Gunmetal Bars are frequently utilised as a starting inventory for machining durable components that have to operate under fluid, continuous movement and corrosive conditions. These bars are made of balanced copper-tin-zinc alloy, which will provide good structural integrity as well as consistent erosion and moisture-attack resistance.
Their heavy and uniform structure gives them predictable cutting behaviour, thus they can be accurately fabricated to produce valve components, pump elements, bearing housings and designed fittings. The material is strong and resistant to shape degradation when subjected to the long term operational stresses, and this contributes to minimising the risk of failure in the critical assemblies. Gunmetal bars are highly machinable and maintain constant hardness throughout the section, which enhances efficiency and quality of finishing. They are still a reliable material selection in the marine and industrial systems that demand durability and service reliability.
Gunmetal Bars Manufacturers in India favour industries where parts are heavily loaded, are in fluid contact and subject to sustained mechanical forces. Ganga R Ispat Metals uses controlled alloy melting, precision casting, extrusion and dimensional finishing in the production of Gunmetal Bars. The bars are made to provide reliable mechanical performance, corrosion resistance, and internal structure. Quality checks involve chemical composition measurement, hardness measurements, dimensional measurements and surface measurements to guarantee reliable work under harsh conditions.
Gunmetal Bars in India are used in pump parts, valve bodies, marine fittings, bearing parts and in parts of the industrial machinery where corrosion and wear resistance are necessary. Our Gunmetal Bars are accurate in their dimensions during machining and do not change their behaviour during turning, drilling and milling. This stability helps them to be used in engineering demanding fields with long durability.
Gunmetal Bars Forms: There are suitable Gunmetal bar forms that are used for engineering purposes, like.
Being a Gunmetal Bars Supplier in India, we give special emphasis on specification accuracy, repeatability, and controlled supply. The Gunmetal Bars are tested by a spectrometer, tested in hardness, dimension checked, and surface checked before delivery. We also have an integrated manufacturing system so that alloy composition and machining behaviour are the same across batches.
|
Material Category |
Bar Type |
Process Control |
Application Area |
|
Gunmetal alloy |
Round bars |
Casting and extrusion under control. |
Pumps and valves |
|
Gunmetal alloy |
Square bars |
Dimensional calibration |
Wear components |
|
Gunmetal alloy |
Hex bars |
Machining-focused processing |
Industrial fittings |
|
Gunmetal alloy |
Custom bars |
Drawing-based execution |
OEM assemblies |
Our Gunmetal Bars Dealers in India are in charge of ensuring that there is a reliable supply of adequately graded materials in various regions. Dealers also keep inventory levels, arrange timely deliveries, and assist engineering departments, maintenance contractors, and fabrication plants with the selection of the material that is appropriate for its use in applications.
Such a dealer system enhances reliability in supply.
|
Standard Reference |
Control Area |
Manufacturing Capability |
|
IS Standards |
Chemical structure and mechanical characteristics. |
Manufacturing in accordance with the given IS requirements. |
|
ASTM Standards |
Dimensional accuracy and performance. |
Capable of production according to the ASTM. |
|
Customer Drawings |
Tolerance and size accuracy |
Fabricated according to the checked drawings. |
|
Export Norms |
Traceability |
Documentation-supported dispatch |
Ganga R Ispat Metals, as the manufacturer of engineered bars in India, exports the bars to the global industrial and marine sectors as Gunmetal Bars Exporters in India. Export shipments are made ready with confirmed test certificates, protective packaging and complete traceability. Customers abroad rely on our Gunmetal Bars to use when it is needed to have corrosion resistance, strength and consistent alloy behaviour.
