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Gunmetal Hollow bar
Manufacturer,Stockist and Exporter of Gunmetal Hollow bar
Sumer Metal Industries Private Limited is a renowned manufacturer, supplier, and exporter of high-quality Gunmetal Hollow Bars. The company caters to industrial clients globally, providing superior products that meet international standards.
Their Gunmetal Hollow Bars are exported to Oman, Qatar, Saudi Arabia, the UAE, Kuwait, Spain, Germany, the USA, Canada, and multiple regions across Africa, demonstrating their global market reach and reliability.
Gunmetal Hollow Bars are primarily composed of copper, tin, and zinc. The precise combination ensures excellent mechanical strength, corrosion resistance, and durability.
Optional lead is added in small amounts (0.5-1%) to enhance machinability without compromising the material’s structural integrity, making it suitable for complex engineering applications.
The products comply with international standards, including ASTM B134 and ASME SB134. This ensures consistent quality, dimensional accuracy, and reliability in demanding industrial environments.
Gunmetal Hollow Bars exhibit high tensile strength (210-250 MPa) and yield strength (140-180 MPa), which makes them ideal for heavy-duty applications and components subjected to high stress.
With hardness values ranging from 80-100 HB and elongation of 15-20%, these hollow bars offer excellent wear resistance while maintaining adequate flexibility to prevent brittle failure.
The copper-tin-zinc alloy composition provides exceptional resistance to corrosion, especially in marine and chemical environments, making it highly suitable for valves, pumps, and ship fittings.
Sumer Metal Industries employs advanced casting and extrusion techniques to produce hollow bars with uniform wall thickness, precise dimensions, and excellent surface finish.
Gunmetal Hollow Bars are available in diameters from 20 mm to 300 mm, wall thicknesses from 2 mm to 50 mm, and lengths ranging from 1000 mm to 6000 mm, offering versatility for various applications.
Specification Of Gunmetal Hollow bar
| Property | Specification / Range |
|---|---|
| Standard | ASTM B134, ASME SB134 |
| Shape | Hollow Bar / Tube |
| Diameter | 20 mm – 300 mm |
| Wall Thickness | 2 mm – 50 mm |
| Length | 1000 mm – 6000 mm |
| Tolerance | ±0.2 mm |
| Chemical Composition | Copper 85-90%, Tin 5-7%, Zinc 4-6%, Lead 0.5-1% (optional) |
| Mechanical Properties | Tensile Strength: 210-250 MPa, Yield Strength: 140-180 MPa, Elongation: 15-20%, Hardness: 80-100 HB |
Strict quality control ensures tolerances are maintained within ±0.2 mm, providing consistent performance and easy integration into machinery and assemblies.
The hollow bars correspond to international grades such as EN CuSn5Zn5Pb5, DIN CC491K, JIS C9050, ASTM B134, and BS LG2, making them compatible with global engineering standards
Gunmetal Hollow Bars are widely used in the marine, automotive, aerospace, and general engineering industries, where their strength, corrosion resistance, and machinability are critical.
In the marine sector, these hollow bars are utilized for propellers, ship fittings, and other components exposed to seawater due to their excellent corrosion resistance.
Chemical Properties Of Gunmetal Hollow bar
| Element | Percentage (%) | Purpose / Function |
|---|---|---|
| Copper (Cu) | 85 - 90 | Provides strength, corrosion resistance, and ductility |
| Tin (Sn) | 5 - 7 | Enhances corrosion resistance and wear resistance |
| Zinc (Zn) | 4 - 6 | Improves strength and hardness |
| Lead (Pb) | 0.5 - 1 (optional) | Increases machinability |
They are used in the production of bushings, bearings, and gears, ensuring smooth operation, durability, and resistance to wear in automotive machinery.
The combination of strength and machinability makes Gunmetal Hollow Bars suitable for aerospace components that demand precise tolerances and high reliability.
In general engineering, these hollow bars are used for valves, pumps, and industrial machinery parts, providing long-lasting performance under continuous operation.
Mechanical properties Properties Of Gunmetal Hollow bar
| Property | Value / Range | Unit |
|---|---|---|
| Tensile Strength | 210 - 250 | MPa |
| Yield Strength | 140 - 180 | MPa |
| Elongation | 15 - 20 | % |
| Hardness | 80 - 100 | HB |