Mehta Tubes Limited cupro nickel, cupro nickel alloy, cupro nickel tube, cupro nickel tubes
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Copper Tubes


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Mehta Tubes Limited
Mehta Tubes Limited

Flexible and adaptive Mexflow® Copper Cable Terminals

CUPRO NICKEL TUBES

 


Mehta Tubes Limited Cupro Nickel Tubes 95/5, 90/10 & 70/30 Marine application
Curpo Nickel Tubes

These Cupro Nickel tubes & pipes for Marine application are very important for all Industrial fields. The company has experience in these areas and is able to supply these tubes in accordance with most international standards and special customer requirements.




Chemical Composition

Classification Class Chemical Composition (%) Related Standards
Cu Zn Pb Fe P Sn Ni Mn Al As Other ISS KS JIS ASTM BS DIN
Tough Pitch
Copper
1 99.9
min
                    ETP D 5301 C1100 H 3300
C1100
B 188
C 11000
2871
C101
C102
1787
ECU58
ECU57
                                   
Phosphorus
Deoxidized
Copper
Low
Residual
99.9
min
      0.004-
0.012
            DLP D 5301 C1201 H 3300
C 1201
B 75
C 12000
2871
C106
1787
SW-CU
High
Residual
99.9
min
      0.015-
0.040
            DHP C1220 C1220 C12200 C106 SF-CU
Phosphorus
Deoxidized
Arsenic Copper
High
Residual
99.9
min
      0.015-
0.040
        0.015-
0.040
  DPA C1420 C1420 C14200 C107 CuAsp


Mechanical Properties

Classification Temper Designation Tensile Test Hardness Test
Outside
diameter
(mm)
Thickness
(mm)
Tensile
Strength
Kgf/mm2
Elongation
(%)
Thickness Rockwell Hardness
HR30T HR15T
Tough Pitch
Copper
0 C11000 5-150 0.5-30 26max 25min 50max -
1/2H 5-150 0.5-25 - - - -
H 5-100 0.5-6 23-28min 3-20min 65-80min -
40min 0.4min - 60max
Phosphorus
Deoxidized
Copper


Phosphorus
Deoxidized
0 C12000 4-150 0.3-30 21min
0L 4-150 0.3-30 21min 40min 0.4min - 60max
1/2H 4-150 0.3-25 25-33 30-60 -
H C12200 4-150 0.3-6 32min 55min -
0 C14200 4-150 - 21min - -
1/2H 4-150 - 25-33 - -
Arsenic Copper H 4-150 0.3-6 32min 55min -


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Mehta Tubes Limited Cupro Nickel Tubes 95/5, 90/10 & 70/30 Heat Exchangers & Condensers
These Cupro Nickel tubes & pipes for Heat Exchangers & Condensers are very important for all Industrial fields. The company has experience in these areas and is able to supply these tubes in accordance with most international standards and special customer requirements.


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Mehta Tubes Limited Cupro Nickel Tubes 95/5, 90/10 & 70/30 Automobile Industries
Cupro Nickel Tubes For Automobile Industry
The Move To Copper-Nickel Tubing
Copper had been proved since the early days to have many good attributes. It was easy to bend and had very high corrosion resistance, but there was concern about its low corrosion-fatigue strength. When copper-nickel was introduced, it displayed corrosion resistance similar to copper, higher general strength and better fatigue strength. Good formability allows ease of flaring and bending, and although the metal cost is greater than that of steel alternatives, copper-nickel is very attractive in view of its extra life, trouble-free installation and safety/reliability characteristics.

Properties of Copper-Nickel Brake Tubing
The copper-nickel alloy used for brake tubing typically contains 10% nickel, with iron and manganese additions of 1.4% and 0.8% respectively. The product conforms to ASTM B466 (American Society for Testing and Materials), which specifies dimensions, tensile strength and yield strength. Formability and internal cleanliness conform to specifications SAE J527, ASTM A254 and SMMT C5B (Society of Motor Manufacturers and Traders). Also, the alloy meets the requirements for pressure containment, fabrication and corrosion resistance for ISO 4038 (International Standards Organization) and SAE J1047.
The mechanical properties of alloy C70600 in comparison with steel and copper are shown in


Dimension Tolerance
Material Ultimate Tensile Strength1000 psi (MPa) Yield Strength 0.5% Ext.under Load 1000 psi (MPa) YElongation % in 2 in. Fatigue Strength (10x7 cycles) 1000 psi (MPa) Burst Pressure* 1000 psi (MPa)
Copper-brazed Steel 48-55 (0.330-0.380) 28-34 (0.190-0.235) 30-40 30 (
0.210)
19.5
(0.135)
C12200-Phosphorus deoxidized Copper 32-38 (0.220-0.265) 10-14 (0.070-0.100) 45-60 10
(0.070)
12 (
0.083)
C70600-Copper Nickel 90-10 48-54 (0.330-0.370) 16-22 (0.110-0.150) 40-55 15
(0.100)
19 (
0.130)


Alloy C70600 is normally supplied as redrawn tubing in the annealed condition. The combination of strength and good ductility give excellent formability.
As copper-nickel is softer than steel, it was first feared that fretting might be a problem. Experience has shown this is not the case.

Corrosion Resistance
For many years prior to its application as a brake tubing material, alloy C70600 had been used in ships, power station condensers and hydraulic lines on tankers, and had displayed excellent resistance to saline conditions. Early tests revealed that copper-nickel has almost the same resistance to burst pressure as steel. In testing, however, when exposed to salt spray over 180 days, steel's burst strength decreases significantly. The copper alloy remains consistently resistant.
For tubes covered with a moist, salty mudpack for six months, brazed steel was severely corroded resulting in perforation of the tubing wall; whereas, only superficial general corrosion was found on the copper-nickel tubing. ISO 4038 and SAE J1047 include a corrosion resistance requirement referring to ISO 3768 asking for a minimum burst pressure of 110 MPa after 96 hours in neutral salt spray. Swedish requirements include a resistance at least equal to 25µ of zinc. In all cases alloy C70600 easily exceeds the required corrosion resistance.

Copper-nickel brake tubing provides superior reliability and assures both manufacturers and vehicle owners improved durability for effective long-life functioning of the brake system.



Plain Tubes


Mehta Tubes Limited Cupro Nickel Rods 95/5, 90/10 & 70/30
Cupro Nickel Rods For 90/10

Chemical Properties
Pb 0.05 Max.
Fe 1.00 - 1.80
Mn 1.00 Max.
Zn 1.00 Max.
Cu Ag Remainder Ni Co 9.00 - 11.00

Mechenical Properties
Light Drawn
Flattening Test Reqd. (After 'O')
U.T.S. ksi 45.00 Min
Y.S. at 0.5% Ext. ksi 35.00 Min.
Expansion Test 30% at 60 degree Reqd. (After 'O')

Annealed Temper
Flattening Test Reqd.
Grain Size at 75 X mm Avg. 0.010 - 0.045
U.T.S. ksi 40.00 Min.
Y.S. at 0.5% Ext. ksi 15.00 Min.
Expansion Test 30% at 60 degree Reqd.
Cupro Nickel Rods For 95/5

Chemical Properties
Sn 0.10 Max.
Pb 0.05 Max
Ni 4.00 - 5.00
Fe 0.10 Max.
Mn 0.25 Max.
As 0.10 Max.
Cu Ag 95.00 - 96.000
Sb 0.01 Max.
Bi 0.0025 Max.
Oxygen (O2) 0.08 Max.

Mechenical Properties
Annealed
U.T.S. MPa 216 - 275 (Strip cut from Ring Tube)
%Elongation at 5.65Sq.Rt So G.L. 40.00 Min. (Strip cut from Ring Tube)
Flattening Test Reqd.
Bend Test Reqd. (180 degree close)


Plain Tubes


Mehta Tubes LimitedCupro Nickel Pancake Coils 95/5, 90/10 & 70/30
Cupro Nickel Pancake CoilsCopper-nickel brake tubing provides superior reliability and assures both manufacturers and vehicle owners improved durability for effective long-life functioning of the brake system.Coils Available in 5 mtr, 10 mtr & 15mtrs.


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