Poly Metal India

Copper Sheet & Coil — Information
Material: Copper (Cu)
Purity: 99% – 99.9% (Electrolytic Tough Pitch Copper – ETP Grade)
Conductivity: 97–102% IACS (Excellent conductor)

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Common Grades
GradeFull FormPropertyUsage
ETP (C11000)Electrolytic Tough Pitch CopperHigh electrical conductivityElectrical parts
DHP (C12200)Deoxidized High PhosphorusCorrosion + welding friendlyPlumbing, AC
Brass (Copper Alloy)Cu + ZnStrength + shineDecorative

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Available Forms
FormThicknessWidthDelivery
Sheets0.3mm – 50mm300–1250mmFLAT
Coils0.1mm – 4mm50–600mmRoll form

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Surface Finish
Bright / Matte
Mill finish
Polished
Coated (Anti-tarnish / VCI)

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Properties
PropertyDescription
Electrical ConductivityBest among industrial metals
Thermal ConductivityHigh
Corrosion ResistanceExcellent
Malleability / DuctilityBending, forming easy
Non-magneticElectrical advantages
AntibacterialHygiene applications

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Usage / Applications
1⃣ Electrical & Electronics
Earthing & Busbars
Power cable shielding
PCB sheets
Switchgear parts
Transformer windings
2⃣ Architecture / Interior
Decorative panels
Roofing
Cladding
Kitchen fittings
Sculptures, Art work
3⃣ HVAC & Refrigeration
Heat exchangers
AC gas line support
Cooling plates
4⃣ Industrial
Chemical processing equipment
Gaskets & washers
Radiator parts
5⃣ Medical / Hygiene
Hospital touch surfaces
(कयोकि Copper bacteria मारता ह)
6⃣ Coins & Custom Products
Medal, Token, Badges, Name plates

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Sheet vs Coil — Quick Comparison
FeatureSheetCoil
FormingManual fabricationBetter for continuous production
Cutting Lossजयादाकम
UsageDecorative, BusbarHVAC, Electrical stamping

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Advantages
Long life & corrosion-resistant
Heat और electricity का best conductor
Fully recyclable material
Limitations
Cost जयादा
Surface tarnish → coating चाहिए
Soft metal → dent risk

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Thickness Recommendation
ApplicationIdeal Thickness
Busbar3mm – 10mm
Decoration0.5mm – 2mm
AC / HVAC0.3mm – 1mm
Earthing strip3mm – 6mm
PCB / Electronic shield0.1mm – 0.5mm

We are instrumental in offering our clients a high quality range of Beryllium Copper C17200 - C17500 - C17510 that is used in different industries. Following industry defined guidelines, we manufacture the entire range utilizing contemporary machines, modernize technology and prime grade copper. In order to ensure quality, the entire range of product is rigorously tested upon a series of parameters. In tune with clients'' diverse requirements, we offer the entire range in a wide range of specifications.
Features:
Durability
Corrosion-resistance
Precisely designed

Electrolytic Tough Pitch Copper (ETP)ASTM B124, ASTM B152, ASTM B187, ASTM B370, ASTM B188 & B272
C11000 Electrolytic Tough Pitch, known as ETP Copper or tough pitch copper, has long been the standard type of commercial wrought copper used in the production of sheet, plate, bar, rod, strip and wire. Copper 110 has an extremely wide range of applications based on its conductivity, corrosion resistance, workability, and beauty.
ETP COPPER APPLICATIONS
Electrical
Telecommunications
Architectural
Antimicrobial
Farmer’s Copper Ltd. maintains an extensive inventory of etp copper in the sheet, plate, rod, and bar variety, and can provide material cut to your specifications on our bar saws, shears, precision plate saw, and water jet cut. Contact one of our professional sales staff today and let us help you with your tough pitch (ETP) copper needs.

