Why Buyers Choose Us As Their Hastelloy C22 Washers Supplier In India?
NACE MR0175 Ready Chemistry
Every heat matches Ni-Cr-Mo-W limits before a single blank is pierced.
Solution-Annealed Every Batch
Heat treated per ASTM B574 to hold ductility and corrosion resistance.
Flat, Spring & Wave Types
Six washer families rolled and pressed to match your bolting programme.
PMI-Verified On Every Heat
Positive Material Identification confirms Cr, Mo & W before dispatch.
Ready Stock, Fast Dispatch
Fast-moving sizes boxed and rolling within days of PO confirmation.
Hastelloy C22 Washers Snapshot
- 1Product Family: Flat, Spring, Square Spring, Split Spring & Wave Washers
- 2Size Coverage: M2 to M64 | 3 mm to 200 mm
- 3Governing Standard: ASTM B574, ASME SB574, DIN 2.4602, UNS N06022
- 4Surface Options: Bright Annealed, Pickled & Passivated, Electropolished
- 5Common Marking: C22, N06022, 2.4602, Hastelloy® C-22®
- 6Service Use: Chlorination, Flue Gas, Pharma, Sour Gas & Sea Water Lines
Or call our Mumbai office: +91 22 6743 7134 • Hastelloy C22 washers dispatched with heat-wise MTC
Every washer leaving our shop is blanked from certified ASTM B574 Alloy C22 Washers with complete heat traceability. Buyers searching for a dependable Hastelloy C22 Washers Supplier in India. so, choose us because every disc is solution annealed, PMI-checked, and matched with identical heat data. UNS N06022 Flat Washer, spring, square spring, split spring, and wave patterns cover sealing and locking duties. Each WNR 2.4602 washer resists pitting, crevice attack, and stress-corrosion cracking in chloride-rich and mixed-acid media. They suit chlor-alkali, flue-gas desulfurization, pharmaceutical, and offshore piping assemblies. Where carbon steel or stainless washers fail prematurely.
Mumbai · Nickel Alloy Fastener Accessory Exporter
Hastelloy C22 Washers
Ganpat Industrial forges and presses Hastelloy C22 Flat Washers / Hastelloy C22 Spring Washers / Nickel Alloy C22 Plate Washer ranges for fabricators who cannot afford a chloride-cracked or pitted joint in chlor-alkali, flue-gas, pharma and offshore piping across India, the GCC and Southeast Asia.
- ✓ISO 9001:2015
- ✓NACE MR0175 / ISO 15156
- ✓PED 2014/68/EU
- ✓Mill Test Certificate 3.1
- ✓Third-Party Inspection Approved
ASME SB574 Hastelloy Alloy C22 Flat Washers Manufacturer & Stockist in India
Hastelloy C22 Washers Specification
Hastelloy C22 SAE Flat Washer Size Range
- Bore: M6 – M64 / 1/4″ – 2.1/2″
- UNS N06022 Flat Washer OD: 13mm – 115mm
- WNR 2.4602 Flat Washer Thickness: 1.5mm – 10mm
- Standard & drawing-based sizes
ASME SB574 Hastelloy Alloy C22 Flat Washers Standard
- ASTM B574 / ASME SB574
- ASTM B575 (Plate & Strip Basis)
- Din 2.4602 Spring Washers Form
- ASME B18.22.1 Plain Washers
Hastelloy C22 Machine Washers Route
- Solution Annealed Blanking
- Cold / Hot Forming
- Piercing & Facing
- Precision Grinding
Nickel Alloy UNS N06022 Spring Washer Finish
- Bright Annealed (Mill Finish)
- Pickled & Passivated
- Electropolished
- Mechanically Polished
Alloy C22 Square Spring Washer Grade Material
- Nickel Alloy C22 Plate Washer Stock
- UNS N06022 / WNr 2.4602
- Solution-Annealed Structure
- Ni-Cr-Mo-W Base Chemistry
ASTM B574 Hastelloy Alloy C22 Flat Washers Testing Coverage
- PMI Testing
- Corrosion Test (ASTM G28 / G48)
- Dimensional Check
- Third-Party Inspection
Thickness & Size Range Of Hastelloy C22 Washers
Contact Hastelloy C22 Washers Supplier in India for custom bore, OD or drawing-matched sizes.
Bore Diameter
M6 – M64
1/4″ to 2.1/2″ nominal fit
Outside Diameter
13mm – 115mm
Standard & wide-body options
Thickness Range
1.5mm – 10mm
Flat, spring & wave profiles
Tolerance Class
ISO 2768 – m
Medium tolerance, drawing on request
HSN Code & GST Rate For Alloy C22 Machined Washers
HSN Code – Nickel Alloy Washers
7508.90.90
Other articles of nickel & nickel alloy, not elsewhere specified
GST Slab
18%
Applicable on domestic supply within India
Export Incentive
RoDTEP Eligible
Duty remission on qualifying export shipments
Customs Basis
Chapter 75
Nickel & nickel alloy article classification
Need The Exact HSN Line For Your Invoice?Share your buyer country & quantity – we confirm the correct code within hours.
