PB1 (Phosphor Bronze) | BS1400 PB1 Bronze Alloy Castings

PB1 (Phosphor Bronze) | BS1400 PB1 Bronze Alloy Castings

We are a premier manufacturer and exporter of PB1 Phosphor Bronze Alloy Castings, produced as per British Standard BS1400: PB1. Our in-house foundry and CNC machining facilities deliver precision components with superior mechanical strength and long service life. PB1 Phosphor Bronze is a high-tin bronze alloy offering exceptional strength, excellent wear resistance, and superb corrosion resistance — particularly in aggressive environments such as saltwater and chemical processing. It is the bronze of choice for heavy-duty applications involving high loads and speeds. Due to its fine-grained microstructure and high tensile properties, PB1 is ideal for the production of high-performance bearings, bushings, gears, worm wheels, valve parts, and heavy-duty industrial components.

Material Composition (Typical):

ElementPercentage (%)
Copper (Cu)86.0 – 90.0
Tin (Sn)9.0 – 11.0
Phosphorus (P)0.20 – 0.40
Others<1.0

Manufacturing Capabilities: We produce PB1 components using advanced foundry techniques:

  • Sand Casting
  • Centrifugal Casting
  • Continuous Casting

Machining services include:

  • CNC Turning
  • Milling & Drilling
  • Horizontal and Vertical Machining
  • Precision Grinding & Polishing

Typical Applications of PB1 Alloy: PB1 is widely used for:

  • Heavy-duty Bearings & Bushings
  • Gears and Worm Wheels
  • Pump Components
  • Valve Bodies & Stems
  • Hydraulic Press Bushes
  • Bridge Bearings
  • Railway Engineering Components
  • Industrial Wear Parts

Industries We Serve:

  • Marine & Shipbuilding
  • Heavy Engineering & Machinery
  • Oil & Gas
  • Steel & Mining
  • Hydraulic & Pneumatic Equipment
  • Railways & Transportation
  • Industrial Valves & Pumps

Mechanical Properties (Typical):

PropertyTypical Value
Tensile Strength270 – 350 MPa
Yield Strength150 – 180 MPa
Elongation (%)10 – 15 %
Brinell Hardness80 – 110 HB

Dimensional Tolerances: Standard ISO 8062 (CT7–CT8) or per custom drawing and tolerance requirements. Surface Finish Options:

  • Fully Machined
  • Polished
  • Surface Coated (on request)

Lead Time: Normal delivery in 4 to 6 weeks from order confirmation. Standards & Compliance:

  • BS1400: PB1
  • Closest ASTM Equivalent: ASTM B505 C90300 / C90500

 

Why Choose Us for PB1 Phosphor Bronze Castings?

  • ISO 9001:2015 Certified
  • Modern in-house foundry and machining
  • High-performance bronze alloys with consistent quality
  • Flexible production (small batch & high volume)
  • Worldwide export with competitive lead times
  • Experienced technical support