What Makes Ganpat Industrial Corporation Your Trusted Monel 400 Washer Partner?
Since 1997
Nearly three decades stocking nickel alloy fasteners and washers in Mumbai
Manufacturer & Stockist
Forged fasteners, bars and washers plus stocked pipes, plates and tubes
ISO 9001:2015
Quality management system certified and independently audited every year
PED & Petrofac Approved
Cleared for European pressure equipment projects and Petrofac vendor lists
Full Documentation
Mill test certificate, PMI report and NABL lab report on every batch
Monel 400 Washers Key Points
- 1Material Basis: Nickel-Copper Alloy • UNS N04400 • Werkstoff 2.4360
- 2Governing Standard: ASTM F467 • ASME SF467 • ASTM B164 Chemistry Basis
- 3Size Range: Metric M3 To M56 • Imperial 3/16″ To 2″
- 4Non-Magnetic: Stable, Moderate Permeability, Suited To Sensitive Equipment
- 5Equivalents: BS NA13 • DIN NiCu30Fe • GOST МНЖМц 28-2.5-1.5
- 6Forms Supplied: Flat, Spring, Lock, Spherical, Conical & Star Washer
Mumbai works desk • WhatsApp +91 85912 64209 • Same-day size-wise quote
Ganpat Industrial Corporation has stocked nickel alloy fasteners since 1997. Monel 400 Washers carry a nickel-copper base with no chromium. This gives outstanding resistance to hydrofluoric acid and seawater. The alloy stays non-magnetic across normal ambient temperature ranges. We supply flat, spring, spherical, lock and star washer types. Every washer is produced to ASTM F467 chemical limits. Sizes span metric M3 to M56 and imperial 3/16 inch to 2 inch. Each dispatch carries an EN 10204 3.1 mill test certificate. Boxes are packed in standard lots of 50, 100 or 200. We regularly supply this range for desalination and offshore projects. We also export to Dubai, Jebel Ali, Rotterdam and Houston.
Mumbai · Non-Magnetic Nickel-Copper Washer Stockist & Exporter
Order ASTM F467 Monel 400 Flat Washer Supplier in India
Ganpat Industrial supplies UNS N04400 Monel 400 Washers built for saline and acidic service. Stock covers spring, flat, spherical and lock types across metric and imperial sizes.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
UNS Designation
N04400
Werkstoff Nr. 2.4360
Nickel + Copper
63% Min Ni
28 – 34% Cu balance
Governing Standard
ASTM F467
Material basis of ASTM B164
Corrosion Edge
HF Acid Resistant
Also resists seawater and brine
Non-Magnetic ASTM F467 400 Monel Machine Washer Manufacturer in India with Hydrofluoric Acid Resistance
Specification Of Monel 400 Washers
Every Monel 400 Washers order is checked against this specification sheet.
Material Basis
- Nickel-Copper Alloy
- UNS N04400
- Werkstoff Nr. 2.4360
- Solid-Solution Strengthened
Governing Standards
- ASTM F467
- ASME SF467
- Material Basis Of ASTM B164
- General Reference DIN 125/9021
Washer Size Range
- Metric M3 To M56
- Imperial 3/16″ To 2″
- Custom OD/ID On Request
- Thickness Per Drawing
Washer Types Supplied
- Flat, Spring & Lock
- Spherical & Conical
- Star, Split & Slot
- Square & Round
Delivery Condition
- Hot Rolled Or Cold Drawn
- Annealed Or Spring Temper
- Bright Or Pickled Finish
- Deburred, Cleaned Edges
Production Route
- Blanked From Strip Or Plate
- Punched And Formed
- Stress Relieved As Needed
- Machined To Final Size
Testing Offered
- PMI Spectro Analysis
- Hardness & Tensile Test
- NABL Approved Lab Reports
- Third Party Inspection
Matching Products
- Monel 400 Bolts & Nuts
- Monel 400 Studs
- Monel K500 Washers
- Monel 400 Fastener Range
Packing
- Boxes Of 50/100/200 Pieces
- Grade & Heat Number Tags
- VCI Wrap For Export
- Fumigated Wooden Crates
Types Of Monel 400 Washers We Supply
A trusted Monel 400 Washers Manufacturer in India stocks every common washer type.
Monel 400 Spring Washer
Coil Spring
Monel Alloy 400 Spherical Washer
Self-Align
ASTM F467 Monel 400 Flat Washer
Plain Flat
Monel 400 Conical Washer
Belleville
Alloy 400 Round Washer
Standard Round
Monel 400 Square Washer
4-Corner
400 Monel Star Washer
Tooth Lock
Monel 400 Lock Washer
Anti-Loosen
Need ASTM F467 400 Monel Machine Washer In A Hurry?Mail the size list, we quote inside 24 hours for bulk lots too.
