Product Introduction

GGG50 ball milling cast iron with lost wax investment

The GGG50 is equivalent to the domestic QT500-7

The GGG60 is equivalent to the domestic QT600-3

QT500-7

● Characteristics and scope of application: It is ferritic ductile iron with medium strength and toughness and good machinability. At low temperature, toughness changes to brittleness, but the low temperature impact value is higher, and there is a certain temperature resistance and corrosion resistance. It is widely used in oil pump gear of internal combustion engine, medium temperature cylinder bulkhead of steam turbine, valve body of hydraulic turbine, bearing shell of railway rolling stock, transmission shaft of machine seat, etc.

● Chemical composition: Carbon C: 2.96 ~ 3.35 ductile iron plate

Silicon Si: 2.34 ~ 2.86 Manganese Mn: 0.50 ~ 0.68 Sulfur S: 0.015 ~ 0.019 Phosphorus P: 0.038 ~ 0.053

● Mechanical properties: Tensile strength σb (MPa) : ≥500 Conditional yield strength σ0.2 (MPa) : ≥320 elongation δ (%) : ≥7 Hardness: 170 ~ 230HB

● Heat treatment specification and metallographic structure: Heat treatment specification: (determined by the supplier, the following is the heat treatment specification for a sample, for reference) 920℃, annealed metallographic structure: ferrite + pearlite

QT600-3

Material name: Ductile iron Grade: QT600-3 Standard: GB 1348-88

● Characteristics and scope of application: pearl-shaped ductile iron, with medium and high strength, medium toughness and plasticity, high comprehensive performance, good wear resistance and vibration absorption, good casting process performance and other characteristics. Its properties can be changed by various heat treatments. Mainly used in various power machinery crankshaft, camshaft, connecting shaft, connecting rod, gear, clutch plate, hydraulic cylinder and other parts

● Chemical composition: Carbon C: 3.56 ~ 3.85 Silicon Si: 1.83 ~ 2.56 Manganese Mn: 0.49 ~ 0.70 Sulfur S: 0.016 ~ 0.045 Phosphorus P: 0.035 ~ 0.058 Magnesium Mg: 0.041 ~ 0.067 Note: RxOy:0.033 ~ 0.049

● Mechanical properties: Tensile strength σb (MPa) : ≥600 Yield strength σ0.2 (MPa) : ≥370 Elongation δ (%) : ≥3 Hardness: 190 ~ 270HB

● Heat treatment specifications and metallographic structure: Heat treatment specifications: (Determined by the supplier, the following is the heat treatment specification of a sample, for reference) 930℃, 2h normalizing air cooling, 600℃, 2h tempering air cooling metallurgical structure: pearlite + ferrite

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