LG4 (Leaded Gunmetal) | BS1400 LG4 Bronze Alloy Castings

We are a leading manufacturer and exporter of high-performance LG4 Leaded Gunmetal Bronze Alloy castings. Our products are manufactured in strict accordance with British Standard BS1400: LG4, ensuring consistent quality and performance. LG4 bronze alloy is specially designed for use in high-load applications where strength and corrosion resistance are critical. With excellent casting properties and machinability, LG4 is ideal for making complex components for the marine, engineering, oil & gas, and pump & valve industries. LG4 offers a higher tensile strength than LG2 and delivers excellent resistance to corrosion — especially in saltwater, brine, and other aggressive environments.

Material Composition (Typical):

Manufacturing Capabilities: Our foundry is equipped for:

• Sand Casting
• Centrifugal Casting
• Continuous Casting

We offer full CNC machining services using:

• CNC Lathes
• Vertical and Horizontal Machining Centres
• Milling Machines
• Boring Mills
• Polishing & Surface Treatment Units

Typical Applications of LG4 Alloy: LG4 leaded gunmetal alloy is ideal for manufacturing:

• High-load Bearings and Bushings
• Valve Bodies and Fittings
• Pump Casings, Impellers, and Wear Plates
• Marine Hardware
• Heavy-duty Hydraulic Parts
• General Engineering Components

Industries We Serve:

• Marine & Shipbuilding
• Oil & Gas
• Water Treatment
• Hydraulic Systems
• Pumps & Valves
• Heavy Mechanical Engineering

Mechanical Properties (Typical):

Dimensional Tolerances: In line with ISO 8062 (CT7–CT8) or based on custom customer drawings. Surface Finish Options:

• Precision Machined
• Polished
• Marine-Grade Anti-Corrosion Coatings (optional)

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

• BS1400: LG4
• Closest Equivalent: ASTM B505 C92200

Why Choose Us for LG4 Bronze Castings?

• State-of-the-art in-house foundry and machining
• ISO 9001:2015 certified production
• Rapid prototyping and sampling
• Flexible batch sizes (small and large volume orders)
• Global export capabilities
• Competitive pricing with reliable delivery