What Makes Ganpat Industrial The Preferred Choice For Nickel 201 Washers?
Carbon Held At 0.02%
Every heat lab-checked so the low-carbon ceiling is never crossed.
Rated To 677°C
ASME Section VIII approved service ceiling, backed on paper.
Eight Washer Profiles
Flat, spring, split, slot, star, finger, square and round in one PO.
PMI Before Packing
Alloy gun reading taken on the finished washer, not just the bar.
Small Lots Accepted
Trial quantities from 25 pieces move without a bulk commitment.
Nickel 201 Washers At A Glance
- 1Profiles Held: Flat, Spring, Split, Slot, Star, Finger, Square & Round
- 2Size Band: M3 to M100 | 1/8″ to 4″ bolt fit
- 3Governing Specs: ASTM B160 / B162, ASME SB160, DIN 125, DIN 127
- 4Grade Codes: UNS N02201, W.Nr 2.4068 & 2.4061, LC-Ni 99
- 5Carbon Ceiling: 0.02% max — no graphitisation above 315°C
- 6Duty Areas: Caustic Evaporators, Chlorination Retorts, Plater Bars
Mumbai desk: +91 22 6743 7134 • Heat-linked MTC travels with every carton
Commercially pure nickel behaves differently from stainless in caustic, chlorine, or hot alkali. Washers usually reveal these differences first when exposed within demanding joints. We machine and stamp Nickel Alloy 201 Washers from certified materials. We use ASTM B160 bar and B162 plate for production. Carbon remains at 0.02% maximum, preventing graphitisation beyond 315°C operating temperatures. Buyers judging a Nickel 201 Washers Supplier in India prioritize documentation. They often shortlist us during their initial supplier evaluation call. We cut, deburr, anneal, and PMI-verify inside one Mumbai works.
Mumbai · Commercially Pure Nickel Fastener Accessory Exporter
Nickel 201 Washers
Ganpat Industrial machines and presses 201 Nickel Alloy Washers / Nickel 201 Flat Washers / Nickel 201 Machined Washers for caustic plants, chlor-alkali cells and electroplating shops that need a washer which will not graphitise, will not contaminate the product and will not argue with the heat number on the stud.
- ✓ISO 9001:2015
- ✓ASTM B160 / ASME SB160
- ✓EN 10204 Type 3.1 MTC
- ✓PMI Verified Per Lot
- ✓Third-Party Inspection Ready
UNS N02201 and Nickel Alloy 201 Washers Supplier and Stockist in India
Nickel 201 Washers Specification
Nickel 201 Washers Size Band
- Bore: M3 – M100 / 1/8″ – 4″
- Outside Dia: 7mm – 175mm
- Thickness: 0.5mm – 14mm
- Drawing-only shapes accepted
ASTM B160 Nickel Alloy 201 Torque Washer Standards
- ASTM B160 / ASME SB160 (bar)
- ASTM B162 / ASME SB162 (plate)
- DIN 125 & ISO 7089 (plain)
- DIN 127 / DIN 6796 (spring)
Nickel 201 Machined Washers Route
- Bar parting & CNC turning
- Plate blanking & piercing
- Bright anneal, controlled grain
- Deburr, tumble & face grind
Nickel 201 Flat Washers Finish
- Bright annealed, oxide free
- Pickled & passivated
- Mechanically polished
- Electropolished on request
201 Nickel Alloy Washers Material
- UNS N02201 commercially pure Ni
- Nickel plus Cobalt 99.0% min
- Carbon 0.02% max, low-carbon
- Single-phase, face-centred cubic
Nickel 201 Spring Washers Inspection
- PMI on finished washer
- Rockwell B hardness sweep
- Bore, OD & thickness gauging
- Flatness & free-height check
Get Werkstoff NR. 2.4068 and Nickel Alloy 201 Washers Available in Standard Sizes at Lowest Price
Nickel 201 Washers Dimensions & Size Chart
Nickel 201 Square Washers and Nickel 201 Round Washers are cut to the same tolerance band as the plain series below.
