Kanakratna Steelage Private Limited

Introduction

Aluminum Bronze Round Bars are highly versatile copper-based alloys that incorporate aluminum as the primary alloying element, along with additions of iron, nickel, and manganese for enhanced strength and corrosion resistance. These bars are widely used in marine engineering, aerospace, chemical processing, oil & gas, automotive, and heavy machinery due to their exceptional mechanical strength, resistance to seawater corrosion, and wear performance.

Unlike traditional bronzes or brasses, aluminum bronze exhibits a unique combination of strength approaching steels, coupled with corrosion resistance comparable to copper and nickel alloys. This makes Aluminum Bronze Round Bars a go-to material for bearings, bushings, pump shafts, valves, gears, and marine components.

 Chemical Composition of Aluminum Bronze

The properties of Aluminum Bronze Round Bars depend on their specific grade and composition. The general composition is:

 

 Mechanical & Physical Properties

Aluminum Bronze Round Bars offer excellent strength-to-weight ratio with corrosion and wear resistance.

Applications of Aluminum Bronze Round Bars
.Marine Industry
.Aerospace Industry
.Oil & Gas Industry
.Industrial & Engineering
.Defense & Nuclear Applications
Testing & Quality Assurance

• Mechanical Testing: Tensile, impact, hardness

• Corrosion Testing: ASTM B117 salt spray

• Non-Destructive Testing (NDT): Ultrasonic, eddy current, radiographic

• Certification: EN 10204 3.1 / 3.2, NACE MR0175 compliance

 

Additional Information:

• Item Code: AB2
• Production Capacity: 10 TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

Introduction

Gunmetal is a copper-based alloy historically used in cannons (“guns”), hence the name. It is primarily composed of copper, tin, and zinc, sometimes with trace amounts of lead. Gunmetal has been used for centuries in engineering, marine applications, decorative works, and heavy-duty machinery due to its strength, corrosion resistance, and wear resistance.

In modern industry, Gunmetal Round Bars are widely utilized because they combine ease of machining, castability, and durability. Their anti-corrosive nature in saltwater environments makes them especially popular in marine engineering, pump parts, valves, and shipbuilding.

 

Gunmetal round bars are manufactured in cast, forged, or extruded forms and are available in a variety of sizes and diameters.

Chemical Composition of Gunmetal

The exact composition can vary slightly depending on the grade, but the typical formulation is:

 

Mechanical Properties

Gunmetal round bars possess excellent strength combined with ductility:

Standards & Grades

Gunmetal round bars are produced according to international standards:

• IS 318 – Indian Standard (Lead-free and leaded gunmetals)

• ASTM B584 – Standard for copper alloy castings

• BS 1400 – British Standards (LG2, LG4 grades)

• DIN 1705 / 1709 – German Standards

• UNS C90500, C90700, C91300 – Various grades of gunmetal

 Sizes, Tolerances & Supply Forms

• Sizes: Ø10 mm to Ø400 mm (custom available).

• Lengths: 2m, 3m, 6m or cut-to-size.

• Supply Forms: Round bars, hex bars, square bars, hollow rods.

• Tolerances: As per ASTM, IS, or customer drawings.

Testing and Quality Standards

• Chemical Analysis (Spectrometry)

• Mechanical Tests (Tensile, Hardness, Impact)

• Non-Destructive Testing (Ultrasonic, Eddy Current)

• Corrosion Resistance Tests

• Dimensional Accuracy Inspection

Sustainability & Recycling

• 100% recyclable – Copper, tin, and zinc can be reclaimed.

• Lower environmental impact compared to plastics or composites.

• Long service life reduces waste generation.

• Used scrap from shipbreaking yards and industries is remelted for new bars.

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: 50 TONS READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

Introduction

Nickel alloys have been one of the most important groups of engineering materials for over a century. When fabricated into pipes, they provide exceptional resistance to corrosion, oxidation, and heat, combined with high mechanical strength and reliability.

Nickel alloy pipes are widely used across industries such as chemical processing, petrochemical, power generation, marine, aerospace, and oil & gas exploration, where materials must withstand harsh environments, corrosive chemicals, seawater exposure, and extreme temperatures.

Unlike carbon steels and stainless steels, nickel alloys exhibit unique metallurgical stability and outstanding performance in reducing and oxidizing environments, making them indispensable for critical piping systems.

This guide explores every aspect of Nickel Alloy Pipes: from their composition, types, and standards to applications, advantages, and global demand trends.

