Why Chemical Buyers Choose Ganpat Industrial For Hastelloy Washers?
15–17% Molybdenum Heats
UNS N10276 chemistry that resists wet chlorine, hypochlorite & hot acids where 316 grade fails
Plain, Taper & Cup In One PO
Full Hastelloy® washer range machined against a single drawing set
NACE & PED Ready
ISO 9001 • PED • Petrofac Approved – MR0175/ISO 15156 heats on request
PMI On Every Heat
Alloy verification before the washer leaves the shop floor – no substitution risk
Custom Sizes To M100
Beyond-catalogue washers machined to your drawing, no minimum-order drama
Hastelloy Washers Highlights
- 1Type: Plain, Taper, Flat, Cup, Spring, Split Lock, Square, Sealing, Fender, Toothed Star
- 2Size Range: M2 to M36 Catalogue • Up to M100 On Drawing
- 3Common Grades: UNS N10276 (C-276) • UNS N06022 (C-22) • Werkstoff 2.4819
- 4Standards: ASTM B574, ASME/ANSI B18.21.1, DIN 125A, DIN 127B
- 5Thread Series: Coarse & Fine (ISO Metric)
- 6Finish: Bright Annealed, Pickled, Mechanically Polished, Passivated
Or call our Mumbai office: +91 22 6743 7134 • Fast dispatch on ready stock sizes
Ganpat Industrial manufactures Hastelloy Washers for demanding industrial applications worldwide. These washers offer excellent corrosion resistance in harsh chemical environments. We machine Hastelloy Flat Washer with strict quality control. Every washer is tested and supplied with complete material traceability. Products are supplied to chemical, pharma, and offshore industries. We serves customers across India, UAE, and Middle Eastern markets.
Mumbai · Hastelloy Washers Manufacturer In India
Engineered for Durability, Built for Performance.
Ganpat Industrial machines Hastelloy® Alloy Flat Washer for demanding chemical, pharma, flue-gas and sour-service applications across India, UAE and Middle East.
- ✓PMI Testing Available
- ✓Custom Sizes Available
- ✓EN 10204 3.1 MTC
- ✓Global Export Support
Precision ASTM B574 Hastelloy Plain Washer Manufacturer in India As Per ASME/ANSI B18.21.1 & DIN 125A/127B Standards
Hastelloy Washers Specification
Get Hastelloy Washers Supplier In India offering reliable specification on every enquiry.
Hastelloy Plain Washer Material
- UNS N10276 (C-276)
- UNS N06022 (C-22)
- Werkstoff 2.4819
- ASTM B574 Rod/Bar Stock
Hastelloy Taper Washer Size Range
- ID: M2 – M36 Catalogue
- OD: 5 – 66 mm Catalogue
- Thickness: 0.3 – 5 mm
- Custom To M100 On Drawing
Hastelloy Flat Washer Testing
- PMI Testing (XRF)
- Intergranular Test ASTM G28
- Dimensional Check
- Third-Party Inspection
M6 Hastelloy® Alloy Washers Finish
- Bright Annealed & Pickled
- Mechanically Polished
- Passivated / Descaled
- Mill (As-Forged) Finish
Hastelloy Spring Washer Documentation
- Mill Test Certificate 3.1/3.2
- NABL Lab Report
- Packing List
- Certificate Of Origin
Hastelloy Cup Washer Origin
- Indian Origin
- US Origin (Haynes Licensed Mills)
- European Origin
- Heat-Number Traceable
Buy Hastelloy® Alloy Flat Washer in M2 to M100 Size With Coarse/Fine Thread For Chemical Applications
Size Chart of ASTM B574 Hastelloy Plain Washer
Check Hastelloy Washers Manufacturer In India offering custom sizes at competitive rates.