Bore Range
M3 – M100
1/8″ to 4″ nominal bolt fit
Outside Diameter
7 – 175 mm
Standard, wide-body & fender
Thickness
0.5 – 14 mm
Plain, spring & conical forms
Tolerance Class
ISO 2768 – m
Tighter class on drawing request
| Bolt Size | Inner Dia d1 | Outer Dia d2 | Thickness s |
|---|---|---|---|
| M6 | 6.4 | 12 | 1.6 |
| M8 | 8.4 | 16 | 1.6 |
| M10 | 10.5 | 20 | 2.0 |
| M12 | 13 | 24 | 2.5 |
| M14 | 15 | 28 | 2.5 |
| M16 | 17 | 30 | 3.0 |
| M20 | 21 | 37 | 3.0 |
| M24 | 25 | 44 | 4.0 |
| M30 | 31 | 56 | 4.0 |
| M36 | 37 | 66 | 5.0 |
| M42 | 43 | 78 | 7.0 |
| M48 | 50 | 92 | 8.0 |
| M64 | 66 | 115 | 9.0 |
| M80 | 82 | 140 | 12.0 |
| M100 | 104 | 175 | 14.0 |
Types Of Nickel Alloy 201 Washers
Get Nickel 201 Washers Supplier in India for a heat-linked MTC before you release the purchase order.
Grade 201 Nickel Alloy Spring Washer
DIN 127 B
DIN 2.4068 Nickel Alloy Plain Washer
DIN 125 A
201 Nickel Alloy C Washer
Slotted Form
Nickel 201 Square Washers
ASME B18.22.1
Grade 201 Nickel Star Washers
DIN 6797
Grade 201 Nickel Alloy Split Washer
DIN 127
B160 Nickel Alloy 201 Flat Washer
ISO 7089
UNS N02201 Finger Spring Washer
Finger Form
Are Nickel Alloy 201 Washers Magnetic ?
Yes — and this catches buyers out, because most corrosion-grade washers are not. Pure nickel is ferromagnetic until it is heated past its Curie point.
Magnetic Below 360°C
A hand magnet will pick the washer up at room temperature
Curie Point 360°C
680°F is the exact switch-over recorded for this grade
Non-Magnetic Above It
Magnetism drops away once service heat crosses 360°C
Maximum Service Temperature Of 201 Nickel Alloy Washers
This is the single reason most enquiries land on Grade 201 instead of Grade 200.
ASME VIII Div 1 Ceiling
677°C
1250°F code-approved service limit
Graphitisation Band
Immune
315°C to 760°C holds no carbon risk
Chlorination Duty
540°C
Proven in chlorine handling equipment
Sulphur Caution
315°C
Keep sulphur compounds off above this
Corrosion Resistance Of UNS N02201 Finger Spring Washer
Caustic is where this grade earns its price. A protective black nickel-oxide film builds during exposure and the attack rate falls with time.
Caustic Soda
Under 1 mpy until concentration passes 75% near boiling
Dry Chlorine & HCl Gas
One of the few practical metals at 500°C plus
Dry Fluorine
Outstanding versus most commercial alloys at heat
Hydrofluoric Acid
Holds well while the fluoride film stays undisturbed
Product Purity
Will not discolour phenol, foods or synthetic fibre
Watch Out For
Strong ammonia, oxidising salts and stagnant sea water
Documentation Supplied With Nickel 201 Square Washers
EN 10204 Type 3.1 Mill Test Certificate
Ladle chemistry, tensile and elongation tied to the heat number
Every Order
PMI / Spark Analysis Report
Confirms nickel above 99% and carbon inside the 0.02% ceiling
Every Order
Dimensional Inspection Sheet
Sampled bore, outside diameter and thickness against your drawing
On Request
Certificate Of Origin & Form A
Chamber-attested set for customs and preferential duty claims
Export Orders
Packing List, Invoice & HSN Split
Carton-wise piece count with GST and HSN breakup on the face
Every Order
Third-Party Inspection Release
Witness call arranged with your nominated inspection agency
On Request
Need A Nickel 201 Washer Cut To Your Drawing?Send bore, outside diameter and thickness — costed quote back inside 24 hours.
201 Nickel Washers Price Per Kg — What Moves It
Nickel is an LME-traded metal, so no honest supplier quotes a fixed annual rate. These six inputs decide your landed number.
Rate Locked For 7 DaysSend us your size list and we hold the quoted figure for a full week, so your own costing does not shift mid-tender.
Nickel 201 Washer Weight & Pieces Per Kg
Washers are sold by weight but consumed by count. Work it out before you raise the requisition — density is 8.89 g/cm³.