PB-1 Standard: BS 1400 Copper AlloysCUSNPBZNFENIPALSIImpuritiesPB 1Rem.10 Min0.250.050.10.10.5 Min0.010.020.6 PB-2 Standard: BS 1400 Copper AlloyCopper AlloysSNPBZNFENIPALSIImpuritiesPB 2Rem.11 - 130.50.30.150.50.15 Min0.010.020.2

Here’s a detailed overview of Naval Brass C46400, one of the most widely used naval brass grades:

Naval Brass – C46400 (UNS C46400)

C46400 is a copper-zinc-tin alloy known as naval brass due to its excellent corrosion resistance in marine and saltwater environments. It contains a small percentage of tin, which significantly improves its resistance to dezincification and stress corrosion cracking.

Chemical Composition:

Key Properties:

Corrosion Resistance: Excellent in seawater, especially with tin addition

Strength: High tensile strength; suitable for load-bearing marine applications

Ductility: Good for forming and machining

Thermal Conductivity: Suitable for heat exchanger components

Workability: Good hot working and moderate cold working

Mechanical Properties (Typical):

Tensile Strength: 360–550 MPa

Yield Strength: ~125 MPa

Elongation: ~30%

Hardness (Rockwell B): 80–100

Common Applications:

Marine hardware: Propeller shafts, nuts, bolts, fasteners, and rudder components

Heat exchanger tubes: Especially in condensers and power plants

Valves and pumps: Parts exposed to salt water

Architectural fittings: Decorative metalwork needing corrosion resistance

Bushings and bearings: In naval and industrial equipment

Advantages:

Resistant to saltwater corrosion and biofouling

Withstands high pressure and load in marine environments

Maintains mechanical properties over a wide temperature range

Beryllium copper sheets are used in a variety of applications, including: Electronics: Beryllium copper is used in electronic connectors, computer components, and telecommunications products.  Marine and offshore: Beryllium copper is used in marine hardware, pumps, valves, fasteners, and mooring systems. It is a good choice for these applications because of its high strength, corrosion resistance, and electrical conductivity. Medical: Beryllium copper is used in medical tools, pacemakers, and X-ray windows for mammography.  Aerospace: Beryllium copper is used in aerospace landing gears. Oilfield: Beryllium copper is used in oilfield tools and down-hole wire line tools.  Music: Beryllium copper is used in percussion instruments like tambourines and triangles because of its consistent tone and resonance. Cryogenic equipment: Beryllium copper is used in ultra-low temperature cryogenic equipment like dilution refrigerators.  Plastic molds: Beryllium copper is used in molds for manufacturing plastic containers. Gaskets: Beryllium copper is used in gaskets to create an RF-tight seal. MRI machines: Beryllium copper is used in servicing magnetic resonance imaging (MRI) machines.

We are a famous company in the industry, engaged in providing an extensive collection of Copper Bar. Our provided products are developed and designed using supreme grade material and advent-grade technology in conformity with market quality norms and standards. Acknowledged for sturdiness and durability, these are exceptionally recognized by our patrons.

Features:

Durable

Sturdy

Corrosion resistant

GRADE: ASTM B301, C14500

Description: C14500 Tellurium copper round rod. C145 Tellurium is adapted for use in high-speed automatic screw machines. The copper telluride precipitations become finely dispersed throughout the matrix and assist in chip breakage into short pieces, thus enabling a much higher machining speed than with pure copper. Copper 145 Tellurium has a machinability rating scale of 85%, compared to pure copper of 20%, thus insuring longer tool life. The high conductivity of tellurium copper makes it a suitable material for electrical applications, and is an outstanding alloy for the production of hot forged products.

Applications:

• Transistor Bases, Motor Parts, Electrical Connectors, Switch Parts, Welding Torch Tips, Soldering Tips, Screw Machine Products, Forgings , Plumbing Fittings, Sprinkler Heads, Fixtures, EDM Anodes, Tool Making Parts, Dies /Welding Torch tips / Transformer & Circuit-breaker terminals

Fasteners

Chemical Composition:

AVAILABLE FORMS:

• RODS

• SQUARE

• FLATS

Chromium copper alloys are high copper alloys, containing 0.6 to 1.2% Cr. The chromium copper alloys are used for their high strength, corrosion resistance and electrical conductivity. The chromium copper alloys are age hardenable, which, in this case, means that a change in properties occurs at elevated temperature due to the precipitation of chromium out of the solid solution. The strength of fully aged chromium copper is nearly twice that of pure copper and its conductivity remains high at 85% IACS, or 85% that of pure copper. These high strength alloys retain their strength at elevated temperatures. The corrosion resistance of chromium copper alloys is better than that of pure copper because chromium improves the chemical properties of the protective oxide film. Chromium copper has excellent cold formability and good hot workability. It is used in applications such as resistance welding electrodes, seam welding wheels, switch gears, cable connectors, circuit breaker parts, molds, spot welding tips, and electrical and thermal conductors that require strength. Chromium copper alloys are designated as UNS C18050 through C18600, the cast alloys are C81400 through C81540.

The age hardening reaction occurs because the solid solubility of chromium in copper decreases as the temperature decreases. The structure of slow cooled chromium copper is a two phase mixture of chromium and alpha copper. Superior mechanical properties are achieved by fast-cooling the chromium copper alloys from the annealing temperature, so the chromium remains in a supersaturated solid solution with the copper. Followed by an aging treatment where the chromium precipitates from the solid solution forming a very fine dispersion of precipitates in the matrix. The microstructure of a quenched or quickly cooled chromium copper alloy appears similar to that of the unalloyed copper. A fast cool prevents the chromium from precipitating out of the solid solution, so the resulting cast structure consists of a single phase alpha copper structure. The first material to solidify is pure copper, followed by a eutectic mixture of alpha and chromium. The alpha and chromium eutectic material forms a lamellar structure in the interdendritic regions. The microstructure of the wrought alloy consists of equiaxed, twinned grains of alpha copper solid solution. Typically the allow are cooled rapidly so the chromium remains in alpha copper solid solution. The tempering treatment allows the chromium to precipitate out of solution forming a dispersion of chromium precipitates throughout the matrix. The chromium precipitates, or hardening precipitates, can be very fine and may not be visible at low magnifications.

• Electric corrosion resistant
• Exceptional electrical conductivity
• Free cutting property

C18150 Copper Chromium Zirconium (RWMA Class II)
Used extensively for cap style resistance welding electrodes. Evidence suggests that it can provide less sticking and resist deformation longer than its copper-chrome counterpart in some specific situations.
Typical Uses for C18150 Copper Chromium Zirconium:
CONSUMER: Pencil-type & Light Soldering Guns: Tips, Rod Extensions
ELECTRICAL: Resistance Welding Electrodes
INDUSTRIAL: Welding Electrodes, Welding Wheels, Tips and Rod Extensions
CRCUZRMin/Max0.5 - 1.5Rem0.05 - 0.25Nominals1.000098.90000.1000
RWMA CLASS
(ALLOY NUMBER)CHEMICAL COMPOSITIONHARDNESSCONDUCTIVITY(%)TENSILE STRENGTHClass 2 (18200)CR.60-1.2B70-8380-8550-70 ksiClass 2 (18150)Cr.50-1.5 / ZR.05-.25B70-8380-8550-70 ksi
PRODUCT PROPERTYUS CUSTOMARYMETRICCoefficient of Thermal Expansion9.5 . 10-6 per oF (68-572 F)16.45 . 10 6? per °C (20-200 C)Density0.321 lb/in3 @ 68 F8.89 gm/cm3 @ 20 CElectrical Conductivity80 %IACS @ 68 F0.464 MegaSiemens/cm @ 20 CMelting Point Liquid US1976 F1080 CMelting Point Solid US1958 F1070 CModulas of Elasticity in Tension17000 ksi117200 MPaSpecific Gravity8.898.89Thermal Conductivity187.0 Btu . ft/(hr . ft2 . °F) @ 68 F323.9 W/m . °K at 20 C

CuZn40 (Muntz Metal) is a brass alloy with 40% of zinc. It has a two phased structure of alpha- and beta- phase. The alloy is mainly used for decorative purposes due to the deep bronzed color. The alloy has limited cold formability, yet it has a good hot formability. Due to the high zinc content the alloy is economically interesting. Fields of application are Architecture and decorative applications.

Cu.59.5-61.5
Zi.rem.