In case your application needs to be corrosion resistant, load-bearing strengths and reliable machining capabilities, Ganga R Ispat Metals are well prepared to cater to your requirements. We are Engineered Bar Solution Manufacturers, Suppliers, Dealers, and Exporters of Gunmetal Bars that are produced, technically justified and supply-planned. Get in touch to have specifications, custom sizes and requirements of Gunmetal bars used in industries.
| Grade / Designation | Equivalent / Common Trade Name | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|---|
| G1 / Grade I (BS1400 G1-C) | Gun Metal – Standard Grade | 200 – 250 | 90 – 130 | 10 – 18 | 65 – 85 |
| G2 / Grade II (BS1400 G2-C) | Gun Metal – Pressure Grade | 220 – 270 | 110 – 150 | 8 – 15 | 70 – 90 |
| G3 / Grade III (BS1400 G3-C) | Gun Metal – High Strength | 240 – 300 | 130 – 170 | 6 – 12 | 80 – 100 |
| LG1 (BS1400 LG1-C) | Leaded Gun Metal | 180 – 230 | 80 – 120 | 8 – 15 | 60 – 80 |
| LG2 (BS1400 LG2-C) | Bearing Grade Gun Metal | 170 – 220 | 70 – 110 | 6 – 12 | 55 – 75 |
| LG3 (BS1400 LG3-C) | High Machinability Gun Metal | 160 – 210 | 65 – 100 | 5 – 10 | 50 – 70 |
| IS 318 – LTB-1 | Leaded Tin Bronze (Gun Metal) | 180 – 230 | 80 – 120 | 8 – 15 | 60 – 80 |
| IS 318 – LTB-2 | High Strength Leaded Tin Bronze | 200 – 260 | 100 – 140 | 6 – 12 | 70 – 90 |
| Grade / Designation | Thermal Conductivity (W/m·K) | Specific Heat (J/kg·K) | Coefficient of Thermal Expansion (µm/m·°C) | Melting Range (°C) |
|---|---|---|---|---|
| G1 / Grade I | 50 – 55 | 370 – 390 | 17.0 – 18.0 | 880 – 950 |
| G2 / Grade II | 48 – 54 | 370 – 390 | 16.8 – 17.8 | 880 – 940 |
| G3 / Grade III | 45 – 52 | 365 – 385 | 16.5 – 17.5 | 870 – 930 |
| LG1 | 40 – 48 | 360 – 380 | 18.0 – 19.0 | 850 – 920 |
| LG2 | 38 – 46 | 355 – 375 | 18.5 – 19.5 | 840 – 910 |
| LG3 | 35 – 44 | 350 – 370 | 19.0 – 20.0 | 830 – 900 |
| IS 318 – LTB-1 | 40 – 48 | 360 – 380 | 18.0 – 19.0 | 850 – 920 |
| IS 318 – LTB-2 | 45 – 52 | 365 – 385 | 17.0 – 18.5 | 860 – 930 |
| Property | G1 / LG1 / LTB-1 | G2 / LG2 / LTB-2 | G3 / LG3 | Unit |
|---|---|---|---|---|
| Density | 8.7 – 8.8 | 8.7 – 8.8 | 8.8 – 8.9 | g/cm³ |
| Density | 8700 – 8900 | 8700 – 8900 | 8800 – 9000 | kg/m³ |
| Melting Range | 900 – 1020 | 880 – 1000 | 870 – 980 | °C |
| Color / Appearance | Reddish Bronze | Bronze | Dark Bronze | — |
| Porosity | Very Low | Low | Low | — |
| Magnetic Property | Non-magnetic | Non-magnetic | Non-magnetic | — |
| Standard System | Grade / Designation | Equivalent / Common Trade Name |
|---|---|---|
| British Standards (BS) | G1 / Grade I (BS1400 G1-C) | Gun Metal – Standard Grade |
| British Standards (BS) | G2 / Grade II (BS1400 G2-C) | Gun Metal – Pressure Grade |
| British Standards (BS) | G3 / Grade III (BS1400 G3-C) | Gun Metal – High Strength Grade |
| British Standards (BS – Leaded Gun Metal) | LG1 (BS1400 LG1-C) | Leaded Gun Metal |
| British Standards (BS – Leaded Gun Metal) | LG2 (BS1400 LG2-C) | Leaded Gun Metal – Bearing Grade |
| British Standards (BS – Leaded Gun Metal) | LG3 (BS1400 LG3-C) | Leaded Gun Metal – High Machinability |
| Indian Standards (IS) | IS 318 – LTB-1 | Leaded Tin Bronze (Gun Metal Equivalent) |
| Indian Standards (IS) | IS 318 – LTB-2 | High Strength Leaded Tin Bronze |
| Parameter | Standard Range | Remarks |
|---|---|---|