| Nominal Size | Inner Dia. d1 | Outer Dia. d2 | Thickness s |
|---|---|---|---|
| M2 | 2.2 | 5 | 0.3 |
| M2.5 | 2.7 | 6 | 0.5 |
| M3 | 3.2 | 7 | 0.5 |
| M4 | 4.3 | 9 | 0.8 |
| M5 | 5.3 | 10 | 1.0 |
| M6 | 6.4 | 12 | 1.6 |
| M8 | 8.4 | 16 | 1.6 |
| M10 | 10.5 | 20 | 2.0 |
| M12 | 13.0 | 24 | 2.5 |
| M14 | 15.0 | 28 | 2.5 |
| M16 | 17.0 | 30 | 3.0 |
| M18 | 19.0 | 34 | 3.0 |
| M20 | 21.0 | 37 | 3.0 |
Thread Types For Hastelloy Flat Washer
Metric Threads
M3 to M56 for ISO metric fasteners
UNC Threads
Unified coarse thread applications
UNF Threads
Unified fine thread applications
BSW Threads
British Standard Whitworth applications
BSF Threads
British Standard Fine thread applications
BSP Threads
British Standard Pipe applications
Hastelloy Taper Washer Production Process
Heat & MTC Verification
Incoming UNS N10276 stock checked against Mill Test Certificate 3.1
Blanking & Facing
Rod/plate stock cut and faced into rough washer discs
Precision Boring
ID bored to tolerance on CNC tooling built for low-carbon Ni-alloys
Deburring & Edge Finish
Edges rounded for smooth bolt seating, no work-hardened burrs left
Descaling & Passivation
Cleaned per ASTM A380 practice to restore the passive chromium film
Inspection & Packing
PMI & dimensional check, then export-ready packing
Monthly Delivery of Hastelloy Washers To Below Countries
| Export to | Continent | Port | Shipping Time |
|---|---|---|---|
 Malaysia |
Asia | Port of Singapore | 15-50 Days |
 Brazil |
South America | Port of Itaqui | 25-39 Days |
 Singapore |
Asia | Port Klang | 7-14 Days |
Surface Finish of M6 Hastelloy® Alloy Washers
Cold Rolled / Mill Finish
Pickled & Descaled
Polished Finish
Electropolished
Cleaned & Passivated
Shot Blasted
Surface Ground
Heat-Number Marking
Need Hastelloy Cup Washer Or A Custom Size On Drawing?Share size & quantity – get factory price with MTC 3.1 in 24 hours.
Different Types of Hastelloy Washers
ASTM B574 Hastelloy Plain Washer
DIN 125A
Hastelloy Taper Washer
DIN 6917
Hastelloy Cup Washer
Custom Drawing
Hastelloy® Alloy Flat Washer
ISO 7089
Hastelloy Spring Washer
DIN 127B
Hastelloy Split Lock Washer
DIN 127A
Hastelloy Square Washer
DIN 436
Hastelloy Star Washer
DIN 6797
Hastelloy Cup Washer Advantages
Resists Pitting & Crevice Corrosion
Stable In Oxidizing & Reducing Media
Resists Stress-Corrosion Cracking
Low Carbon – No Mandatory PWHT
Handles Wet Chlorine & Hypochlorite
Good Weldability, As-Welded Service
Fewer Turnarounds, Longer Joint Life
Wide Chemical Compatibility Range
Chemical Composition of Hastelloy® Alloy Flat Washer
MolybdenumMo
15.00–17.00%
ChromiumCr
14.50–16.50%
IronFe
4.00–7.00%
TungstenW
3.00–4.50%
CobaltCo
≤ 2.50%
CarbonC
≤ 0.01%
NickelNi
Balance
Hastelloy Spring Washer Mechanical Properties
Tensile Strength
690 MPa Min
ASTM B574 UNS N10276
Yield Strength
283 MPa Min
0.2% Proof Stress
Hardness
≤ 210 HB
≤ 100 HRB Max
Elongation
40% Min
Solution Annealed
Material Equivalent of Hastelloy Alloy Washers
American Standard
- UNS N10276
- ASTM B574 / ASME SB-574
- ASME/ANSI B18.21.1
European Standard
- Werkstoff 2.4819
- EN Designation NiMo16Cr15W
- DIN 125A / DIN 127B
Japanese Standard
- JIS NW0276
- JIS B 1256 (Washer Dimension)
- Hastelloy® C-276 Trade Name
Hastelloy Washers vs Stainless Steel Washers Comparison
Hastelloy Washers
- Excellent corrosion resistance
- Strong against pitting and crevice corrosion
- Performs well at high temperatures
- Ideal for aggressive chemicals
Stainless Steel Washers
- Good general corrosion resistance
- Strong and durable material
- Suitable for moderate temperatures
- More affordable and widely available
Comparing Hastelloy Washers against Stainless Steel Washers For A Sour-Service Joint?Send your BOQ – our team maps the right grade and quotes it same week.
