92% alumina grinding balls test report Mohs hardness 9 exporter of alumina balls China origin, good quality

1. ZIBO UNION TRADING CO., LTD.
ADD: Rm. 0624 YuLong Building, Zhangdian District, Zibo City-255000, Shandong, China.
Tel.: 0086-533-2727-725 Fax: 0086-533-2727-735
Test Report
Product 92% Alumina Grinding Balls Test Report No. 2017HM-0105-1
Supplier ZIBO UNION TRADING CO., LTD.
Tested for FOB Qingdao Brand HuaMing
Specifications
Test Items
Dia. 30mm Dia. 40mm Dia. 50mm Dia. 60mm
Specific density 3.65 gr/cm3
Porosity 0.001%
Mohs hardness 9
Hardness (Rockwell) 80
Compression Resistance 21-22.000 Kp/cm2
Flexion Resistance 3.200-3.400Kp/cm2
Elasticity 2.7-2.8x106
Kp/cm2
Impact Resistance 8 Kp-cm/cm2
Color white
Chemical composition
Al2O3 92 %
SiO2 5.62 %
MgO 0.60 %
CaO 1.48 %
Na2O 0.10 %
K2O 0.10 %
Standards JC/T848.2-1999
Note Wet grinding, for ceramic tiles production purpose.
Inspected by: Wang Yi
Date: Jan. 05, 2017