| Diameter | 10 mm – 300 mm | Stock & custom sizes available |
| Length (Standard) | 1 m – 3 m | Random / fixed length |
| Length (Cut-to-size) | As per customer requirement | CNC / saw cut |
| Straightness | As per IS / BS tolerance | Suitable for machining |
| Parameter | Standard Range | Remarks |
|---|---|---|
| Size (A × A) | 10 mm × 10 mm – 150 mm × 150 mm | Limited availability |
| Length | 1 m – 3 m | Cut-to-length |
| Tolerance | As per BS 1400 / IS 318 | — |
| Parameter | Standard Range | Remarks |
|---|---|---|
| Across Flats (AF) | 10 mm – 100 mm | Mostly for leaded grades |
| Length | 1 m – 3 m | Machining friendly |
| Standard | Grades Covered |
|---|---|
| BS 1400 | G1, G2, G3, LG1, LG2, LG3 |
| IS 318 | LTB-1, LTB-2 |
| Diameter (mm) | Weight (kg/m) |
|---|---|
| 10 | 0.68 |
| 12 | 0.98 |
| 16 | 1.75 |
| 20 | 2.73 |
| 25 | 4.27 |
| 30 | 6.14 |
| 40 | 10.94 |
| 50 | 17.09 |
| 60 | 24.61 |
| 75 | 38.47 |
| 100 | 68.33 |
| 125 | 106.78 |
| 150 | 153.74 |
| 200 | 273.32 |
| 250 | 426.8 |
| 300 | 614.6 |
| Size (mm) | Weight (kg/m) |
|---|---|
| 10 × 10 | 0.87 |
| 20 × 20 | 3.48 |
| 30 × 30 | 7.83 |
| 40 × 40 | 13.92 |
| 50 × 50 | 21.75 |
| 75 × 75 | 48.94 |
| 100 × 100 | 87 |
| 125 × 125 | 135.94 |
| 150 × 150 | 195.75 |
| Across Flats (mm) | Weight (kg/m) |
|---|---|
| 10 | 0.75 |
| 20 | 3 |
| 30 | 6.75 |
| 40 | 12 |
| 50 | 18.75 |
| 60 | 27 |
| 75 | 42.19 |
| 100 | 75 |
| Grade / Designation | Equivalent / Common Trade Name | Cu % | Sn % | Zn % | Pb % | Others % |
|---|---|---|---|---|---|---|
| G1 / Grade I (BS1400 G1-C) | Gun Metal – Standard | 85 – 88 | 5 – 7 | 5 – 7 | ≤ 0.2 | Fe ≤ 0.2 |
| G2 / Grade II (BS1400 G2-C) | Gun Metal – Pressure Grade | 86 – 89 | 6 – 8 | 3 – 5 | ≤ 0.2 | Fe ≤ 0.2 |
| G3 / Grade III (BS1400 G3-C) | Gun Metal – High Strength | 88 – 90 | 8 – 10 | 1 – 3 | ≤ 0.2 | Fe ≤ 0.2 |
| Grade / Designation | Equivalent / Common Trade Name | Cu % | Sn % | Zn % | Pb % | Others % |
|---|---|---|---|---|---|---|
| LG1 (BS1400 LG1-C) | Leaded Gun Metal | 85 – 88 | 4 – 6 | 2 – 4 | 4 – 6 | Fe ≤ 0.2 |
| LG2 (BS1400 LG2-C) | Bearing Grade Gun Metal | 83 – 86 | 4 – 6 | 2 – 4 | 6 – 8 | Fe ≤ 0.2 |
| LG3 (BS1400 LG3-C) | High Machinability Gun Metal | 80 – 84 | 3 – 5 | 2 – 4 | 8 – 10 | Fe ≤ 0.2 |
| Grade / Designation | Equivalent / Common Trade Name | Cu % | Sn % | Zn % | Pb % | Others % |
|---|---|---|---|---|---|---|
| IS 318 – LTB-1 | Leaded Tin Bronze (Gun Metal) | 85 – 88 | 4 – 6 | 2 – 4 | 4 – 6 | Fe ≤ 0.2 |
| IS 318 – LTB-2 | High Strength Leaded Tin Bronze | 83 – 86 | 5 – 7 | 2 – 4 | 6 – 8 | Fe ≤ 0.2 |
| Stage | Process / Technique | Description |
|---|---|---|
| Raw Material Selection | Copper, Tin, Zinc, Lead (if required) | Selected as per BS 1400 / IS 318 grade |
| Charge Preparation | Accurate batching | Composition control for G1, G2, G3, LG grades |
| Melting | Induction / Oil-fired furnace | Melting temperature 1000 – 1150 °C |
| Fluxing | Flux & degassing agents | Removes oxides & gas inclusions |
| Alloying | Tin & Zinc addition | Achieves specified gun metal chemistry |
| Temperature Control | Pyrometer monitored | Prevents segregation & overheating |
| Casting Method | Sand Casting | Standard process for gun metal bars |
| Mould Type | Green sand / CO₂ sand | Produces square, rectangular & flat bars |
| Pouring | Gravity pouring | Uniform metal flow |