Export Packaging of Hastelloy Star Washer
Anti-Tarnish Poly Bags
Individually bagged for trial and sample orders
Wooden Crate / Pallet Box
For bulk and container-load shipments
VCI Moisture Barrier Wrap
Guards against surface staining on long sea transit
Heat-Number Tagged Labelling
Every carton marked and cross-referenced to the MTC
Hastelloy Flat Washer Weight Chart
| Size | Weight (g) |
|---|---|
| M2 | 0.04 |
| M2.5 | 0.10 |
| M3 | 0.14 |
| M4 | 0.35 |
| M5 | 0.50 |
| M6 | 1.15 |
| M8 | 2.07 |
| M10 | 4.05 |
| M12 | 7.11 |
| M14 | 9.76 |
| M16 | 12.80 |
| M18 | 16.65 |
| M20 | 19.44 |
HSN Code of Hastelloy Split Lock Washer
HSN Code
7508.90.90
Other Articles Of Nickel & Nickel Alloy
GST Rate
18%
Applicable On Domestic Sale
Basic Customs Duty
Indicative
Verify current tariff slab on import
Export Benefit
RoDTEP Eligible
Duty drawback available on export orders
Testing Methods For M6 Hastelloy® Alloy Washers
PMI Testing (XRF)
Positive Material Identification on every heat before dispatch
Intergranular Corrosion
ASTM G28 check on welded / heat-affected lots
Hardness Test
Rockwell / Brinell check against ASTM B574 limits
Tensile & Yield Test
Mechanical properties verified per lot on a sample piece
Dye Penetrant / Visual
Surface defect screening before packing
Dimensional Check
OD, ID, thickness & flatness verified per lot
Buying In Bulk For A Chemical Or Offshore Project?Send your BOQ – factory price, MTC 3.1, dispatch same week.
Applications of Hastelloy Spring Washer
Find Hastelloy Washers Supplier In India offering diverse applications.
Chemical & Petrochemical Reactors
Flue Gas Desulphurisation Systems
Sour Gas & Offshore Wellheads
Heat Exchangers & Evaporators
Pulp & Paper Processing
Pharma & Biotech Skids
Waste Treatment Plants
Pump & Valve Assembly, Severe Duty
Hastelloy Alloy Washers Delivered Weekly To The Following Countries
| Export to | Continent | Port | Shipping Time |
|---|---|---|---|
 Germany |
Europe | Port of Hamburg | 12 Days |
 USA |
North America | Port of Los Angeles | 33-47 Days |
 UAE |
Asia | Jebel Ali Port | 20-25 Days |
Frequently Asked Questions
What is the ASTM B574 Hastelloy Plain Washer price based on?
Size, thickness, finish, quantity and material grade.
What M6 Hastelloy® Alloy Washers size range do you stock?
M2 to M36 standard sizes, with custom sizes available.
Can Hastelloy Washers handle wet chlorine service?
Yes, They offer excellent wet chlorine resistance.
Do Hastelloy Cup Washer need post-weld heat treatment?
No, low-carbon Hastelloy grades generally require no PWHT.
Our Diverse Client Base in the Following Nations
| Houston | Dubai | Morocco | Kenya | Gabon | Tunisia |
|---|---|---|---|---|---|
| Mozambique | USA | Abu Dhabi | South Africa | Nigeria | Oman |
| Al-khobar | UAE | Saudi Arabia | Riyadh | Dammam | Al Jubail |
| Zambia | Ghana | Angola | Ethiopia | Egypt | Tanzania |
| California | Algeria | New South Wales | Indiana | Texas | Carolina |
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