6CrNiMnSiMoV (GD) round steel 

 Chemical composition: standard C Si S sulfur P phosphorus Mn Cr the chromium Mo Ni V Vanadium W Tungsten Cu Copper Al Aluminum Co cobalt factory state: Hardness: of HRC HB HV physical properties: Density: Melting point: elastic modulus: heat conductivity: Hardness: thermal expansion coefficient: μ m / m ° C mechanical properties: tensile strength σb (MPa): yield strength σs (MPa): the elongation δ5 (%): Reduction of the rate of ψ (%): the impact energy Akv (J): the impact of the toughness the value αkv (J/cm2): Approx Service Temperature: Main features: use example: thermal processing methods: melting point: the beginning of forging: forging the end: tempering: normalizing: annealing: standardized heat treatment: quenching : the first ℃, second ℃, water-cooled, oil cooler; tempering ℃, oil cooling, air cooling. The company specializes in various kinds of imported tungsten steel, high-speed steel, titanium, stainless steel, copper alloys, aluminum alloys, die steel, tool steel, special steel sales promotion and after-sales service hotline :021-57,888,255; Fax :021-57,888,225; Phone: 15221352988