I. High Apparent Density Series (Copper-Lead Alloy Powder) Standard: Q/SJL001—2004 CuPb10Sn10 Apparent Density: ≥4.5 CuPb24Sn1 Apparent Density: ≥5.1 CuPb20Sn4 Apparent Density: ≥5.1 CuPb30 Apparent Density: ≥5.2 CuSn6.5P0.1 Apparent Density: ≥3.5 CuSn13 Apparent Density: ≥3.5 CuPb24Sn4 Apparent Density: ≥5.1 CuPb23Sn3 Apparent Density: ≥5.1 CuPb3Sn6Zn6 Apparent Density: ≥4.0 CuPb7Sn7Zn3 Apparent Density: ≥4.0 II. Low Apparent Density Series (Copper and Copper Alloy Powder) Standard: Q/SJL003—2005 Pure Copper Powder Apparent Density: 1.8～2.5 Brass Powder Apparent Density: 2.7～3.5 Copper-Tin 10 Powder Apparent Density: 2.5～3.5