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Krishna Copper Private Limited

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Brass

Krishna Copper Private Limited

Yellow / Cartridge Brass (70/30)


GRADE : - ASTM B36, DIN 2.0265, BS 2871 CZ106, BS 2875 CZ106, EN CW505L, c26000, c27000, c 27200, c27400, CW505L / CZ106

Description : Cartridge Brass also known as yellow brass has a nominal composition of 70% copper and 30% zinc. It has excellent to good corrosion resistance in most environments, but is not suitable for use with certain materials, such as acetic acid, moist ammonia or ammonia compounds, hydrochloric acid and nitric acid. It is the most ductile of the brasses and has superior cold workability, good hot formability, and is used in greater quantity than any other brasses.


 Key Features :

Applications:
Grillwork, Odometer Contacts, Heater Cores, Thermostats, Electrical Connectors, Radiator Cores, Radiator Tube, Tanks, Odometer Contacts, Heater Cores, Electrical Connectors, Snaps, Planters, Fireplace Screens, Etched Articles, Bird Cages, Coinage, Chain Links, Pen/Pencil Inserts and Clips, Syringe Parts, Watch Parts, Costume Jewelry, Buttons, Shells - Electrical Sockets, Lamps, Terminal Connectors, Flashlight Shells, Lamp Fixtures, Reflectors, Screw Shells, Pins, Rivets, Fasteners, Grommets, Eyelets, Screws, Air Pressure Conveyer Systems, Sound Proofing Equipment, Springs, Chain, Bead Chain, Tubing for Instruments and Machines, Heat Exchangers, Pump Cylinders, Wire Screens, Pumps, Liners, Power Cylinders, Ammunition Cartridge Cases, Mechanical Housings for Lighters, Shells - Mechanical Housings for Ammunition, Ammunition, Fittings, Bathroom Fixtures, Plumbing Accessories, Faucet, Traps, Plumbing Brass Goods, Stencils, Washers.


Available Forms:
Flats, Rods, Profiles/ Sections, Hex


Chemical Composition :
Copper 68.5-71.5%
Lead 0.05% max
Iron 0.05% max
Zinc Rem
Others 0.30% max

Fabrication properties
FORGING Fair
EXTRUSION Fair
HOT ROLL Fair
COLD ROLL Excellent

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Krishna Copper Private Limited

Red / Nordic Brass (85/15 - 80/20)


GRADE : ASTM B43, c23000, c 23400, c69400, c69430, c83600, c84400.

Description : RED BRASS is the most durable of all metals for commercial USAGE. Normally composed of 85% copper and 15% zinc, this alloy has excellent resistance against dezincification, season cracking and pitting. This has a rich inherent color, which has become extremely popular as an outdoor metal and has been found to be very important in modern architecture. IT IS also known as NORDIC Brass.


Applications: Etching Parts, Weather Strip, Trim, Sockets, Screw Shells, Conduit, Rotor Bars, AC Motors  Fasteners, Eyelets, Heat Exchanger Shells, Flexible Metal Hose, Pump Cylinder Liners, Tags, Radiator Cores, Pickling Crates, Condenser Tubes, Fire Extinguishers, Tubing for Instrumentation, Tubing for Heat Exchangers, Heat Exchangers, Kick Plates, Fittings, Pump Lines, Pipe Service Lines, Pipe Nipples, Pipe, Service Lines, J-Bends, Traps,  Fire Hose Couplings.

Available Forms:
Flats, Rods, Profiles/ Sections, Hex


Chemical Composition:
Product Cu Fe pb Zn
85/15 84-86 0.05 0.05 Rem
80/20 78.5-81.5 0.05 0.05 Rem
GOOD FAIR NOT RECOMMENDED
FORGING ---
EXTRUSION Good
HOT ROLL Good
COLD ROLL Excellent

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Krishna Copper Private Limited

High Tensile Brass (HTB1/HTB2/HTB3)


GRADE : CZ115 / CW722R / CW721R / CZ114

High tensile brass consists of a duplex structure. Developed for more exacting applications where strength and corrosion resistance are required. Also referred to as a manganese bronze the CW721R / CZ114 has additions of aluminium, iron, tin and manganese that are added to the basic 60/40 brass matrix, creating a variety of properties to benefit the designer.

