Consolidated Coin Company P. Limited

Copper Alloy Strips

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Copper & Copper Alloy Strips

3C produces strips in various alloys such as Brass, Nickel Silver, Cupro Nickel, Aluminium Bronze etc. Our Strips are produced on modern production equipments and an effective and efficient quality assurance system alongwith a highly qualified work force ensure that the strips meet extremely high quality standards.

The quality of 3C products starts in the melting works followed by casting, double sided milling, intermediate rolling, annealing, pickling and superior final rolling. In Copper Alloy Strips : Only with the advancement of metallurgical technology, melting & casting alongwith integrated & sophisticated cold rolling & finishing technology. 3C is able to meet the customer demand with stringent product tolerances and services.

Today, our Strips used in a wide range of industries, especially for meeting the global demand for case cups, coinage, automobile industry etc. The variety of strips, the high quality and the degree of technological and metallurgical sophistication has positioned 3C as a leading supplier in India and abroad.

Manufacturing Process - Strips, Sheets & Coils

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Input of Raw Material
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Casting
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Surface Milling
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Breakdown Cold Rolling
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Annealing
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Surface Finishing
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Intermediate & Finish Rolling
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Stretch Levelling
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Cut to Length
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Slitting
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Ready for Packing

Brass Strips, Sheets & Coils

The brass strips form a wide product range of 3C. They are produced in high quality for universal application to satisfy the strictest requirements of customers. The raw material for the manufacturing is a cast strip, made by the modern continuous casting process. These strips have good cold workability that makes possible intensive and easy blanking. Annealed materials can be easily deep-drawn. Fields of application are Cartridge Case Cups, Bullet Jacket Cups, Coin Blanks, electronics, lighting techniques, metal decoration material industry, the vehicle industry, and the production of household items. Special hard grades are used as spring switch parts. The grades with homogeneous structures are used to manufacture components for the refrigerating industry. The strips can be easily polished.

After special heat treatment to control the grain size, the materials are suitable for multi-grade cold drawing of high level. Soft qualities can be delivered with pickled surface too. The excellent surface quality is guaranteed by the special technology (multi-step surface processing, bright annealing) developed by 3C. Good flatness and trueness to shape is characteristics of the material. For special request, tensile levelling is increasing the trueness to shape under 1 mm thickness.

Chemical Composition-Alloy
AlloyEN NoCu%Zn%Al%Fe%Ni%Pb%Sn%
CuZn10CW501L89,0-91,0Rest0,020,050,300,050,10
CuZn15CW502L84,0-86,0Rest0,020,050,300,050,10
CuZn28CW504L71,0-73,0Rest0,020,050,300,050,10
CuZn30CW505L69,0-71,0Rest0,020,050,300,050,10
CuZn33CW506L66,0-68,0Rest0,020,050,300,050,10
CuZn36CW507L63,5-65,5Rest0,020,050,300,100,10
CuZn37CW508L62,0-64,0Rest0,050,100,300,100,10
Physical Properties
AlloyEN NoDensity g/cm³Electrical ConductivityThermal ConductivityModulus of Elasticity
MS/m% IACSW/mKkN/m²
CuZn10CW501L8,8025,744188124
CuZn15CW502L8,7521,140161122
CuZn28CW504L8,5716,929124116
CuZn30CW505L8,5316,428121114
CuZn33CW506L8,4715,527116112
CuZn36CW507L8,4515,827116110
CuZn37CW508L8,4416,028116110
Mechanical Properties
AlloyHardnessHardness Tensile Strength N/mm²Yield Strength
N/mm²		Elongation %Hardness HV
Min.Max.Below 2.5mm Min.Over 2.5mm Min.Min.Max.
CuZn10H050240290max.14036455080
H080280360min.200132080110
H110350-min.29048110-
CuZn15H055260310max.17036455585
H085300370min.150162585115
H105350420min.250412105135
H125410-min.360--125-
CuZn28 CuZn30H055270350max.16040505590
H095350430min.170213395125
H125410490min.260915120155
H150480-min.430--150-
CuZn33H055280380max.17040505590
H095350430min.170233195125
H125420500min.300613125155
H150500-min.450--155-
CuZn36 CuZn37H055300370max.18038485590
H095350440min.170192895125
H125410490min.300812120155
H150480560min.4303-180180
H170550-min.500--170-
General Properties of Brass StripApplications of Brass Strip
Good Electrical ConductivityCartridge Case cups, Bullet jacket cups
Good Thermal ConductivityCoin Blanks, Electrical Components, Springs
Perfect StrengthSwitches, Contacts, Relays, Connector
Good Corrosion ResistanceJewellery Production
Good for SolderingTextile
Good for BrazingAutomotive Industry, Radiator & Heat Exchanger
Suitable for Plating Other MetalsDecoration
Perfect MachinabilityArchitectural
Wear ResistanceSanitary Ware
Good Ductility and Cold FormingConnecting Parts
Good ExtrudabilityKey Production