Buy UNS N04400 Machine Washers Packed in Boxes of 50/100/200 for Desalination Plants
Size Range Of ASTM F467 400 Monel Machine Washer
Metric and imperial sizes cover small instrument washers to large flange washers.
Metric Size Range
M3 – M56
Bore matched to DIN 125/127 series
Imperial Size Range
3/16″ – 2″
Matched to UNC/UNF bolt sizes
Thickness
Per Drawing
Light, standard and heavy gauge offered
Bore Fit
Close / Standard
Held to buyer drawing or DIN reference
Monel 400 Washer vs Monel K500 Washer
Buyers often compare Monel 400 with Monel K500. This comes up on most enquiries.
Monel K500 Washer
- Age-hardened, higher strength grade
- Used where added tensile strength is needed
- Slight risk of stress-corrosion cracking
- Higher cost than Monel 400
Monel 400 Washer
- Solid-solution strengthened, no age hardening
- Outstanding hydrofluoric acid resistance
- Preferred for general marine and chemical duty
- Widely stocked, shorter lead time
Manufacturing Process Of Monel 400 Punched Washer
From Strip Or Plate To Certified Washer
How UNS N04400 stock becomes a finished, traceable washer at our works.
Strip / Plate Cutting
Monel 400 strip or plate cut to washer blank size
Punching & Piercing
Centre bore pierced to match the bolt size
Forming
Spring, conical or spherical profile pressed as needed
Heat Treatment
Annealed or stress relieved as per order specification
Inspection & Dispatch
Checked and shipped with an EN 10204 3.1 certificate
Chemical Composition Of Monel 400 Conical Washer
Composition is held against ASTM B164 heat analysis limits for UNS N04400.
NickelNi
63.00% min
CopperCu
28.00 – 34.00%
IronFe
2.50% max
ManganeseMn
2.00% max
SiliconSi
0.50% max
CarbonC
0.30% max
SulphurS
0.024% max
Mechanical Properties Of ASTM F467 Monel 400 Flat Washer
Typical Values, Annealed Rod & Bar Basis
Washer blanks are cut from Monel 400 strip, sheet or rod stock.
Tensile Strength
517 – 620 MPa
75 – 90 ksi, annealed condition
Yield Strength (0.2%)
172 – 345 MPa
25 – 50 ksi
Elongation
35% Min
In 2 in. [50 mm] gauge length
Hardness
60 – 80 HRB
Annealed rod and bar range
Physical Properties Of UNS N04400 Machine Washer
A Monel 400 Washers Supplier in India confirms physical values for drawings.
Density
8.80 g/cm³
0.318 lb/in³
Melting Range
1300 – 1350°C
2370 – 2460°F approx
Modulus Of Elasticity
179 GPa
At room temperature
Thermal Conductivity
21.8 W/m·K
At 20°C
Electrical Resistivity
51.1 µΩ·cm
At 20°C
Coeff. Thermal Expansion
13.9 µm/m·K
0 – 100°C
Specific Heat
452 J/kg·K
At 20°C
Max Service Temp
260°C
500°F, continuous non-oxidising service
Equivalent Grades Of WERKSTOFF NR. 2.4360 Washers
One Chemistry, Several Nameplates
Monel 400 Washers read the same nickel-copper chemistry across each standard.
ASTM / UNS
- ASTM F467 Material Basis
- ASTM B164 / B127
- UNS N04400
DIN / EN / Werkstoff
- Werkstoff Nr. 2.4360
- EN NiCu30Fe
- Same UNS N04400 Basis
BS / AFNOR / GOST
- BS NA13
- AFNOR NU-30M
- GOST МНЖМц 28-2.5-1.5
JIS
- JIS NW4400
- Matches UNS N04400
- Confirmed On Order
Nearby Nickel-Copper Grades
- Monel K500 (UNS N05500, Age-Hardened)
- Monel R-405 (UNS N04405, Free-Cutting)
Indian Market Note
- No Single-Number IS Equivalent
- Ordered Directly As UNS N04400
Hydrofluoric Acid & Seawater Chemical Compatibility
Monel 400 Washers hold up well against these commonly handled process media.
Generally Compatible
- Seawater and brine solutions
- Hydrofluoric acid, de-aerated grades
- Caustic soda and alkaline solutions
- Sulfuric acid under reducing conditions
Use With Caution
- Strong oxidising acids like nitric acid
- Wet chlorine or oxidising chloride gas
- Ammonia solutions under sustained stress
- Ferric and cupric chloride solutions
Surface Finish Options For Alloy 400 Round Washer
Finish is picked to suit the application, from mill state to polished.
Mill Finish
As-Rolled
Standard economy grade finish
Bright Annealed
Smooth, Bright
Reduced surface oxidation
Pickled & Passivated
Scale-Free
Clean surface for critical service
Polished
On Request
For visible or decorative applications
Application Industries Of Monel Alloy 400 Slot Washer
Non-magnetic, acid-resistant washers suit demanding service across a wide industrial spread.
