What is Cupro-Nickel 70-30 /90 -10 Fasteners ?

Sumit Impex is a manufacturer of C-Ni 70/30 attachments widely used in a wide range of marine applications for heat exchangers and condenser piping. Copro-nickel 70/30 Fasteners for offshore, desalination and energy industries, and various navies and in the commercial shipping sectors are currently being used in large quantities. In the high-speed waters and contaminated seawater, in general, the corrosion resistance to Copper Nickel 70/30 Nuts is increased. For the sake of precision, Cu-Ni 70/30 Bolts are shown in a bold form in units where the equivalents of the light type were first reported in the corresponding units. C706 includes copper-nickel fittings as well as condensers and exchanger plates. One of the main applications is C706. For the forging of 90/10 copper-nickel alloys Temperatures between 843 and 954 ° C (1,550 and 1750 ° F) are ideal for the welding of copper 90/10 alloys using spot-soldering, coated metal arc welding, arc-soldering of gas-shielded, oxyacetylene welding, bulb-sweating, brazing, soldering, and seam-soldering processes.



The machinability rate of copper-nickel 90/10 alloys is 20%. Nickel alloys of copper 90/10 have a strong capability to shape cold. Uns C70600 copper-nickel alloys are rubbed at temperatures ranging from 593 to 816 ° C (1100 and 1500 ° F).These copper-nickel nuts are also suitable for control resistance and thermocouples due to their medium-resistance and low-temperature strength coefficient.

The use of regulated concentrations of iron and manganese also offers an exceptional erosion resistance to our 90/10 Bolt Copper Nickel because of the turbulent water containing air bubbles and high-speed silt. Such 90/10 nickel cups often contain essential iron and manganese additions that are needed to maintain an excellent resistance to corrosion.

Cupro-Nickel 70-30 /90 -10 Fasteners Specifications

Grade Cupro-Nickel 70-30 /90 -10 Fasteners
Specification EN, DIN, JIS, ASTM, BS, ASME, AISI
Standard ASTM A182, A276 / ASME SA182, SA276
Size 5 mm To 500 mm
Diameter 10 mm To 200 mm
Length 1000 mm To 3000 mm Long & Above
High Speed Steel (HSS), HCHCR & OHNS in Grade M2, M3, M35, M42, T-1, T-4, T-15, T-42, D2, D3, H11, H13, OHNS-01 & EN52
Finish Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Form Round Bars, Square Bars, Flat Bars, Threaded Bars, Hollow Bars, Hexagonal Bars, Triangular Bars
Application Most commonly used in petroleum refineries, Boilers, Heat exchangers, Condensers, Pipelines, Cooling towers, Steam exhausts, Electric generation plants, On occasion will be found in fertilizer and chemical plants.
Cupro Nickel 70/30 C71500 2.0882
Cupro Nickel 90/10 C70600 2.0872
Cu-Ni 70/30 Cu Pb Mn Fe Zn Ni
88.6 min 0.05 max 1.0 max 1.8 max 1 max 9-11 max
88.6 min 0.05 max 1.0 max 1.8 max 1 max 9-11 max
Density Melting Point Yield Strength (0.2%Offset) Tensile Strength Elongation
8.1 g/cm3 1443 °C (2430 °F) Psi – 35,000, MPa – 241 Psi -80,000, MPa -551 30 %
8.1 g/cm3 1443 °C (2430 °F) Psi – 35,000, MPa – 241 Psi -80,000, MPa -551 30 %

Other Products

Cupro Nickel 70/30 Hex Head Nut Cu-Ni 70/30 Hex Head Nut
Cupro Nickel 90/10 Lock Nut Cu-Ni 90/10 Lock Nut
Cupro Nickel 70/30 Square Nut Copper Nickel 70/30 Square Nut
Cupro Nickel 90/10 Eye Nut Cu-Ni 90/10 Eye Nut
Cupro Nickel 70/30 Lock Nut Cu-Ni 70/30 Lock Nut
Cupro Nickel 90/10 wing Nut Copper Nickel 90/10 wing Nut

Cupro-Nickel 70-30 /90 -10 Fasteners Price List

  • 90/10 Cupro Nickel Bolt/Nut
    US $2500-90/100 / Ton (FOB Price)
  • Bolt/Nut astm B151 90/10
    US $90/10-190/10 / Ton (FOB Price)
  • Cupro Nickel Bolt/Nut 90/10
    US $500-90/100 / Ton (FOB Price)
  • ASTM B151 90/10 Cupro Nickel Bolt/Nut
    US $850-290/10 / Metric Ton (FOB Price)
  • sB151 90/10 Bolt/Nut
    US $1.5-9 / Kilogram (FOB Price)
  • 90/10 Bolt/Nut manufacturer
    US $850-290/10 / Metric Ton (FOB Price)
  • ASTM B151 Gr. 90/10 Bolt/Nut
    US $500-1000 / Ton (FOB Price)


We Sumit Impex Metal Ensure the best quality of Packing , because its play important role especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put extraordinary concern regarding packaging.

We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,

  • Boxes and Crates
  • Shrink-wrapped
  • Carton boxes
  • Wooden pallets
  • Wooden boxes
  • Wooden crates

Testings (Destructive, Non Destructive)

  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Intergranular Corrosion (IGC) Test
  • Pitting Resistance Test
  • Dye Penetrant Test (DP Test)
  • Micro Test
  • Macro Test
  • Hardness Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Radiography Test
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test

Application Industries

These material are not a single material but the name for a family of corrosion resistant steels. Like many scientific breakthrough the origins of stainless steel lies in a lucky accident. From the smallest part of zipper to the largest building skyscraper, stainless steel is an essential part of modern life.Stainless steel’s strength, resistance to corrosion and low maintenance make it the ideal material for a wide range of applications. It is also has a long life cycle and is 100% recyclable.

  • Construction
  • Bridges
  • Petrochemical Industry
  • Ship Building
  • Engineering
  • General Structural Purposes
  • Offshore and Onshore Services

Stainless Steel Sheet Manufacturers

Country we serve / City we deliver

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& Riyadh, Moscow, Toronto, Geoje-si, Karachi, Istanbul, Courbevoie, Milan, Chiyoda, Thane, Aberdeen, Brisbane, Lagos, Lahore, Vung Tau, Faridabad, Ho Chi Minh City, Colombo, Santiago, Jaipur, Jeddah, Ludhiana, Doha, Haryana, Vadodara, Atyrau, Petaling Jaya, Ahvaz, Ernakulam, Gimhae-si, Surat, Sydney, Bengaluru, Mexico City, Ulsan, Madrid, Bangkok, Pimpri-Chinchwad, Thiruvananthapuram, New York, Bhopal, Howrah, Coimbatore, Chennai, Edmonton, Los Angeles, Rajkot, Mumbai, Sharjah, Cairo, Seoul, London, Jakarta, Abu Dhabi, Dammam, Nashik, Dubai, Hyderabad, Houston, Manama, Calgary, Granada, Rio de Janeiro, Navi Mumbai, Al Khobar,Kanpur, Hong Kong, Nagpur, Port-of-Spain, Ankara, Baroda, Algiers, Ahmedabad, Perth, Gurgaon, Singapore, Busan, Montreal, Al Jubail, Secunderabad, Ranchi, Jamshedpur, New Delhi, Tehran, Kolkata, Caracas, Melbourne, Kuwait City, Dallas, Pune, Muscat, Noida, Indore, Hanoi, Chandigarh, La Victoria, Kuala Lumpur, Bogota, Visakhapatnam