Copper

Strips, Sheets & Coils

Our Company uses LME Grade A Copper Cathodes for existing ETP, DHP, TBC and OFXLP. Strips produced in our premises have a smooth and polished surface with clean edges. Our equipments are all imported and state of the art in high quality. Only with the advancement of metallurgical technology, melting and casting alongwith integrated and sophisticated cold rolling and furnishing technology. 3C is able to meet the customer demand with stringent product tolerances and services.

Chemical Compositions
Alloy NameCu-ETPCu-DHPCu-TBC
Trade NameElectrolytic Tough Pitch CopperDeoxidized, High Residual Phosphorus CopperTin Bearing Copper
Standard ConformanceIS 191/ 14811/ 1897IS 191/ 14811/ 1897IS 3331
ASTMC11000C12200C14410
BS 2870C101C106-
EN 1652CW004ACW024A-
JISC1100C1220-

Chemical CompositionCu-ETPCu-DHPCu-TBC
Copper (Cu%)99.90 Min99.90 Min99.50 Min
Tin (Sn%)--0.07 - 0.20
Phosphorous (P%)-0.015 - 0.0400.015 - 0.045
Other Impurities (%)---
Mechanical Compositions
Alloy NameTrade NameTemperHardness HVTensile Strength N/mm² (Min)Elongation % Min
Cu-ETP Copper/ TapeElectrolytic Tough Pitch CopperAnnealed (O)55 Max195 Min35
Quarter Hard (HA)55-75215 Min25
Half Hard (HB)75-90250 Min15
Hard (H)90 Min274 Min-
Extra Hard (HE)110 Min340 Min-
Cu-DHPDeoxidized, High Residual Phosphorus CopperAnnealed (O)55 Max195 Min35
Quarter Hard (HA)55-75215 Min25
Half Hard (HB)75-90250 Min15
Hard (H)90 Min274 Min-
Extra Hard (HE)110 Min340 Min-
Cu-TBCTin Bearing CopperAnnealed (O)60 Max--
Quarter Hard (HA)60-80--
Half Hard (HB)80-100--
Hard (H)105-125--
Extra Hard (HE)125-145--
Thickness Tolerance
AlloyFor Strips and FoilsFor Sheets
Thickness Range (Min - Max) mmCoil ID (Min - Max) mmCoil Density (Max coil weight)Thickness Range (Min - Max) mmLength (Max) mm
Copper (XLPE, ETP, DHP, TBC)0.030 - 0.3100 - 30002-Mar--
0.031 - 0.80100 - 30002-Mar0.30 - 11500
0.81 - 3.00300 - 50002-Mar1 - 3.004000
Width Tolerance
AlloyFor Strips and FoilsFor Sheets
Thickness Range (Min - Max) mmCoil ID (Min - Max) mmCoil Density (Max coil weight)Width Range (Min - Max) mmLength (Max) mm
Copper (XLPE, ETP, DHP, TBC)10 - 350100 - 30002-Mar--
10 - 450100 - 30002-Mar450 Max1500
20 - 400300 - 50002-Mar450 Max4000

Nickel - Silver

Strips, Sheets & Coils

Because of their high strength, corrosion resistance and other excellent mechanical properties, the nickel silver strips are suitable for a wide range of applications. They are mainly used in electrotechnics, electronics, telecommunication and light techniques, food industry and instrument production. Each hard grade of them is excellently suitable to produce springs. They are used for coin production and as household items. The Nickel-Silver Strips can be easily and intensively cold worked, blanked and deep drawn. These strips are produced on up-to-date continuous casting equipment and high precision rolling mills.