Desalination Plants
Offshore & Marine Platforms
Hydrofluoric Acid Alkylation Units
Seawater Piping Systems
Oil & Gas Valves
Pulp & Paper Mills
Chemical Processing Plants
Instrumentation & Sensor Housings
Non-Magnetic Property For Desalination & Offshore Use
Buyers of instrumentation and sensor parts often ask about magnetic behaviour first.
Magnetic Permeability
Moderately Non-Magnetic
In the annealed condition
Curie Temperature
21 – 49°C
70 – 120°F approx
Typical Use
Sensor Housings
Compass and instrument mounting hardware
Production Note
Heat-Wise Variation
Some heats show slight magnetism
Need Monel 400 Washers For A Desalination Or Offshore Order?Send the RFQ, our Mumbai desk replies with a size-wise quote fast.
Packing Of 400 Monel Star Washer In Boxes Of 50/100/200
Each washer size is packed and labelled the same disciplined way, every time.
Individual Poly Bagging
Every washer bagged to prevent scratching in transit
Boxed In Lots Of 50/100/200
Standard counts held per size for desalination orders
Grade & Heat Tagging
Every box tagged with grade and heat number
Export Crating
Wooden crates used for sea freight shipments
Monel 400 Washers Price In India
Driven Pricing, Not A Flat Rate Card
Nickel prices move week to week, so our Monel 400 pricing tracks the LME.
Send a size-wise quantity list for per-piece pricing. Get it inside 24 hours. HSN and GST are already worked out.
Stock, MOQ & Dispatch Timeline
From Enquiry To Gate Pass
The real clock on a Monel 400 Washers order, not a marketing promise.
Day 0 – Enquiry
Mail size, type and quantity to our Mumbai desk
Day 1 – Driven Quote
Per-piece rate against the day’s nickel reference, GST included
Day 2 – Inspection
Chemistry, dimensions and PMI cleared, TPI called if needed
Day 3 – Dispatch
Stock sizes leave with LR copy and full document set
Stock Range
M3 – M36
Common metric sizes held in Mumbai
Minimum Order
10 Kg
Per size, trial lots considered
Large Size Lead Time
10 – 15 Days
Above M36, indented against order
Export Transit
Nhava Sheva
Air or sea, FOB CFR CIF DDP quoted
Documentation Of Monel 400 Square Washer
Every order ships with paperwork that matches the physical washer, size for size.
Mill Test Certificate
Chemical and mechanical results per EN 10204 3.1
Standard
Third Party Inspection Report
SGS, BV, TUV or Lloyd’s, arranged on request
On Request
NABL Approved Lab Report
Chemical and mechanical testing from an accredited lab
On Request
Certificate Of Origin
Chamber-attested, needed for most export shipments
Export
Packing List & Invoice
Heat-number traceable listing for every carton or box
Standard
Testing & Inspection Of ASTM F467 400 Monel Machine Washer
A serious Monel 400 Washers Supplier in India tests every batch before dispatch.
Chemical / PMI Analysis
Spectro reading against UNS N04400 composition limits
Hardness Test
Rockwell B readings recorded lot wise on samples
Tensile & Yield Test
Tensile, yield and elongation tested per ASTM B164
Dimensional Inspection
Outer diameter, bore and thickness checked against drawing
Visual & Surface Check
Every piece checked for burrs, scale and finish defects
Magnetic Permeability Check
Confirms non-magnetic behaviour for sensitive equipment orders
Monel 400 Washers Frequently Asked Questions
What is the UNS number for Monel 400 Washers?
UNS N04400, also shown as Werkstoff Nr. 2.4360.
Is ASTM F467 the correct standard for Monel washers?
It sets nonferrous nut chemistry, applied to washers as material basis.
Are Monel 400 Conical Washer magnetic?
No, the alloy stays non-magnetic across normal service temperatures.
What is the difference between Monel 400 and Monel K500 washers?
K500 is age-hardened for higher strength; 400 is not.
What is the HSN code for Monel 400 Spring Washer?
HSN 7508, taxed at 18% GST in India.
Here is a List of Countries Where We Have Regular Deliveries.
| Regions | Country |
|---|---|
| South Carolina | USA |
| North America | USA, Canada, Mexico |
| South America | Brazil, Argentina, Colombia |
| North Africa | Egypt, Morocco, Algeria |
| West Africa | Nigeria, Ghana, Senegal |
| East Africa | Kenya, Ethiopia, Tanzania |
| Middle East | Saudi Arabia, Iran, Iraq |
| South Asia | India, Pakistan, Bangladesh |
| East Asia | China, Japan, South Korea |
| Melanesia | Fiji, Papua New Guinea |
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