The aluminium and tin content gives the CW721R / CZ114 a brighter finish and is the main reason for the increase in corrosion resistance. The iron and manganese additions also improve the strength level, with the iron also acting a grain refiner. Some of the other benefits of the CW721R / CZ114 grade are a very good hot working capacity to allow for hot stamping and a good machinability


Salient features:
Typical Uses:
Gas valves, fittings, fasteners, pump trim, gears, locks, heavy-duty electrical connectors, transmission components, marine hardware, safety tools and decorative metalwork.

Chemical Composition :
High Tensile Brass Cu Mn Al Fe Sn Ni Pb Si Zn
HTB1 55%min 3% max 0.7 -2.5 % 0.5 - 2 % 1.5% max 1% max 0.5% max 0.1% max remainder
HTB2 55% min 3% max 5% max 0.5 - 2.5% 0.5%  max 2% max 0.5% max 0.1% max remainder
HTB3 55% min 4% max 3-6% 1- 2.5% 0.2% max 1% max 0.2% max 0.10% remainder


FORGING GOOD
EXTRUSION GOOD
HOT ROLL Excellent
COLD ROLL Fair

Available Forms:
Ingots, Flats, Rods, Profiles/ Sections, Hex

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Krishna Copper Private Limited

Gilding Metal Copper (CUZN 90/10 - 95/5)

Grade : Alloy 220-UNS-C22000, CW501L / CZ101, C21000 (ASTM B36 )

It is a rich golden colour with the best combination of strength, ductility and corrosion resistance of the plain copper-zinc alloys. It weathers to a rich bronze colour, and can be supplied in pre-patinated colours ranging from deep brown to green.

It has a lower rate of work hardening than the copper-zinc alloys with higher zinc content, such as 260 and 272. This is an advantage in multistage pressing applications without interstage annealing. It has excellent deep drawing characteristics and resistance to pitting corrosion when exposed to severe weather and water environments.


Applications:
Architectural fascias, grillwork, jewellery, ornamental trim, vitreous enamel base, badges, door handles, escutcheons, marine hardware, munitions, primer caps, rotating bands, metallic bellows, pen, pencil and lipstick tubes etc.

Chemical Composition :
  (90/10) (95/5)
Copper 89.0-91.0% 94.0-96.0%
Lead 0.05% max 0.05% max
Iron 0.10% max 0.05% max
Zinc Rem Rem
Others 0.40% max 0.40% max


Fabrication Properties
FORGING GOOD
EXTRUSION GOOD
HOT ROLL Excellent
COLD ROLL Excellent

Available Forms:
Flats, Rods, Profiles/ Sections, Hex

Yes! I am Interested

Krishna Copper Private Limited

Free Machining & Cutting Brass

GRADE:- ASTM B16 C36000

 Description : Free-machining brass extruded bar in round rod, sharp corner hex bar, radius corner hex bar, square bar, and rectangle free cutting brass has a lead content of 2.5% to 3.7%, which enables the brass to be free-machining or free-cutting.


Application:
Lock Bodies, Hardware, Fittings, Hot Combs (to Straighten Hair, Bolts, Nuts, Screws, Faucet Components, Pneumatic Fittings, Fluid Connectors, Automatic Screw Machine Parts, Unions, Adapters, Screw Machine Products, Gauges, Valve Seats, Valve Trim, Valve Stems, Nozzles, Pinions, Gears, Plumbers' Brass Goods, Faucet Stems, Faucet Seats, Plumbing Fittings.

