High purity silicon metal powder is a heat-resistant and refractory material. Different clients have different requirements on specifications. We can supply according to client's requirements. The following are some examples. Example 1: 1) Si (silicon): 99.95% min. 2) Fe (iron): 500ppm max. 3) Ni: 0.01% max. 4) Cr: 0.01% max. 5) Cu: 0.01% max. 6) Ca: 0.01% max. 7) Oxygen: ?5,500ppm 8) Size: 36 - 100? m with following distribution: a) < 36? m: 5% max. b) 100? m: 5% max. c) < 63? m: 40% max. Example 2: 1) Si: 99.95% min. 2) Fe: 300ppm max. 3) O (oxygen): 5,500ppm max. 4) Size: a) 140 - 200 mesh: i) > 200 mesh: 5% max. ii) <140 mesh: 5% max. b) 100 - 140 mesh: i) > 140 mesh: 5% max. ii) <100 mesh: 5% max. Example 3: 1) Si: 99.98% min. 2) Fe: 300ppm max. 3) O (oxygen): ?3,000ppm 4) Al (aluminum): 200ppm max. 5) Ti (titanium): 50ppm max. 6) Size: -125 + 45? m a) > 125? m: 5% max. b)
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