| Solidification | Controlled cooling | Reduces shrinkage defects |
| Knockout | Mould breaking | After complete solidification |
| Fettling | Riser & gate removal | Cleaning of bar surfaces |
| Straightening | Mechanical / Press straightening | Dimensional correction |
| Heat Treatment (Optional) | Stress relieving / Annealing | Improves machinability |
| Surface Cleaning | Shot blasting / Wire brushing | Removes sand & scale |
| Machining (Optional) | Milling / Surface grinding | Achieves final bar size |
| Inspection | Dimensional & visual | As per QC plan |
| Packing | Wooden pallets / bundles | For safe transport |
| Bar Type | Description |
|---|---|
| Square Bars | Equal cross-section |
| Rectangular Bars | Flat / plate-type bars |
| Flat Bars | Width > thickness |
| Finish Technique | Process Used | Surface Quality / Result | Application / Purpose |
|---|---|---|---|
| As-Cast Finish | After sand casting | Rough surface | Non-critical applications |
| Shot Blasting | Steel shots blasting | Clean, uniform matte surface | Removes sand & scale |
| Grit Blasting | Abrasive blasting | Slightly roughened surface | Pre-machining preparation |
| Machined Finish | Milling / Surface grinding | Smooth, accurate surface | Precision components |
| Rough Machining | Surface milling | Removes casting skin | Pre-finish stage |
| Fine Machining | Finish milling / Grinding | Fine surface finish | Dimensional accuracy |
| Polished Finish | Buffing & polishing | Smooth, glossy surface | Decorative / exposed parts |
| Lapped Finish (Optional) | Manual / machine lapping | Very fine finish | High precision surfaces |
| Deburring | Manual / mechanical | Sharp edges removed | Safety & assembly |
| Protective Coating (Optional) | Oil / rust preventive | Corrosion protection | Storage & transport |
| Finish Type | Ra Value (µm) |
|---|---|
| As-cast | 12.5 – 25 |
| Shot blasted | 6.3 – 12.5 |
| Machined | 3.2 – 6.3 |
| Fine machined | 1.6 – 3.2 |
| Polished | ≤ 1.6 |
| Industry | Application | Details / Purpose |
|---|---|---|
| Marine | Propeller shafts | High corrosion resistance in seawater |
| Marine | Pump components | Durable against saltwater corrosion |
| Plumbing | Valves | Excellent resistance to water corrosion |
| Plumbing | Pipe fittings | Strong and leak-resistant |
| Automotive | Bushes | Good wear resistance |
| Automotive | Bearings | Low friction and high durability |
| Industrial Machinery | Gears | Good machinability and strength |
| Industrial Machinery | Worm wheels | Excellent anti-friction properties |
| Electrical | Terminal connectors | Good conductivity and corrosion resistance |
| Steam Systems | Steam fittings | Withstands high pressure and temperature |
| Oil & Gas | Pump bodies | Durable and corrosion-resistant |
| Chemical Industry | Valve bodies | Resistant to chemical corrosion |
Packaging is a major part of every delivery, and we understand it very well. We supply many types of metals and other industrial metal products to make sure they reach our customers safely. We know products face many types of problems, such as vibration, moisture and rough handling therefore we follow a careful and organised packaging process. Our goal is simple: we deliver every product in the same strong and perfect condition as when it leaves our facility.
