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Copper Nickel 70/30 Fasteners

Copper nickel 70/30 fasteners

What are Copper Nickel 70/30 Fasteners?

These high-strength fasteners, composed of copper and nickel (70 and 30 per cent) with inclusions of iron and manganese, are worth the investment. Copper nickel 70/30 fasteners work extensively in marine industries, but their applications extend to heat exchangers, distiller tubes, chemical processing, and boiler components.

The true-blue superpowers of UNS C71500 screws are evident in polluted and fast-moving seawater (~4.5m/s) – conditions where lesser components often fail.

We supply varieties of fasteners in this durable material: from a cupro nickel 70/30 stud bolt to threaded rods, screws, and washers. All our deliverables undergo complete testing via positive material identification and other procedures to assess the hardness, pitting resistance, and chemical composition


Manufacturer of UNS C71500 Hex Bolt in India, Find Spcification For Detail Information

Copper Nickel 70/30 Fasteners Specification


Copper nickel 70/30 fasteners specifications

UNS C71500 Bolt and Nut Delivery Schedules


Country  Name  Delivery Time
Angola   15-20 Days
Nigeria
Ghana
Madagascar
Kenya

Supplier of Cuni 70/30 Nut / Bolt in Flat, Oval, Pan and Truss Head Type, Check Properties

Cuni 70/30 Stud Bolt Equivalent Grade


Grade UNS Werkstoff Nr.
70/30 C71500 2.0882

Copper Nickel 70/30 Nuts Mechanical Properties


Grade Melting point Density Tensilestrength Elongation Yieldstrength(0.2%Offset)
70/30 2260°F 0.323 lb/in3 at 68°F 50000 PSi 30% 20000PSi

How does the tensile strength of Copper Nickel 70/30 Fasteners compare to other materials commonly used in fasteners?

In corrosion resistance and tensile strength, they are superior to their 90-10 counterparts (372 to 517 MPa). The mechanical robustness of a UNS C71500 threaded rod is also more than some stainless steel grades and materials like titanium.

70-30 cupro nickel washers provide a good balance of longevity and safety in multifaceted roles. However, fasteners built of Inconel and Incoloy are likelier to show even greater tensile strength (over 800 Mpa). Running a Charpy Impact test is recommended for components operating in stressful environments.

Types of Cupro Nickel 70/30 Fastener


cunifer 70/30 Fasteners

cunifer 70/30 Fasteners

UNS C71500 Screws

UNS C71500 Screws

Cupro nickel hex bolt

Cupro nickel 70/30 hex bolt

Cu-ni 70/30 Studs

Cu-ni 70/30 Studs

Get WNR 2.0882 Stud Bolt and Threaded Rod in BSF, UNEF, UNJ, UNC and UNF Thread Type, Check Size Chart

Sizes of Cuni 70/30 Bolts


Size Types of copper nickel 70/30 bolt Property class Standards Tensile strength
M4 to M80 Copper Nickel 70/30 Hex Head Bolt / Screws 10.9 ISO 4017 (fully threaded) ISO 4014 (half threaded) 1040N / mm2 min

What makes Copper Nickel 70/30 Fasteners suitable for demanding applications in aerospace, defense, and nuclear industries?

CUNI C71500 nuts are ideal for critical applications like aerospace and nuclear plants. These top-quality fasteners can operate optimally at temperatures as steep as 1038°C or 1900°F.

A DIN 2.0882 anchor bolt frequently works in nuclear power generation, fuel reprocessing, and pickling tanks due to its ability to withstand abrasive agents. In the defense sector, it gets used for sonar equipment, submarine bolts, and propeller shafts.

A CUNI C71500 hex bolt also avoids biofouling, pitting, stress cracking, and impingement. High-velocity waters and turbulence are not a problem for these hardy products. Ease of fabrication and welding is another point in favour of CUNI 70/30 heavy hex bolts.

Cupro Nickel 70/30 Washers in Half Point, Cone Point, Sheared and Chamfer End as per ASME B18.2.2 & DIN 933, Find Torque Chart

UNS C71500 Stud Bolt Torque Chart


Flange Size   16 1/2 1 10 2 1-1/2 3 4 2-1/2 3-1/2 5 24 14 8 12 1-1/4 18 3/4 6 20
B16.5 Cl 150 RF Torque / Round (ft-lbs) Dwg/No. (bolts) 16 4 4 12 4 4 4 8 4 8 8 20 12 8 12 4 16 4 8 20
Stud Bolts Tighten Sequence Bolts Size 1 1/2 1/2 7/8 5/8 1/2 5/8 5/8 5/8 5/8 3/4 1-1/4 1 3/4 7/8 1/2 1-1/8 1/2 3/4 1-1/8
1st 147 10 15 95 40 20 40 40 40 40 60 300 147 60 95 20 213 13 60 213
2nd 294 20 30 190 80 40 80 80 80 80 120 600 294 120 190 40 426 27 120 426
Final 490 30 50 320 120 60 120 120 120 120 200 1,000 490 200 320 60 710 40 200 710
B16.5 Cl 150 FF/ Gaskets Stud Bolts Tighten Sequence Bolts Size 1 1/2 1/2 7/8 5/8 1/2 5/8 5/8 5/8 5/8 3/4 1-1/4 1 3/4 7/8 1/2 1-1/8 1/2 3/4 1-1/8
Torque / Round (ft-lbs) Dwg*/No. 16 4 4 12 4 4 4 8 4 8 8 20 12 8 12 4 16 4 8 20
1st 147 20 20 95 40 20 40 40 40 40 60 300 147 60 95 20 213 20 60 213
2nd 294 40 40 190 80 40 80 80 80 80 120 600 294 120 190 40 426 40 120 426
Final 490 60 60 320 120 60 120 120 120 120 200 1,000 490 200 320 60 710 60 200 710
Check NES 780 Screws Weight Chart and Chemical Composition