Chemical Composition

The typical chemical ranges of nickel alloys used in pipes:

 

Mechanical Properties

Nickel alloy pipes offer exceptional strength and toughness:

Physical Properties

• Density: 8.0–8.9 g/cm³

• Thermal Conductivity: 10–16 W/m·K

• Electrical Resistivity: 1.0–1.4 μΩ·m

• Coefficient of Expansion: 13–16 μm/m·°C

• Magnetic Properties: Non-magnetic to slightly magnetic

Heat Resistance

Nickel alloy pipes can withstand up to 1000°C service temperatures.

• Inconel alloys → Best for oxidation resistance and creep strength.

• Hastelloy alloys → Strong in reducing and oxidizing acids at high temp.

• Incoloy alloys → Structural stability under prolonged heating.

Testing & Quality Assurance

• Mechanical Tests: Tensile, hardness, impact.

• Non-Destructive Tests (NDT): Ultrasonic, radiography, hydrostatic testing.

• Corrosion Testing: ASTM G48 (pitting), intergranular corrosion.

• Dimensional Testing: OD, thickness, straightness.

Packaging & Delivery

• Pipes are supplied in wooden crates, steel bundles, or plastic wrap.

• Ends are capped to prevent contamination.

• Marking includes grade, size, heat number, and standard.

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

Introduction

Phosphor bronze, also known as tin bronze, is a copper-based alloy that contains tin (3.5–10%) and phosphorus (0.01–0.35%). The addition of tin improves strength and corrosion resistance, while phosphorus acts as a deoxidizer and grain refiner, enhancing wear resistance, fatigue resistance, and stiffness.

When produced in the form of strips, phosphor bronze finds significant use in industries requiring precision, resilience, and durability, such as electrical components, connectors, springs, automotive, marine, aerospace, and defense.

Phosphor bronze strips combine mechanical strength, excellent forming characteristics, and long service life, making them one of the most versatile copper alloy products.

 Physical Properties

 

Mechanical Properties Quality Control and Testing

• Chemical Analysis (Spectroscopy).

• Mechanical Testing (Tensile, Hardness, Fatigue).

• Microstructure Examination.

• Dimensional Inspection (Thickness, Width).

• Surface Quality (No cracks, pits, laminations).

Packaging & Delivery

• Strips supplied in coil form or cut lengths.

• Packed in wooden crates with moisture-proof wrapping.

• Marked with grade, size, batch number, and standard.

Additional Information:

• Production Capacity: IN KGS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

 Introduction

Brass Round Bars and Bushes are copper-zinc-based alloys widely used across multiple industries due to their excellent machinability, strength, ductility, and corrosion resistance. Brass has been in use since ancient times, but in modern engineering, it is manufactured to precise compositions and standards that make it ideal for both structural and functional components.

• Brass Round Bars: Solid cylindrical bars made of brass, available in different grades, diameters, and finishes. They are used in automobile parts, marine hardware, valves, fasteners, gears, shafts, and decorative applications.

• Brass Bushes (Bearings): Cylindrical hollow components made from brass, used as sliding or rotating bearings in machinery. Brass bushes reduce friction, wear, and energy loss in mechanical assemblies.

Chemical Composition of Brass Alloys

Brass is primarily a copper-zinc alloy, but small additions of other elements (lead, tin, aluminum, manganese, iron, nickel) are made to enhance specific properties.

General Composition Range

 

• Copper (Cu): 55–70%

• Zinc (Zn): 30–45%

• Lead (Pb): 0.5–3% (in free-cutting brass)

• Tin (Sn): Up to 2% (for corrosion resistance)

• Iron (Fe), Aluminum (Al), Nickel (Ni): Traces for strengthening

Mechanical Properties of Brass Round Bars  Physical Properties

• Density: ~8.5 g/cm³

• Melting Point: 900–940 °C (varies by composition)

• Electrical Conductivity: 28% IACS (lower than pure copper but adequate)

• Thermal Conductivity: ~120 W/m·K

• Non-Magnetic

• Good Acoustic Properties (used in musical instruments)

Applications of Brass Round Bars

• Automobile Industry: Shafts, gears, fasteners, connectors.

• Marine Applications: Naval brass used in propeller shafts, pumps.

• Electrical Industry: Terminals, connectors, switchgear.

• Architecture: Decorative railings, grills, and fittings.

• General Engineering: Screws, nuts, bolts, valves, flanges.

• Musical Instruments: Trumpets, saxophones, trombones.

 Machining & Fabrication

• Machining: Free-Cutting Brass (CuZn39Pb3) is the best machinable alloy.

• Hot Working Temperature: 650–750 °C.

• Cold Working: Alpha brasses are easily cold worked.

• Joining: Soldering, brazing, and welding possible.

 Quality Testing & Inspection

• Tensile & Hardness Tests

• Corrosion Resistance Test (ASTM B858)

• Ultrasonic / Eddy Current Tests

• Dimensional Accuracy

• Spectrochemical Analysis

Additional Information:

• Production Capacity: 50 TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes