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Copper Nickel Fasteners
[vc_empty_space height=”32px”]Copper Nickel Fasteners are available in two variations viz 70-30 (C70600) and 90-10( C71500 ) .C70600 Copper nickel is stronger as of the two with a yield strength of 150 Mpa in annealed condition as compared to 120 Mpa of C75100 Copper Nickel. Especially in case of cupro nickel 70-30 bolts as compared to copper nickel 70-10 bolts where tensile is the deciding factor due to high level of corrosion in marine applications. Torqbolt is a well known Copper Nickel Fasteners supplier in India. [/vc_column_text][vc_empty_space height=”32px”][/vc_column][vc_column width=”1/4″][vc_column_text]
[/vc_column_text][vc_column_text][/vc_column_text][/vc_column][/vc_row][vc_row][vc_column width=”1/1″][vc_empty_space height=”30px”][vc_separator color=”grey” align=”align_center”][vc_empty_space height=”30px”][/vc_column][/vc_row][vc_row][vc_column width=”1/1″][vc_tour interval=”0″ style=”tab-style-three”][vc_tab title=”Equivalent Designation” tab_id=”ffeb78b1-8876-0″][vc_column_text]Copper Nickel Alloys are well known worldwide with different trade names and unique numbers. Following chart shows the exact equivalent designations corresponding to the cross reference of copper nickel alloys. [vc_empty_space height=”30px”]
| Alloy | UNS No. | British Standard | En name | Werkstoff No. |
|---|---|---|---|---|
| CuNi 70/30 | C71500 | 2871 | CuNi30Fe | 2.0882 |
| CuNi 90/10 | C70600 | 2871 | CuNi10Fe | 2.0872 |
[/vc_column_text][/vc_tab][vc_tab title=”Copper Nickel 90-10 Properties” tab_id=”1444402892208-2-8″][vc_column_text]Cupro nickel 90-10 consists of 90% copper and 10% nickel , which is less durable as compared to 70-30 alloys. This alloy is cheaper and easily available. [vc_empty_space height=”15px”]
| Copper Nickel 90-10 | Cu | Fe | Pb | Mn | Ni | Zn |
|---|---|---|---|---|---|---|
| Min/max | Rem | 1.0-1.8 | 0.05 | 1.00 | 9.0-11.0 | 1.00 |
| Nominal | 88.60 | 1.40 | – | – | 10.0 | – |
Notes: (1)Cu value includes Ag.
(2)Ni value includes Co.
(3)Cu + Sum of Named Elements, 99.5% min. [vc_empty_space height=”30px”]
| Alloy | Yield strength | Tensile strength | Elongation |
|---|---|---|---|
| Min 0.2% Mpa | Min Mpa | Min % | |
| Cupronickel 90-10 | 110-393 | 303-414 | 42 |
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| Alloy | Density | Elastic Modulus | Mean Coefficient of Thermal | Thermal Conductivity | Specific Heat |
|---|---|---|---|---|---|
| (Kg/m3) | (Gpa) | Expansion(μm/m/°C) | (W/m.K) | 0-100°C | |
| Cupronickel 90-10 | 8.94 | 140 | 17.1 | 45 | 377 |
[vc_empty_space height=”30px”] CuproNickel 70-30 is a well-known alloy as compared to cupro nickel 90-10, with higher additions of nickel as compared to the lower alloy.[/vc_column_text][/vc_tab][vc_tab title=”Copper Nickel 70-30 Properties” tab_id=”1444402958696-4-9″][vc_column_text]It has 70% copper and 30% nickel with a higher toughness and strength at hardened stages, Widely used due to superior properties.
| Copper Nickel 70-30 | Cu | Fe | Pb | Mn | Ni | Zn |
|---|---|---|---|---|---|---|
| Min/max | Rem | 0.4-1.0 | 0.05 | 1.00 | 29.0-33.0 | 1.00 |
| Nominal | 69.50 | 0.50 | – | – | 30.0 | – |
Notes: (1)Cu value includes Ag.
(2)Ni value includes Co.
(3)Cu + Sum of Named Elements, 99.5% min. [vc_empty_space height=”30px”]
| Alloy | Yeild strength | Tensile strength | Elongation |
|---|---|---|---|
| Min 0.2% Mpa | Min Mpa | Min % | |
| Cupronickel 70-30 | 88.0-483 | 372-517 | 45 |
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| Alloy | Density | Elastic Modulus | Mean Coefficient of Thermal | Thermal Conductivity | Melting Point |
|---|---|---|---|---|---|
| (Kg/m3) | (Gpa) | Expansion(μm/m/°C) | (W/m.K) | (nΩ.m) | |
| Cupronickel 70-30 | 8.94 | 117 | 16.2 | 29 | 1171 |
[/vc_column_text][/vc_tab][vc_tab title=”Applications” tab_id=”5ff6aa69-0984-4″][vc_column_text]Marine Usage
Due to excellent resistance towards marine water corrosion, more than 90% it used in the marine industry with attachments of copper nickel flanges, pipes and fittings. Salt water flanged connections are very well protected with copper nickel bolts set with cupro nickel nut and washers. Propeller shafts, distiller tubes, ferrule fittings all are attached with cupro nickel screws with nuts as a pair. [vc_empty_space height=”30px”]Automotive Use
Copper nickel bolts are quite famous for automotive components like the steering tube and brake lines. [vc_empty_space height=”30px”]Fabrication
Copper Nickel Studs used for pressure vessels, heat exchangers, condenser plates, valve bodies and evaporators are very much in demand.[/vc_column_text][/vc_tab][/vc_tour][/vc_column][/vc_row]