Cupro Nickel 70/30 Hex Bolts Chemical Composition


Grade Mn Cu Pb Fe Ni Zn
70/30 1 max 65.0 min 0.5 max 0.4-1.0 29-33 1 max

WNR 2.0882 Fasteners Weight Chart


Lengths #3 #2 #4 #6 #5 #8 #12 #10 1/4″ 3/8″ 5/16″
1/4 0.80 0.60 1.00 1.7 1.4 2.8 5.6 4.3 8.5
3/16 0.70 0.50 0.90 1.5 1.2 2.5 3.9
5/16 0.90 0.60 1.20 1.9 1.5 3.1 6.1 4.6 9.1 16.7
7/16 1.00 0.80 1.50 2.2 1.9 3.6 6.9 5.4 10.4 30.7 18.8
3/8 0.90 0.70 1.30 2.1 1.7 3.4 6.5 5.0 9.8 29.2 17.7
1/2 1.10 0.80 1.60 2.4 2.0 3.9 7.4 5.8 11.1 32.2 19.8
5/8 1.30 1.00 1.80 2.8 2.3 4.5 8.3 6.6 12.4 35.1 21.9
9/16 1.20 0.90 1.70 2.6 2.2 4.2 7.8 6.2 11.7 33.6 20.9
1/8 0.55 0.40 0.70 1.4 1.1
3/4 1.50 1.10 2.10 3.2 2.6 5.0 9.2 7.3 13.6 38.0 24.0
1″ 1.90 1.40 2.50 3.9 3.4 6.2 11.0 8.9 16.1 44.0 28.8
7/8 1.70 1.30 2.30 3.5 3.0 5.6 10.1 8.1 14.9 41.0 26.1
1-1/8″ 2.00 1.50 2.80 4.3 3.8 6.7 11.9 9.6 17.4 47.0 30.2
1-1/2″ 2.50 1.80 3.50 5.3 4.7 8.3 14.7 11.9 21.2 55.8 36.5
1-1/4″ 2.20 1.60 3.00 4.6 4.1 7.3 12.8 10.4 18.7 49.8 32.3
1-3/4″ 2.90 2.10 4.00 6.1 5.3 9.4 16.5 13.5 23.7 61.7 40.7
2-1/4″ 3.60 2.60 5.00 7.6 6.7 11.8 20.1 16.6 28.8 73.5 19.0
2″ 3.30 2.40 4.50 6.8 6.0 10.6 18.3 15.0 26.2 67.6 44.8
2-1/2″ 3.90 2.80 5.50 8.3 7.3 12.9 22.0 18.1 31.3 79.5 53.2
3″ 4.70 3.40 6.50 9.8 8.6 15.0 25.6 21.2 36.4 91.3 61.5
2-3/4″ 4.30 3.10 6.00 9.1 7.9 13.9 23.8 19.7 33.9 85.3 57.3

American Standards of UNS C71500 Screws


Screws Type GRADE SIZE ASTM ISO ASME
Socket low head cap screws 10.9 M4 to M20      
Socket head cap screws 12.9 M1.6 to M64 A574M 4762 B18.3.1 M
Socket head shoulder screws 012.9 M6 to M24     B18.3.3M
Button head socket screws 012.9 M3 to M12 F835M 7380 B18.3.4M
Countersunk socket head screws 012.9 M3 to M20 F835M 10642 B18.3.5M
Flange button head socket screws 012.9 M3 to M10 F835M    
Flat point socket set screws 45H M6 to M12 F912M 4026 B18.3.6M
Knurled point socket set screws 45H M3 to M20 F912M 4029 B18.3.6M
Taper pressure plug M8 to M22    
Cone point socket set screws 45H M3 to M12 F912M 4027 B18.3.6M
plain point socket set screws 45H M3 to M20 F912M 4029 B18.3.6M

Applications of Cuni 70/30 Threaded Rod


  • Sea water equipment
  • Heat exchangers
  • Petrochemicals
  • Gas processing
  • Specialty chemicals
  • Pharmaceutical equipment
  • Chemical equipment
  • Power generation
  • Condensers
  • Off-shore oil drilling industry
  • Pulp and paper industry