... rod's surface is of metallic lusterand no significant oxidation. 2. According to the different chemical composition and use, grades are ... electrode, export lines, heating and other electronic components. GMHI. M, 2, GMHYM. 3 is for the manufacture of tubes, electric light ... 100-600MM×LGB3876/ASTM B386-91melting point 2617°Cdensity;10.2 g/cm3vacuum coating;all-electric melting and electric boosting ...