M8 Plain Washer
2.1 g
Approx 480 pcs / kg
M12 Plain Washer
7.1 g
Approx 140 pcs / kg
M16 Plain Washer
12.8 g
Approx 78 pcs / kg
M24 Plain Washer
36.6 g
Approx 27 pcs / kg
Figures calculated on DIN 125 Form A dimensions. Spring, star and finger profiles run lighter for the same bore.
Which Stud & Nut Grades Pair With Nickel 201 Flat Washers
Get this wrong and the washer becomes the sacrificial anode of the joint. Match the nobility, not just the thread.
Safest Pairing
- Nickel 201 stud & nut, same heat
- Nickel 200 fasteners, B160
- Keeps the joint galvanically neutral
Accepted Alternatives
- Monel 400, ASTM B164
- Inconel 600, ASTM B166
- Alloy 20 in mixed acid duty
Avoid In Wet Duty
- Plain carbon steel studs
- Zinc or cadmium plated nuts
- Aluminium bearing surfaces
Torque Reality Check
- Annealed nickel yields near 70 MPa
- Under-head bearing stress matters
- Use a wide-body washer on soft flange
Gasket Side Note
- PTFE and graphite both suit
- Keep sulphur binders away at heat
- Confirm before high-temp assembly
Ask Us First
- Send media, temperature & flange face
- We answer with a written pairing
- No charge for the recommendation
Weekly Delivery Of Nickel 201 Washers In Below Countries
| Export to | Continent | Shipping time |
|---|---|---|
|
Qatar |
Asia | 7 Days |
|
Egypt |
Africa | 18 Days |
|
Kuwait |
Asia | 10 Days |
|
Netherlands |
Europe | 30 Days |
MOQ, Ready Stock & Export Lead Time Of 201 Nickel Square Washers
MOQ From 25 Pieces
Trial lots welcome, no minimum tonnage demanded
Ready Stock M6 – M36
Fast-moving plain and spring sizes held on the floor
Made-To-Drawing 7-12 Days
Bar in hand, so custom bores skip the mill queue
Docs Emailed On Day One
Draft invoice and MTC sent before the box is sealed
Air Or Sea, Your Call
DHL for urgent counts, LCL and FCL for bulk weight
Nickel Alloy 201 Washers Application Industries
These are the plants that reorder from us quarter after quarter.
Caustic Soda Evaporators
Chlor-Alkali Cell Rooms
Electroplating Plater Bars
Chemical Reactor Internals
Electronic Component Assembly
Aerospace & Defence Hardware
Food & Synthetic Fibre Lines
Fluorine Handling Equipment
Testing Methods For Grade 201 Nickel Alloy Spring Washer
Every checkpoint below is recorded against the lot, not signed off from memory.
PMI Alloy Verification
Handheld XRF reading logged on the finished washer
Carbon Combustion Test
Proves the 0.02% ceiling that defines Grade 201
Rockwell B Hardness
Confirms the annealed condition across the lot
Dimensional Gauging
Bore, outside diameter and thickness on sampled pieces
Grain Size Check
Fine-to-medium grain retained after bright annealing
Flatness & Burr Scan
Visual and feeler check on both bearing faces
Nickel 201 Spring Washers Chemical Composition
Nickel plus CobaltNi+Co
99.0 min
IronFe
0.40 max
ManganeseMn
0.35 max
SiliconSi
0.35 max
CopperCu
0.25 max
CarbonC
0.02 max
SulphurS
0.01 max
Mechanical Properties Of Nickel 201 Machined Washers
As a Nickel 201 Washers manufacturer in India, we ensure consistency.
Tensile Strength
345-415 MPa
50-60 ksi
Yield Strength (0.2%)
70-170 MPa
10-25 ksi
Elongation (2″)
40-60%
Very Ductile
Hardness, Brinell
75-100 HB
Annealed Bar
Need Tensile And Hardness Values On Paper?Share the size list and standard — we review your document requirement free.
Nickel 201 Washers Equivalent Material
Nickel Alloy WERKSTOFF NR. 2.4068 washers and UNS N02201 washers are the same product under two naming systems.
