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Cupro Nickel Bolts

In seawater, Copper Nickel 70 / 30 Bolts have excellent corrosion rates which remain low as long as the maximum design flow velocity is not exceeded. This velocity depends on geometry and pipe diameter. Copper Nickel 90 / 10 Bolts have high resistance to crevice corrosion, stress corrosion cracking and hydrogen embrittlement that can be troublesome to other alloy systems.

In seawater, Copper Nickel 70 / 30 Bolts have excellent corrosion rates which remain low as long as the maximum design flow velocity is not exceeded. This velocity depends on geometry and pipe diameter. Copper Nickel 90 / 10 Bolts have high resistance to crevice corrosion, stress corrosion cracking and hydrogen embrittlement that can be troublesome to other alloy systems.


Cupro nickel Hex Bolts naturally form a thin protective surface layer over the first several weeks of exposure to seawater and this provides its ongoing resistance. As a supplier, stockiest, exporter and manufacturer of Cupro nickel Heavy Hex Bolts, we provide these Fasteners in custom-built thicknesses and sizes according to exact requirements of our well-regarded patrons. We offer Cupro nickel Square Bolts at economical prices to our consumers. Cupro nickel Round Head Bolts are available in different dimentions, size, grades & thickness as per the clients requirements. 


Standard Specification For Cupro Nickel Bolts

Dimension
DIN, ASTM, BS and all International Standards
Specification
ASTM / ASME SB 151, SB 152
Standard
Cupro Nickel 70/30 (C71500), Cupro Nickel 90/10(C70600)
Size
M10 to M100
Length
UPTO 5 METERS
Form
Hot Forged and Cold Forged


Cupro Nickel Bolts Equivalent Grades

STANDARDWERKSTOFF NR.UNS
Copper Nickel Cu-Ni 90/102.0872C70600
Copper Nickel Cu-Ni 70/302.0882C71500


Cupro Nickel 70 / 30 Bolts Chemical Composition

Grade
Element
Copper, Cu
70.0







Nickel, Ni
30.0








Cupro Nickel 90 / 10 Bolts Chemical Composition

Element
Content (%)
Cu
88.7
Fe
1.3
Ni
10.0


Copper Nickel Bolts Mechanical Properties

Properties
Metric
Imperial
Tensile strength, ultimate
372-517 MPa
54000-75000 psi
Tensile strength, yield (depending on temper)
88.0-483 MPa
12800-70100 psi
Elongation at break (in 381 mm)
45.0%
45.0%
Charpy impact
107 J
78.9 ft-lb
Machinability (UNS C36000 (free-cutting brass) = 100%)
20%
20%
Shear modulus
57.0 GPa
8270 ksi
Poisson’s ratio
0.34
0.34
Elastic modulus
150 GPa
21800 ksi


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