Mechanical Properties
AlloyNominal StrengthTensile Strength (N/mm²)Elongation A10 min%BrinellVickers
minmaxminmax
CuNi12Zn24F-36360-430407510580110
F-43430-51013100140120150
F-51510-5905140170150180
F-56590-650-160180170200
F-65> 650-190-200-
CuNi18Zn20F-38380-450328011085115
F-45450-52015110150115150
F-52520-61010150180160190
F-58610-680-170190180200
F-68> 680-200-210-
CuNi18Zn27F-39390-470358511590120
F-47470-54015115160120170
F-54540-62010160190170200
F-60620-700-180210190220
F-70> 700-210-220-
Chemical Compositions
AlloyCu %Ni %Zn %These are the maximum % in the chemical composition
Mn%Fe%Sn%Pb%Sum. % #
CuNi12Zn2463.0 - 66.011 - 13REST0.500.300.030.030.10
CuNi18Zn2060.0 - 63.017 - 19REST0.500.300.030.030.10
CuNi18Zn2753.5 - 56.517 - 19REST0.500.300.030.030.10
THICKNESS TOLERANCE DIN 1791
THICKNESSTOLERANCE
mminchmminch
0.10 - 0.200.003935 - 0.007870+/- 0.010+/- 0.000393
0.21 - 0.300.008263 - 0.011805+/- 0.015+/- 0.000590
0.31 - 0.500.012198 - 0.019675+/- 0.020+/- 0.000787
0.51 - 0.800.020068 - 0.031480+/- 0.025+/- 0.000983
0.81 - 1.400.031873 - 0.055090+/- 0.030+/- 0.001180
1.41 - 2.000.055483 - 0.078700+/- 0.040+/- 0.001574
2.01 - 2.800.079093 - 0.110180+/- 0.050+/- 0.001967
2.81 - 3.000.110573 - 0.118050+/- 0.060+/- 0.002361
WIDTH TOLERANCE DIN 1791
WIDTH TOLERANCE (mm)
Thickness (mm)0 - 100100 - 200200 - 350350 - 500
0.10 - 1.00+/- 0.2+/- 0.4+/- 0.6+/- 1.0
1.01 - 2.00+/- 0.3+/- 0.5+/- 1.0+/- 1.2
2.01 - 2.50+/- 0.5+/- 0.7+/- 1.2+/- 1.5
2.51 - 3.00+/- 1.0+/- 1.2+/- 1.5+/- 2.0
General Properties of Nickel Silver StripApplications of Nickel Silver Strip
Good Electrical ConductivityElectrical Components
Good Thermal ConductivityJewellery Production
Good Cold FormingTextile
Perfect StrengthDecoration
Perfect for SolderingCoin Production
Perfect for BrazingConnecting Parts
Perfect MachinabilityKey Production

Phosphorus Bronze

Strips, Sheets & Coils

Phosphor Bronzes find wide applications in the electrical and electronic industry. They have excellent cold workability and relatively high strength and adequate electrical conductivity. Their fatigue strengths are high enough to make them suitable for application where repetitive actions stress the components, as in fasteners, electrical connectors, springs, electrical switches and similar products. Phosphor Bronzes are known to have the highest electrical conductivity, highest strength and best retention of strength at the component operating temperature, and ease and consistency of formability to components.

Chemical Compositions
AlloyUNS No.Copper Cu%Tin Sn%Phosphorous P%Iron Fe% (max)Lead Pb% (max)Zinc Zn% (max)
CuSn4C-51100Remainder3.5-4.90.03-0.350.100.050.30
CuSn5C-51000Remainder4.2-5.80.03-0.350.100.050.30
CuSn6C-51900Remainder5.0-7.00.03-0.350.100.050.20
CuSn8C-52100Remainder7.0-9.00.03-0.350.100.050.20
Mechanical Properties
ALLOYTemperTensile Strength (N/mm²)Elongation A10 min%Vickers Hardness
CuSn4Soft300-4103880-100
½Hard410-52012150-180
Hard490-6007180-200
Spring Hard600-685-200-220
CuSn5Soft304-3734080-100
½Hard471-56915160-190
Hard569-6187190-210
Spring Hard618 Min.-210-225
CuSn6Soft314-3924285-110
½Hard410-50020170-200
Hard588-6508200-225
Spring Hard650 Min.-225 Min
CuSn8Soft365-4605590-120
½Hard540-63020170-190
Hard590-69015190-220
Spring Hard660 Min.-230 Min
THICKNESS TOLERANCE DIN 1791
THICKNESSTOLERANCE
mminchmminch
0.10 - 0.200.003935 - 0.007870+/- 0.010+/- 0.000393
0.21 - 0.300.008263 - 0.011805+/- 0.015+/- 0.000590
0.31 - 0.500.012198 - 0.019675+/- 0.020+/- 0.000787
0.51 - 0.800.020068 - 0.031480+/- 0.025+/- 0.000983
0.81 - 1.400.031873 - 0.055090+/- 0.030+/- 0.001180
1.41 - 2.000.055483 - 0.078700+/- 0.040+/- 0.001574
2.01 - 2.800.079093 - 0.110180+/- 0.050+/- 0.001967
2.81 - 3.000.110573 - 0.118050+/- 0.060+/- 0.002361
WIDTH TOLERANCE DIN 1791
WIDTH TOLERANCE (mm)
Thickness (mm)0 - 100100 - 200200 - 350350 - 500
0.10 - 1.00+/- 0.2+/- 0.4+/- 0.6+/- 1.0
1.01 - 2.00+/- 0.3+/- 0.5+/- 1.0+/- 1.2
2.01 - 2.50+/- 0.5+/- 0.7+/- 1.2+/- 1.5
2.51 - 3.00+/- 1.0+/- 1.2+/- 1.5+/- 2.0
General Properties of Phosphorus Bronze StripApplications of Phosphorus Bronze Strip
Good Electrical ConductivityTelecommunication industry
Good Thermal ConductivityClutch Discs, Terminals, Valve Diaphragm and parts requiring springing characteristics
Good Cold FormingConnectors, Electronic industry
Perfect StrengthFuse Clips, Lock Washers
Perfect for SolderingSwitch Parts
Perfect for BrazingPerforated Sheets, Springs, Surgical & Dental Equipment
Perfect Machinability-