The electrical conductivity depends on chemical composition, the level of cold deformation and the grain size. A high level of deformation as well as a small grain size decrease the conductivity. 

Brass is resistant to: Natural, industrial and salt bearing atmospheres, drinking water, alkaline and neutral saline solutions. Brass is not resistant to: Acids, ammonia, halogenide, cyanide and hydrogen sulfide solutions and atmospheres as well as sea water (especially at high flow rates). Under certain circumstances (high Cl content and low carbon-hardness) dezincification can be an issue with CuZn40. The alloy also has a certain sensitivity to stress corrosion cracking when exposed to certain environments (e.g. ammonia, amine or sal ammoniac). The alloy should be stress relieved if stress corrosion cracking might be an issue. 

Usage
Architectural panels, large architectural trim, sheet, structural, heavy plate, door frames, decoration, hardware  

• Industry approved design
• Durability
• Anti corrosive

• They conduct the welding current to work
• They transmit the proper electrode pressure or force to the work in order to produce satisfactory weld
• They dissipate heat from the weld zone

• Seam welding electrodes are generally in the form of wheels and are referred to as seam welding wheels or rolls
• An exception to this is when a flat anvil or mandrel is used on one side with the opposite side being a wheel on a traveling head
• We are essentially manufactures seam welding wheels in proof machined & fully machined condition
• All seam welding wheels are manufactured out of individually forged blanks

High Tensile Brass Rods -

IS 320 HT1 or HT2

BS 2874 CZ114 or CZ115

JIS 3250H C6782 or C6783

Chemical RequirementsHT1HT2Copper56.0 - 60.0%56.0 - 61.0%Lead0.20 to 1.50%0.50 to 1.50%Iron0.20 to 1.25%0.20 to 1.50%Tin0.20 to 1.0%1.0% maxAluminum0.2% max0.30 to 2%Manganese0.25 - 2.0%0.50-2.0%Total Imp.0.50% max0.50% maxZincRemainderRemainderPhysical PropertiesConditionSizeT.S. MPaEL% MinT.S. MPaEL% MinAs manufacturedAll Size430 min20%460 min20%Cold-worked & Stress10-40480 min12%520 min12%Relieved40 above500 min15%Fabrication PropertiesCapacity for beingCold formedPoorFairHot workedGoodGoodMachinability Rating30%30%Resistance to CorrosionExcellentExcellentSuitability for solderingExcellentFairUsesHT1 is suitable for SolderingHt2 is suitable for Machining

• Apply force to the weld materials.
• Conduct welding current to the weld materials.
• Clamp parts in the proper alignment or orientation.
• Draw heat away from the weld and adjacent material.

• High electrical conductivity
• High resistance to mechanical wear and heat stresses.
• High thermal conductivity
• Low tendency to form alloys with weld materials.

CuCd1-UNS.C16200 Cadmium Copper alloys

A). CuCd1-UNS.C16200 Cadmium Copper alloys Details
CuCd1-UNS.C16200 Cadmium Copper alloys
CuCd1-UNS.C16200 Cadmium Copper alloy offers a unique combination of high tensile strength and high electrical conductivity for an industry where these properties are generally considered incompatible. The nominal composition of 99.0% copper and 1.0% cadmium can lead to these unique properties.
The cadmium noticeably increases the copper's strength and resistance to softening and stress relaxation with minimal decrease in its electrical conductivity. It also produces an alloy noted for its malleability and toughness and spring quality.

Typical Application for CuCd1-UNS.C16200 Cadmium Copper alloys: 
Electrical Industry: Resistance Welding Electrodes, Circuit Breaker Switches, Stud Bases for Power Transmitters, Electrical Conductor Material
Consumer: Rod Extensions, Pencil-type, Light Soldering Guns, Tips
Industrial: Connectors, Solderless Wrapped, Welding Wheels, Trolley Wires

Available Sizes:
Custom Diameter & Sizes, Random Mill lengths

Available Products (forms):
Round bars, Flat bars, Square bars, Wires
Custom shapes are available upon request.

