Aluminium Bronze Round Bars are high-strength copper-based alloy bars engineered for demanding industrial, mechanical, and marine applications. Composed primarily of copper alloyed with 5% to 12% aluminium (along with controlled additions of iron, nickel, and manganese), they feature a protective aluminium oxide surface layer. This grants them exceptional wear resistance, high load-bearing capacity, low magnetic permeability, and superior resistance to seawater corrosion, cavitation, and friction. They are widely utilized as reliable alternatives to conventional stainless or carbon steel in pump shafts, valve stems, bushings, gears, and marine hardware.
Specifications
• Standards & Specifications: ASTM B150, ASME SB150, BS, IS, JIS, DIN, UNI; AMS 4640, AMS 4880, AMS 4881, and AMS 4590.
• Dimensions:
o Outside Diameter (OD): 12 mm – 305 mm
o Inside Diameter (ID): 12 mm – 254 mm
o Length: 305 mm – 3100 mm (available in multiples of 305 mm – 1000 mm)
• Bar Profiles & Size Ranges:
o Round Bar and Rod: 8 mm to 100 mm
o Hex Bar and Rod: 10 mm to 60 mm
o Square Bar and Rod: 10 mm to 60 mm
o Flat Bar and Rod: Min 10 mm thickness, max 120 mm width
• Mechanical Properties:
o Tensile Strength: 590 – 655 MPa
o 0.2% Proof Stress: 240 – 260 MPa
o Elongation: 18% – 25%
o Hardness: 150 – 170 HB
• Chemical Composition:
o Copper (Cu): 79% min
o Aluminium (Al): 8.50 – 9.50%
o Iron (Fe): 3.50 – 4.50%
o Nickel (Ni): 4.00 – 5.00%
o Manganese (Mn): 0.80 – 1.50%
o Zinc (Zn): 0.50% max
o Tin (Sn): 0.10% max
o Lead (Pb): 0.05% max
Price
Exact pricing is not explicitly listed on the manufacturer's page as industrial metal prices fluctuate based on grade, dimensions, order volume, and market conditions. However, market rates for general and industrial-grade aluminium bronze round bars typically range between ₹650 to ₹1,500+ per kilogram, depending on the specific alloy grade (such as AB1, AB2, or C63000/C95400) and customization requirements.