Aluminium Bronze

The Aluminium Bronze strips are a speciality product of 3C. We are the only copper alloy strip manufacturer in India that has the technical capability to produce and supply different grades of Aluminium Bronze strips for various applications. 3C is produces these strips as per the electrical conductivity require by the end product. We manufactures these strips on its modern & state-of-the-art equipment and the strips are supplied in ready to use form.

Chemical Compositions
AlloyCopper Cu %Nickel Ni %Aluminium Al %Iron Fe % MaxManganese Mn % MaxLead Pb % MaxOthersHardness VPN
CuAl891-93-7.5-8.50.030.050.0030.1As per requirement
CuAl6Ni291-931.5-2.55-70.030.050.0030.1As per requirement
CuAl5Ni291-931.5-2.54.5-5.50.030.050.0030.1As per requirement
CuNi6Al291-935.5-6.51.5-2.50.030.050.0030.1As per requirement
CuNi5Al5Fe88-904.5-5.54.5-5.51.000.050.0030.1As per requirement
Mechanical Properties
ALLOYTemperTensile Strength (N/mm²)Elongation A10 min%Vickers Hardness
CuSn4Soft300-4103880-100
½Hard410-52012150-180
Hard490-6007180-200
Spring Hard600-685-200-220
CuSn5Soft304-3734080-100
½Hard471-56915160-190
Hard569-6187190-210
Spring Hard618 Min.-210-225
CuSn6Soft314-3924285-110
½Hard410-50020170-200
Hard588-6508200-225
Spring Hard650 Min.-225 Min
CuSn8Soft365-4605590-120
½Hard540-63020170-190
Hard590-69015190-220
Spring Hard660 Min.-230 Min
Thickness Tolerance DIN 1791
THICKNESSTOLERANCE
mminchmminch
0.10 - 0.200.003935 - 0.007870+/- 0.010+/- 0.000393
0.21 - 0.300.008263 - 0.011805+/- 0.015+/- 0.000590
0.31 - 0.500.012198 - 0.019675+/- 0.020+/- 0.000787
0.51 - 0.800.020068 - 0.031480+/- 0.025+/- 0.000983
0.81 - 1.400.031873 - 0.055090+/- 0.030+/- 0.001180
1.41 - 2.000.055483 - 0.078700+/- 0.040+/- 0.001574
2.01 - 2.800.079093 - 0.110180+/- 0.050+/- 0.001967
2.81 - 3.000.110573 - 0.118050+/- 0.060+/- 0.002361
WIDTH TOLERANCE DIN 1791
WIDTH TOLERANCE (mm)
Thickness (mm)0 - 100100 - 200200 - 350350 - 500
0.10 - 1.00+/- 0.2+/- 0.4+/- 0.6+/- 1.0
1.01 - 2.00+/- 0.3+/- 0.5+/- 1.0+/- 1.2
2.01 - 2.50+/- 0.5+/- 0.7+/- 1.2+/- 1.5
2.51 - 3.00+/- 1.0+/- 1.2+/- 1.5+/- 2.0
General Properties of Aluminium Bronze StripApplications of Aluminium Bronze Strip
Corrosion ResistanceCoin Production
Temperature ResistanceWeapon handling system
Perfect StrengthFasteners
Good MachinabilityPumps Gears & Shafts