B).
CuCd1-UNS.C16200 Cadmium Copper 

Chemical Composition:
Cd: 0.70-1.20%
Fe: 0.02% Max.
Cu: Reminder

C).
CuCd1-UNS.C16200 Cadmium Copper 
Typical Physical Properties:
Density at 68°F: 0.321 Lbs./In.3
Specific Gravity: 8.90
Melting Point (Liquidus): 1076°C (1969°F)
(Solidus): 1030°C (1886°F)
Coefficient of Thermal Expansion per °F: 9.8 x 10-6 (77-212°F)
Electrical Conductivity at 68°F (volumetric): 90% IACS (aged and drawn)
Thermal Conductivity Btu/ft.2/ft./hr./°F at 68°F: 208
Modulus of Elasticity - Tension: 17,000 ksi
Note:
1). the units are based upon US Customary.
2). the typical physical properties apply to age hardened products.

D). CuCd1-UNS.C16200 Cadmium Copper 
International Specification/Production Standards: 
Rods/Bars/Wires: UNS.C16200, CDA 162, ASTM B105, SAE J 461 & 463 
European Standards: CuCd1, DIN 17666 
Note:
ASTM: American Society for Testing and Materials
Note: Unless otherwise specified, material will be produced to ASTM.

E).
CuCd1-UNS.C16200 Cadmium Copper 
Mechanical Properties:
The detailed Mechanical Properties will be available on request from customers.

F). CuCd1-UNS.C16200 Cadmium Copper
Most Commonly Temper Used:
Rods/Bars/Wires: 1/2 H (TD02), H (TD04), HT(TH04)

Electrical: Springs, Contacts, Flat Cable, Trolley Wire, Clips

Industrial: Resistance Welding Electrodes

Density: 0.321 lb/in3 at 68 F

COPPER ALUMINIUM CLADED METAL :Copper Aluminium Bi-metal Sheet Supplier In India (commonly known as Copper Aluminium Bimetal or COPRAL ) :From ready stock, We supply Aluminium copper claded bi-metal  (ALCU) which consists of copper (sheet metal) claded on pure Aluminium (base metal), Both metals being diffused together to form an inseparable whole by roll bonding process. Some features include:Safe to use and require very low costs.The presence of Wis prevents Corrosion and oxidation.Terminals are provided with PVC insulation to provide di-electric strength.Shock-proof entry is developed in the wire barrels.Strict quality control and proper specifications are followed during their manufacture.This is not an alloy and copper layers are not Electroplating / galvanic coatings but are rather mechanically welded on Aluminium with Copper sheets.Aluminium Terminals are directly connected to Copper Terminals to carry current at a high voltage, bimetallic galvanic corrosion occurs, resulting in a high resistance at the joint. The heated joints are oxidized and losses contact resulting in sparks, voltage dropout power losses, and failure, damage to machinery.When this is placed between Aluminium Terminal and Copper Terminal at the joint (with Copper facing Copper and Aluminium facing Aluminium), bimetallic galvanic corrosion is averted due to absence of air. It is thus used at dissimilar metals joints of Aluminium and Copper to make similar metal contact. This has been successfully evaluated and used by many of the worlds leading electrical equipment manufacturers.Aluminium  Copper Clad metal Terminals: AI-Cu bi-metal terminal are used for connecting aluminium cable to copper busbars, Washers to prevent bimetallic galvanic electro-corrosion at copper and Aluminium joints. Applications Busbar chambers Bus ducts Cable clamp Circuit breakers Isolators On overhead lines Panel boards Switch bladesSwitch plantSwitchgearsTerminal stripsTerminals of copper connectingMotor control centersCable end connectorsOverhead connectorsApparatus constructionCable thimbles in copperCurrent bars & similar partsBimetallic clamp & connectorsDistribution and panel boardsconductors with aluminium conductorsOverhead busbar trunking systemsAs packing & washers bet aluminium & copper barsSleeve shape insert in terminals in copper & aluminiumSubstation accessories like bimetallic clamp and connectors

• Dimensional accuracy
• Easily Affordable Prices
• Durability
• Rust-proof
• Copper Tin alloys with about 0.4-1% phosphorus are harder than tin bronzes but with lower ductility