Phosphor Bronze VS Silicon Bronze

Difference Between Phosphor Bronze and Silicon Bronze

Phosphor Bronze

This alloy typically has a tin content ranging from 0.5% to 1.0%, and a phosphorous range of 0.01% to 0.35%. These alloys are notable for their toughness, strength, low coefficient of friction, high fatigue resistance, and fine grain.  The tin content increases the corrosion resistance and tensile strength, while the phosphorous content increases the wear resistance and stiffness. Some typical end uses for this product would be electrical products, bellows, springs, washers, corrosion resistant equipment. Typical uses in following sectors:-

Architecture:-Bridge bearing plates

  1. Fasteners:-Fasteners, cotter pins, lock washers
  2. Industrial:-Bourdon tubes, bellows, perforated sheets, chemical hardware, truss wire, springs, sleeve bushing, diaphragms, clutch disks, pressure responsive elements, beater bar, textile machinery, welding rods
  3. Electrical:-Resistance wire, fuse clips, electromechanical spring components, electrical flexing contact blades, electrical connectors, electronic connectors, wire brushes, switch parts, electronic and precision instrument parts

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Silicon Bronze

This is an alloy that can cover both brass and bronze (red silicon brasses and red silicon bronzes). They typically contain 20% zinc and 6% silicon. Red brass has high strength and corrosion resistance and is commonly used for valve stems. Red bronze is very similar but it has lower concentrations of zinc. It is commonly used in the manufacturing of pump and valve components. Typical uses in following sectors:-

  1. ELECTRICAL: conduit, pole line hardware, motor, rotor bars
  2. FASTENERS: bolts, cable clamps, cap screws, machine screws, nuts, rivets, u bolts, fasteners, screws
  3. INDUSTRIAL: oil refinery plumbing tube, heat exchanger tube, welding rod, hydraulic pressure lines
  4. MARINE: hardware

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