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Copper-Nickel Fasteners

Copper Nickel 90/10 and 70/30 fasteners, Cu-Ni 90/10 and 70/30 fasteners Manufacturer, Exporter & Suppliers in India.

ASTM B151 UNS C71500 70/30 and ASME SB151 UNS C70600 90/10 fasteners Suppliers.

Kalapataru Piping Solutions is a leading manufacturer of copper nickel 70/30 fasteners & copper nickel 90/10 fasteners. Copper Nickel 70/30 Fasteners, comprising chromium, iron, copper, manganese, silicon, carbon, and titanium, are meticulously engineered to meet stringent physical and mechanical property requirements. These fasteners come in various forms, adhering to diverse specifications such as grade, tolerance, condition, dimension, application, surface finish, shape, size, thickness, width, form, and length.

Widely used in industries like chemical processing, food processing, petrochemicals, and power generation, these fasteners exhibit excellent resistance to alkaline solutions and neutrals. While effective conductors of heat, they display lower electrical conductivity than other fasteners. Special care is needed to prevent galvanic corrosion when in contact with other metals in acidic environments. Known for toughness, strength, and remarkable resistance at elevated temperatures, these fasteners undergo thorough testing, including positive material tests, pitting resistance tests, hardness tests, chemical tests, and micro/macro tests. For safe transportation, we offer various packaging options like wooden boxes, bundles, and plastic boxes.

Copper Nickel 90-10 Fasteners, composed of 90% copper and 10% nickel, along with elements like manganese and iron, are well-suited for architectural and marine applications. They exhibit good toughness and ductility at elevated temperatures, superior resistance to corrosion, stress corrosion, erosion, and hydrogen embrittlement. These fasteners also display excellent mechanical properties at cryogenic temperatures, ensuring high inherent resistance to fouling and remarkable formability. With good thermal stability and moderate strength at high temperatures, these fasteners are a reliable choice for various applications.

Copper Nickel Fasteners Specifications

Copper nickel fasteners, in 90-10 and 70-30 alloys, are crafted for top-notch performance. The 90-10 type excels in marine settings, tackling seawater corrosion, while the 70-30 variant finds the perfect balance for strength and corrosion resistance. Ideal for maritime and offshore use, these fasteners guarantee durability and longevity, thanks to their high-quality materials and precise manufacturing.

 

Specifications ASTM / ASME SB 151, SB 152
Standards DIN, ASTM, BS and all International Standards
Length 3 millimeter – 200 millimeter
Bolt / Screw Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Nuts Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Washers Size M1 – M64 | #4 to 3″ | Custom Sizes
Grade UNS NO. C92200 & UNS NO. C83600, UNS NO. C70600 ( CU -NI- 90/10), C71500 ( CU -NI- 70/30), ASTM / ASME SB 152 UNS NO C10100, C10200, C10300, C10800, C12000, C12200.
Type Nuts, Bolts, Screws, Hex Set Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, U-Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.

 

Copper Nickel Fasteners Chemical Composition

Crafted from 90-10 cupro nickel (90% copper, 10% nickel) and 70-30 cupro nickel (70% copper, 30% nickel), these fasteners ensure durability and fight corrosion. The 90-10 type excels in seawater, tackling corrosion and biofouling, while the 70-30 type offers strength and thermal stability, perfect for tough marine and industrial settings. With a strong defense against corrosion, these fasteners guarantee reliability and long life, crucial in maritime, offshore, and chemical processing systems.

Element

Cu – Ni 90/10

Cu – Ni 70/30

Cu

88.6 min

65.0 min

Pb

.05 max

.05 max

Mn

1.0 max

1.0 max

Fe

1.8 max

0.4-1.0

Zn

1 max

1 max

Ni

9-11 max

29 – 33

Mechanical Properties of Copper Nickel Fasteners

Grade

Density

Melting Point

Tensile Strength

Yield Strength (0.2%Offset)

Elongation

Cu-Ni 90/10

0.323 lb/in3 at 68 F

2260 F

50000 psi

20000 psi

30 %

Cu-Ni 70/30

0.323 lb/in3 at 68 F

2260 F

50000 psi

20000 psi

30 %

Sizes Of Copper Nickel Fasteners

Check out various sizes of copper nickel fasteners collection, tailored for versatile applications. From compact to robust, find the perfect fit for your business needs.

Copper Nickel 70/30 Bolt Type

SIZE

PROPERTY CLASS

TENSILE STRENGTH

STANDARD

Copper Nickel 70/30 Hex Head Bolt / Screws

M4 to M80

10.9

1040N / mm2 min

ISO 4017 (Full Thread)

ISO 4014 (Half Thread)

 

Screws Type

SIZE

GRADE

ASME

ISO

ASTM

Socket Head Cap Screws

M1.6 to M64

12.9

B18.3.1 M

4762

A574M

Socket Low Head Cap Screws

M4 to M20

10.9

 

 

 

Socket Head Shoulder Screws

M6 to M24

012.9

B18.3.3M

 

 

Countersunk Socket Head Screws

M3 to M20

012.9

B18.3.5M

10642

F835M

Button Head Socket Screws

M3 to M12

012.9

B18.3.4M

7380

F835M

Flange Button Head Socket Screws

M3 to M10

012.9

 

 

F835M

Knurled Point Socket Set Screws

M3 to M20

45H

B18.3.6M

4029

F912M

Flat Point Socket Set Screws

M6 to M12

45H

B18.3.6M

4026

F912M

Dog Point Socket Set Screws

M3 to M20

45H

B18.3.6M

4028

F912M

Cone Point Socket Set Screws

M3 to M12

45H

B18.3.6M

4027

F912M

Plain Point Socket Set Screws

M3 to M20

45H

B18.3.6M

4029

F912M

Taper Pressure Plug

M8 to M22

 

 

 

Nuts Type

SIZE

PROPERTY CLASS

STANDARD

Hex Nut

M6 to M42

10

ISO 4032

Nylock Nut

M6 to M20 (Gr.8)

M10 to M24 (Gr.10)

8 & `10

DIN 982

Nylock Nut

M6 to M20 (Gr.8)

M10 to M24 (Gr.10)

8 & 10

DIN 985

Hex Weld Nut

M6 to M12

8

DIN 929

 

Washers Type

SIZE

HARDNESS

STANDARD

Square Section Spring Washer

3mm to 39mm

HV (430 to 530)

DIN 7980

Flat Section Spring Washer

3mm to 39mm

HV (430 to 530)

DIN 127 B

Hardened Washer

12mm to 30mm

HV (300 to 370)

IS 2016

Hardened Steel Washer

12mm to 56mm

Rockwell 26 to 45 (HDG)

Rockwell 38 to 45 (Coated)

ASTM F436M

Types of Copper-Nickel Fasteners

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