USA — UNS / ASTM
- UNS N02201
- ASTM B160 / ASME SB160
- ASTM B162 / ASME SB162
- SAE AMS 5553
Germany — DIN / WNr
- W.Nr 2.4068 & 2.4061
- LC-Ni 99 (DIN 17740)
- DIN 17752 bar, DIN 17750 sheet
- VdTÜV 345 approval
UK / ISO / JIS
- BS 3072-3076 (NA12)
- ISO 9723 bar, ISO 6208 sheet
- JIS NW2201
- EN Ni 99.2 low carbon
Monthly Delivery Of Nickel 201 Washers In Below Countries
| Export to | Continent | Shipping time |
|---|---|---|
|
USA |
North America | 40-60 Days |
|
UAE |
Asia | 5 Days |
|
Italy |
Europe | 30 Days |
|
Saudi Arabia |
Asia | 7 Days |
Physical Properties Of Nickel 201 Slot Spring Washer
Density
8.89 g/cm³
0.321 lb per cubic inch
Melting Range
1435-1446°C
2615°F to 2635°F
Modulus Of Elasticity
207 GPa
30 × 10³ ksi in tension
Curie Temperature
360°C
680°F magnetic switch-over
Thermal Conductivity
79.3 W/m·°C
Measured at 20°C, annealed
Electrical Resistivity
0.085 µΩ·m
At 20°C — low, hence plater bars
Specific Heat
456 J/kg·°C
0.109 Btu per lb per °F
Expansion Coefficient
13.2 µm/m·°C
Mean value 25°C to 100°C
Nickel 201 Washers Test Certificates
One Certificate, One Heat, One Traceable Lot
Certificates are raised against the actual heat that produced your washers, signed by our works inspector, and cross-checked with an independent PMI reading before packing. Nothing is issued from a stock template.
What Is The Difference Between Nickel 200 And Nickel 201 Washers?
Same nickel purity, same density, same corrosion behaviour. One line of chemistry separates them — carbon.
Nickel 201 (UNS N02201)
- Carbon capped at 0.02% maximum
- Code-approved to 677°C service
- No graphitisation from 315°C to 760°C
- Lower base hardness, spins and forms easily
- Chosen for hot caustic and chlorination duty
Nickel 200 (UNS N02200)
- Carbon permitted up to 0.15% maximum
- Code-approved only to 315°C service
- Graphite can precipitate at 425°C to 650°C
- Slightly stronger and harder when annealed
- Chosen for ambient and low-heat wet duty
Surface Coating & Finish Of B160 Nickel Alloy 201 Flat Washer
Pure nickel already carries its own protection, so finish here is about cleanliness, friction and appearance.
Bright Annealed
Reducing atmosphere anneal leaves a clean oxide-free face
Pickled & Passivated
Removes scale and forming residue before packing
Mechanically Polished
Smoother bearing face for consistent torque transfer
PTFE Dry Film
Low-friction layer where torque scatter must stay tight
Electropolished
Ultra-clean finish for pharma and high-purity service
Unsure Which Finish Your Duty Needs?Describe the media and temperature — we will name the right one.
Nickel 201 Washers Packaging & Export Standard
VCI Poly Bagging
Counted bags keep faces bright and free of handling marks
Size-Wise Cartons
Each carton labelled with size, grade, heat number and piece count
Fumigated Wooden Pallet
ISPM-15 stamped crates for containerised export movement
Loading Photos Shared
Stuffing images emailed before the container seal goes on
Frequently Asked Questions
Can a Nickel 201 washer be welded to the flange?
It welds readily by TIG, MIG and stick, but oxyacetylene is not suitable for this grade.
What is the HSN code for these washers?
Plain washers fall under HSN 7318.22 and spring or lock types under HSN 7318.21.
Will a magnet stick to it?
Yes at room temperature. It only loses magnetism once heated past 360°C, so a magnet is no substitute for PMI.
Do you supply 201 washers to a customer drawing?
Routinely. Send a PDF or DWG with bore, outside diameter, thickness and tolerance, and we quote against it.
Why is Nickel 201 costlier than a stainless washer?
You are buying nearly solid nickel rather than an iron-based alloy, and the rate tracks the LME nickel price.
We Collaborate With Traders in the Following Cities
| Saudi Arabia | UAE | Oman | Nigeria | South Africa |
|---|---|---|---|---|
| USA | Algeria | Kenya | Angola | Tanzania |
| Ethiopia | Zambia | Ghana | Gabon | Morocco |
| New South Wales | Mozambique | Egypt | Tunisia | – |
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