Available Forms:
Flats, Rods, Profiles / Sections, Hex


Chart:
Chemical Composition
Copper Lead Iron Zinc
60 – 63% 2.5 – 3% 0.35% MAX REMAINDER
Fabrication properties
FORGING N/A
EXTRUSION Good
HOT ROLL Fair
COLD ROLL Poor



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Krishna Copper Private Limited

Muntz Metal

GRADE:- ASME B36, C28000 

Muntz metal has a number of important qualities; one of the most valued of these is its color. Muntz is commonly used as an architectural metal in sheet and specific shapes. Due to the structure of the metal, it is stronger, harder, and more rigid than other forms of brass. At red heat, Copper Alloy C280 is extremely plastic and very well suited to hot forging, pressing, and stamping. The alloy is readily soldered and brazed.


Applications:
Chemical Composition:
Cu Fe Pb Zn
Min/Max 59.0 - 63.0 MAX 0.07 MAX 0.09 Rem
GOOD FAIR NOT RECOMMENDED
FORGING GOOD
EXTRUSION Excellent
HOT ROLL Excellent
COLD ROLL Fair

Available Forms:

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Krishna Copper Private Limited

Naval Brass

GRADE:- ASTM B171, ASTM B21, ASME SB171, C46400

NAVAL BRASS presents a high corrosion resistance to seawater, making it a top candidate for industrial and marine atmosphere jobs. THIS offers excellent properties for being hot worked, while also keeping the ability to be moderately cold worked.


Applications:
Lock Pins, Precision Shipboard Equipment, Rivets, Bolts, Nuts, Welding Rod, Condenser Plates, Structural Uses, Valve Stems, Balls, Heat Exchanger Tube, Aircraft Turn Buckle Barrels, Bearings, Dies, Golf Ball Production, Pressure Vessels, Bearings, Bushings, Hub Cones, Propellers Shafts, Marine Hardware, Decorative Fittings, Shafting, Propeller Shafts, Turn buckles, Missile Components, Baffle Plates and Flanges, Fittings.

Available Forms:
Flats, Rods, Profiles/ Sections, Hex, Ingots

Chemical Composition:
Designation
Material C46400
Elements Min. % Max. %
Copper 59 62
Tin 0.5 1
Zinc REM.
Lead - 0.2
Phosphorous - -
Nickel - -
Iron - 0.1
Aluminium - -
Manganese - -
Antimony - -
Arsenic - -
Silicon - -
Bismuth - -
Total other impurities - 0.7
FORGING GOOD
EXTRUSION GOOD
HOT ROLL GOOD
COLD ROLL Fair

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Krishna Copper Private Limited

Silicon Brass

GRADE: - ASTM B371, C69400 ASTM – B584, ASTM B1, 498- 13A

Silicon brasses are part of the subgroup of high strength brasses. These materials contain less than 20% zinc and less than 6% silicon. The silicon brasses are solid solution strengthened. These silicon brasses are typically chosen because of their high strength and moderately high corrosion resistance. The conductivity of the silicon brasses is much less than that of unalloyed copper. Silicon brass castings exhibit moderate strength and very good aqueous and atmospheric corrosion resistance.


Applications:
Bearings, gears, and intricately shaped pump and valve components.



Chemical Composition:
Cu Fe Pb Si Zn
C69400 80.0 - 83.0 0.2 0.3 3.5 - 4.5 Rem
GOOD FAIR NOT RECOMMENDED
FORGING Very Good
EXTRUSION GOOD
HOT ROLL Excellent
COLD ROLL Poor

Available Forms:
Flats, Rods, Profiles/ Sections, Hex, Ingots

Yes! I am Interested

Krishna Copper Private Limited

LOW Brass (CUZN20)

GRADE: - C24000

Low Brass With A Nominal Composition OF 80%. Copper And 20% Zinc. This Alloy HAS Colour Beta Yellow & Golden RED And FIND EXCEPTIONAL USES IN Decorative TRim Application.

Chemical Composition:
Cu 78.5 – 81.5
Fe 0.05
Pb 0.05
Zn Remainder

Application :- Ornammetal Metal Work, Lock & Instrument Diaes, Costume Jewellery, Battery Caps

Available Forms:
Flats, Rods, Profiles/ Sections, Hex

Fabrication properties
FORGING Fair
EXTRUSION Good
HOT ROLL Fair
COLD ROLL Excellent

Yes! I am Interested

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