Domestic QT400-18 ductile iron sheet

Material Name: Ductile Grade: QT400-18 standard: GB 1348-88 ● Features and Scope: for the ferrite ductile, has good weldability and machinability, high impact toughness at room temperature. And high ductility. Brittle transition temperature is low, while the low-temperature toughness are better. Used can withstand high shock and vibration and torsion dynamic and static load of parts requiring high toughness and ductility, especially at low temperatures requires a certain impact on the value of the parts ● Chemical Composition: Carbon C: 3.45 ~ 3.64 Si Si: 2.47 ~ 3.00 Manganese Mn: 0.45 ~ 0.57 Sulfur S: 0.012 ~ 0.026 Phosphorus P: 0.047 ~ 0.060 Mg Mg: 0.029 ~ 0.062 Rhenium Re: 0.032 ~ 0.047 ● Mechanical Properties: Tensile strength σb (MPa): ≥400 Conditions yield strength σ0. 2 (MPa): ≥250 impact toughness αkv (J / cm2): ≥18 Hardness: 130 ~ 180HB Microstructure: ferrite-related supply cast iron grades: ductile iron: QT400-15 QT400-18 QT450-10 QT500- 7 QT600-3 QT700-2 QT800-2 QT900-2 gray cast iron: HT100 HT150 HT200 HT250 HT300 HT350 cast iron MTCuMo-175 MTCrMoCu-235 in need, please contact us! Thank ----------- 15999873099