We check every order before packing it. The size, straightness, surface quality, grade, and quantity of each rod and bar are checked. We ensure that the material is correct as per the customer request. Once inspected, we sort the products by their size and grade of material. This will ensure that we maintain the order in everything and prevent errors in dispatch. Bundling and loading are also simpler and quicker.
After these steps, make sure to arrange the products in proper alignment so that they are straight and balanced. Then they are strapped down with industrial grade strapping. These straps keep the bundle secure during lifting and transportation. We include additional support to shorten bending or movement in longer rods. We also ensure that the straps do not tear the edges or the surface of the material. This cautious wrapping ensures the merchandise is secure throughout the delivery and transportation.
Sometimes metal can be damaged by moisture and changing weather conditions. We apply protective methods based on the shipment type and destination. We may use anti-rust coatings, moisture-resistant wrapping, or protective covers to prevent them. Our additional cover against humidity and corrosion is given to export shipments and coastal deliveries. These will assist us to retain the shine, surface finish and integrity of our metal products in the long-distance transportation.
In case of large orders and/or shipments to the export market, we offer extra protection. We pack them on heavy pallets or stuff them into tough wooden structures that can be transported all over the world. The packaging is dependent on the size and weight of the shipment. We ensure that the packing is able to withstand packing pressure and movement of containers. This strong outer coating secures the materials throughout their long trips, port services and storage in warehousing.
We have proper lifting equipment such as forklifts and cranes to load materials. Our team places the bundles carefully inside trucks or containers. We place them in such a manner that they do not roll or shift during the transportation. We balance the weight to minimise the weight on any section of the shipment. Our safe loading methods give us the chance to reduce the chances of being damaged in transit, whether it is along the road or the sea.
Ganga R Ispat Metals distributes its products in India and also in overseas markets. We provide transportation with trusted logistics vendors. In the case of domestic deliveries, we organise road transportation. In export orders, we meet the international shipping standards and container loading requirements. Each shipment will be planned based on the delivery schedules to make it arrive on time. Our well organized transport system assists us in delivering products in an efficient and safe way.
We make ready all papers preceding dispatch. These documents can be invoices, packing lists, and required certificates. Proper documentation assists in easy transportation and reduced time in clearance of customs when making export shipments. We have good records to promote transparency and professional service.
A well-structured packaging and transportation process directly impacts product performance upon delivery. Our approach ensures:
We believe that packaging is not just about wrapping materials — it is about protecting the value and reliability of the product until it reaches the client.
In Ganga R Ispat Metals, we suppose that safe packaging and transportation ensure the value of our products. To avoid bending, scratches, and corrosion, we make every effort to avoid transit damage. We consider packaging as our quality responsibility. We have a standard process; however, our packing techniques are changed according to the product size, order quantity, and destination.
We ensure that all the rods and bars are sold to our customers in a powerful, secure and working condition. We offer secure packaging or assured transportation as an additional service.
The time frames for delivery of gunmetal bars are based on the availability of stock and the size of the order. If stock is readily available for the bars, then they can be shipped in a shorter time frame.
Ordering bars in bulk does tend to be more cost-effective. The bulk order pricing standardizes quality and keeps consistency across the order while also lowering the price point.
Minimum order quantity varies with the size and availability of the bars. For standard sizes, minimum order quantities are flexible, while more custom sizes tend to have larger minimum order quantities.
Pricing of gunmetal bars includes the size, length, quantity, market factors, and material composition. Buying in larger quantities is more cost-effective.
We can set up a regular supply of gunmetal bars to allow for ongoing production and fulfill long-term project needs.
