Marine-Grade Cupro Nickel Washers That Refuse To Corrode, Foul Or Fail
90/10 & 70/30 Grades
C70600 and C71500 supplied with heat-wise traceability.
Seawater Proven
Built for hulls, intakes and brine lines.
M3 To M64 Range
Standard DIN and ISO sizes plus drawing-based cuts.
MTC 3.1 Every Lot
Chemical and mechanical results on paper.
Worldwide Dispatch
Export packing with door or port delivery.
Cupro Nickel Washers Quick Facts
- 1Product Range: Flat, Spring, Split, Lock,
Star, Square, Slot, Sealing & Conical - 2Size Range: M3 To M64, Custom Cut On
Drawing - 3Standards: ASTM SB152, ASTM B 151, DIN 125,
ISO 7089 - 4Grades: Cu-Ni 90/10 (C70600) & 70/30
(C71500) - 5Finish: Mirror Polish, Natural Mill,
Satin - 6Certificate: EN 10204 3.1 Mill Test
Report
Or call our Mumbai office: +91 22 6743 7134
• Every batch dispatched with heat-wise MTC as per EN 10204 3.1
Cu-Ni Alloy Punched Washer stock leaves our Mumbai warehouse within days. Shipyards prefer Cupro Nickel Round Washer for seawater bolting that never rusts. Our Cupro Nickel Washers suits deck, hull and offshore fastening jobs. ASTM SB152 Cu-Ni Flat Washer is cut, checked and packed in-house. Cu-Ni Spring Washer and Cu-Ni Split Washer hold torque under vibration. Each Copper Nickel Lock Washer ships with heat-wise test certificate copies.
Mumbai · Cu-Ni Washer Exporter
Cupro Nickel Washers – Precision Washers for Demanding Applications
Need washers that survive salt water for decades? As a Cupro Nickel Washers Supplier in
India, we ship flat, spring, split, star, square, slot and sealing washers with full traceability to
shipyards, desalination plants and offshore contractors.
- ✓ISO 9001:2015
- ✓EN 10204 3.1 MTC
- ✓ASTM SB152 & B 151
- ✓Third-Party Inspection
- ✓Ready Stock
EN 10204 3.1 Certified ASTM SB152 Cu-Ni Flat Washer Manufacturer in India Available in Size Range M3 to M64
Cupro Nickel Washers Specification
ASTM SB152 Cu-Ni Flat Washer Material Grade
- Cu-Ni 90/10 – UNS C70600
- Cu-Ni 70/30 – UNS C71500
- CuNi10Fe1Mn / CuNi30Mn1Fe
Cu-Ni Spring Washer Size Coverage
- M3 To M64 (DIN 125 / ISO 7089)
- Thickness 0.5 To 10 mm
- Custom OD & ID On Drawing
Cu-Ni Spherical Washer Governing Standards
- ASTM SB152 / B152
- ASTM B 151 / B122
- DIN 125, DIN 127, DIN 6798
Cupro Nickel Round Washer Form Supplied
- Punched From Plate & Strip
- Laser / Waterjet Cut Large Sizes
- Machined To Tight Tolerance
Cu-Ni Conical Washer Finish Options
- Mirror Polish
- Natural Mill Finish
- Satin / Tumbled
Copper Nickel Star Washer Inspection
- Spectro & Hardness Check
- Dimensional Report
- Third-Party On Request
Cu-Ni Flat Washer Size Chart (M3 To M64)
| Bolt Size | Inner Dia (d1) | Outer Dia (d2) | Thickness (s) | Weight (kg / 1000 pcs) |
|---|---|---|---|---|
| M3 | 3.2 | 7 | 0.5 | 0.136 |
| M4 | 4.3 | 9 | 0.8 | 0.351 |
| M5 | 5.3 | 10 | 1 | 0.505 |
| M6 | 6.4 | 12 | 1.6 | 1.158 |
| M8 | 8.4 | 16 | 1.6 | 2.083 |
| M10 | 10.5 | 20 | 2 | 4.069 |
| M12 | 13 | 24 | 2.5 | 7.144 |
| M16 | 17 | 30 | 3 | 12.87 |
| M20 | 21 | 37 | 3 | 19.548 |
| M24 | 25 | 44 | 4 | 36.821 |
| M30 | 31 | 56 | 4 | 61.087 |
| M36 | 37 | 66 | 5 | 104.865 |
| M42 | 45 | 78 | 8 | 228.001 |
| M48 | 52 | 92 | 8 | 323.549 |
| M56 | 62 | 105 | 10 | 504.211 |
| M64 | 70 | 115 | 10 | 584.537 |
Need A Size Not On This Chart?Send your drawing; we cut Cu-Ni washers to your OD, ID and
thickness.
