth products are mixed rare earths?

  Most commercial products are mixed rare earth concentrates, accounting for approximately 95% of usage.

• Where do rare earth oxides come from?

  World production in 2013 of rare earth oxides was 110,000 tonne, with main production from China of 100,000 tonne, USA at 4,000 tonne and Australia at 2,000 tonne, mainly from the Mount Weld deposit in Western Australia.

• What are the applications of rare earth metals?

  The production of mischmetal is the oldest application of rare earths. This alloy, composed of 51–53% Ce, 22–25% La, 15–17% Nd, 3–4% Pr, 2–3% Sm, 3% Tb, 3% Y and 5% Fe, has metallurgical applications in the production of high-strength, low-alloy (HSLA) steel, high carbon steel, superalloys, stainless steel and armour plate.

• What are the grades of rare earth magnets?

  Rare earth magnets have a holding power, expressed in pounds. Neodymium iron bore (NdFeB) is a type of neodymium rare earth magnet that has a permanent holding. Rare earth magnets come in various grades such as N52, N42, and N45 . Gauss rating of neodymium magnets determines the speed that the magnets work, and is a magnetism measurement of strength.