Weekly Delivery Of Cupro Nickel Washers In Below Countries
Regular export lanes make us a reliable Cupro Nickel Washers Supplier in India for repeat buyers.
| Export To | Continent | Shipping Time |
|---|---|---|
Morocco |
Africa | 45 Days |
Peru |
South America | 45 Days |
Algeria |
Africa | 45 Days |
Bahrain |
Asia | 9 Days |
Cupro Nickel Washer Types Buyers Order Most
Working from Mumbai, we are a Cupro Nickel Washers Manufacturer in India for standard and drawing-based Cu-Ni
washers.
Copper Nickel Star Washer
Star
Copper Nickel Square Washer
Square
ASTM B 151 Cu-Ni Alloy Machine Washer
Machine
Cu-Ni Flat Spring
Flat Spring
Cupro Nickel Sealing Washer
Sealing
Cu-Ni Flat Washer
Flat
Cu-Ni Split Washer
Split
Copper Nickel Slot Washer
Slot
Cupro Nickel Sealing Washer Price Factors
Get Today’s Cu-Ni Washer RateSend grade, size and quantity. Our team replies with
a firm quote fast.
Cupro Nickel Washer HSN Code & GST Rate
HSN Code
7415 2100
Washers incl. spring washers
GST Rate
18%
Applicable on domestic supply
Chapter
74
Copper & articles thereof
Export
IGST / LUT
Zero-rated on export
90/10 Vs 70/30 Cupro Nickel Round Washer
Cu-Ni 90/10 (C70600)
- Best value for seawater lines
- Excellent biofouling resistance
- Better cold forming
- Popular for hull & piping bolts
Cu-Ni 70/30 (C71500)
- Higher strength & erosion resistance
- Handles fast-flowing brine
- Suited to hot, high-duty service
- Preferred for desalination
Buy Copper Nickel Square Washer with Mirror Polish & Natural Finish for Marine & Shipbuilding Industry
Where Copper Nickel Slot Washer Is Used?
Shipbuilding
Desalination Plants
Offshore Platforms
Seawater Piping
Heat Exchangers
Power Stations
Marine Hardware
Chemical Plants
Not Sure Whether 90/10 Or 70/30 Fits?Tell us the medium and temperature; we suggest the right
grade.
Cu-Ni Alloy Punched Washer Chemical Composition
| Element | CuNi 90/10 (%) (C70600 ) | CuNi 70/30 (%)(C71500 ) |
|---|---|---|
| Copper (Cu) | Balance, ~88.6-91.0 | Balance, ~65.0-70.0 |
| Nickel (Ni) | 9.0-11.0 | 29.0-33.0 |
| Manganese (Mn) | 1.0 max | 1.0 max |
| Iron (Fe) | 1.0-1.8 | 0.4-1.0 |
| Zinc (Zn) | 1.0 max | 1.0 max |
Iron (Fe)
1.0 – 1.8%
C70600
Iron (Fe)
0.40 – 1.0%
C71500
Manganese (Mn)
1.0% Max
Both Grades
Zinc / Lead
1.0% / 0.05% Max
Both Grades
Cu-Ni Spring Washer Mechanical Properties
Tensile Strength
275 / 310 MPa
C70600 / C71500 (Min)
Yield Strength
105 / 125 MPa
0.5% Ext, Annealed
Density
8.94 / 8.95 g/cm³
C70600 / C71500
Melting Range
1100–1145 / 1170–1240 °C
Solidus
– Liquidus
Copper Nickel Star Washer Equivalent Grades
USA – UNS / ASTM
- UNS C70600 / C71500
- ASTM B151, B122, SB152
Germany – DIN / EN
- CuNi10Fe1Mn / CuNi30Mn1Fe
- W.Nr 2.0872 / 2.0882
- EN CW352H / CW354H
Japan – JIS
- JIS C7060
- JIS C7150
Surface Finish Options On Cu-Ni Spherical Washer
Finish 01
Mirror Polish
Bright, low-friction face
Finish 02
Natural Mill
As-punched, clean edge
Finish 03
Satin Brushed
Uniform matte look
Finish 04
Tumble Deburred
Smooth, burr-free rim
How A Cu-Ni Conical Washer Is Manufactured?
Plate Selection
Cu-Ni plate or strip checked against heat
Punch / Cut
Press, laser or waterjet blanking
Deburr & Size
Edges cleaned, flatness corrected
Polish / Finish
Mirror or natural surface applied
Inspect & Pack
Final check, marking and packing
Testing Methods For ASTM B 151 Cupro Nickel Washers
Spectro Analysis
Confirms Cu and Ni content
Tensile Test
Strength verified on lot strip
Hardness Test
Rockwell or Vickers reading
Dimensional Check
ID, OD and thickness gauged
Visual Inspection
Burrs, cracks and scratches screened
Flatness Check
Warp measured on surface plate
Documents Shipped With Cu-Ni Flat Spring Orders
EN 10204 3.1 MTC
Heat-wise chemical & mechanical results
Certificate
Inspection Report
Dimensional and visual findings
Quality
Packing List & Invoice
Weights, marks and quantity details
Shipping
Certificate Of Origin
Chamber-attested on request
Export
Third-Party Report
SGS, BV or TUV witnessed
Optional
Need Custom Cu-Ni Washers Punched To Drawing?Tooling advice and samples available before bulk
production.
Export Packing Of Cu-Ni Split Washer
Individual Poly Bag
Separates pieces to prevent scratches
Inner Carton
Sized by quantity and weight
Wooden Box / Pallet
Fumigated ISPM-15 export packing
Marking & Labels
Grade, size, heat no. on every box
MOQ, Lead Time & Payment For Cupro Nickel Washers
MOQ
1 Piece
Samples & bulk both
Stock Items
3 – 5 Days
Standard sizes
Custom Orders
2 – 3 Weeks
Drawing based
Payment
T/T · L/C
Other terms on request
Monthly Delivery Of Cupro Nickel Washers In Below Countries
Steady monthly consignments keep Cu-Ni washer supply reliable for buyers worldwide.
| Export To | Continent | Shipping Time |
|---|---|---|
Egypt |
Africa | 18 Days |
Netherlands |
Europe | 30 Days |
Kuwait |
Asia | 10 Days |
Nigeria |
Africa | 30 Days |
Frequently Asked Questions
What is the current Cupro Nickel Washers price per kg in India?
Price depends on grade, size and quantity; share your requirement for a same-day quotation.
Which size range do you offer in Cu-Ni Flat Washer?
We supply Cu-Ni flat washers from M3 to M64, and custom sizes on drawing.
What is the HSN code for Cupro Nickel Washer?
Cupro nickel washers fall under HSN 7415 2100, attracting 18 percent GST in India.
Do you provide Copper Nickel Lock Washer with test certificates?
Yes, every lot includes EN 10204 3.1 certificate with chemical and mechanical results.
Is there a minimum order quantity for Cu-Ni Split Washer?
No fixed MOQ; we ship single pieces and full container loads on request.
Check Out Your Nearby Locations For Fastest Deliveries
| Location | Location |
|---|---|
| Texas (USA) | California (USA) |
| Al Jubail (Saudi Arabia) | Dubai (UAE) |
| Dammam (Saudi Arabia) | Abu Dhabi (UAE) |
| Riyadh (Saudi Arabia) | Houston (USA) |
| Al Khobar (Saudi Arabia) | Indiana (USA) |
6 Reasons to choose Ganpat Industrial Corporation
- Distributor of Heat Exchanger parts and Alloys for High Temperature applications.
- Stockholder and importer of Ferrous and non ferrous metals.
- Wide stock of prime quality austenitic and Ferritic Stainless Steel for Extreme pressure environment.
- Marine grade steel at lowest price in Mumbai.
- Compare Price per KG in India and China.
- Offer Resale price to local suppliers, traders and wholesalers in UAE, Saudi Arabia, Egypt, and USA