Is Hastelloy C22 Washers Magnetic? Quick Buyer Facts
Non-Magnetic Structure
Face-centred cubic austenitic lattice keeps the alloy non-magnetic
Stays Non-Magnetic After Welding
Low carbon & silicon content resist phase change near weld zones
Preferred For Instrumentation
Chosen where nearby sensors or MRI-adjacent equipment forbid magnetism
Get Ready Stock of Hastelloy C22 Machine Washers & UNS N06022 Flat Washer With Custom Sizes
Hastelloy C22 Washers Size Chart
| D (Bore) | d1 (Bore Dia.) | d2 (Outside Dia.) | h (Thickness) |
|---|---|---|---|
| M6 | 6.4000 | 12.0000 | 1.6000 |
| M8 | 8.4000 | 16.0000 | 1.6000 |
| M10 | 10.5000 | 20.0000 | 2.0000 |
| M12 | 13.0000 | 24.0000 | 2.5000 |
| M16 | 17.0000 | 30.0000 | 3.0000 |
| M20 | 21.0000 | 37.0000 | 3.0000 |
| M24 | 25.0000 | 44.0000 | 4.0000 |
| M30 | 31.0000 | 56.0000 | 4.0000 |
Need A Custom Hastelloy C22 Washer Drawing Matched?Share your OD, bore & thickness list – get a factory-price quote within 24 hours.
Testing Methods For Hastelloy C22 Spring Washers
Every genuine nickel-alloy washer supplier should show you these checks on paper before shipment.
PMI Testing
Positive Material Identification confirms Cr, Mo & W on every heat
Pitting Corrosion Test
ASTM G48 ferric chloride exposure verifies pitting resistance
Dimensional Inspection
Bore, OD & thickness checked against drawing every lot
Most Common Types Of Hastelloy C22 Washers
As an active Hastelloy C22 Washers manufacturer in India, we stock every washer style used across corrosive process lines.
Hastelloy® Alloy C22 Plain Washer
ASME B18.22.1
Alloy C22 Thick Flat Washer
ASTM F436M
Hastelloy Alloy C22 Spring Washers
DIN 127
Hastelloy C22 Square Spring Washer
DIN 440
Hastelloy Alloy C22 Split Spring Washer
DIN 128
C22 Hastelloy Flat Washer
DIN 137
Hastelloy Alloy C22 Lock Washer
DIN 6798
Alloy C22 Machined Washer
Custom Drawing
Hastelloy C22 Vs Hastelloy C276 Washers – Which To Choose?
Hastelloy C22 Washer
- Higher chromium for oxidizing acids
- Superior pitting & crevice resistance
- Better thermal stability, less sigma-phase risk
- Preferred for mixed oxidizing/reducing duty
Hastelloy C276 Washer
- Higher molybdenum for reducing acids
- Stronger in hot hydrochloric & sulfuric acid
- Longer field track record in oilfield duty
- Slightly lower chromium content
Weekly Delivery Of Hastelloy C22 Washers In Below Countries
| Export to | Continent | Shipping Time |
|---|---|---|
Mexico |
North America | 45 Days |
South Africa |
Africa | 25-30 Days |
Kenya |
Africa | 19 Days |
Oman |
Asia | 5 Days |
WNR 2.4602 Flat Washer NACE MR0175 / ISO 15156 Sour-Service Compliance
Refinery and gas-field buyers ask for this compliance sheet before any Hastelloy C22 washer order is confirmed.
Solution Annealed Condition
Heat treatment removes precipitates that trigger sulfide stress cracking
≤ 35 HRC Hardness
Every lot is hardness-checked so no washer crosses the sour-service limit
ISO 15156-3 Recognised
Chemistry & hardness combination accepted for global oilfield contracts
Hastelloy C22 Washers Installation & Torque Guideline
Match Washer Grade To Bolt Grade
Pair with C22 or compatible nickel-alloy studs to avoid galvanic mismatch
Step 1
Seat The Washer Flat Against The Flange
Keep contact faces clean of scale before assembly
Step 2
Apply A Cross-Bolt Tightening Pattern
Reduces uneven load and prevents washer distortion
Step 3
Use A Nickel-Safe Anti-Seize Compound
Avoid copper or graphite pastes that can trigger galvanic attack
Step 4
Re-Check After First Thermal Cycle
Retorque once the line has been through one heat-up and cool-down
Step 5
Not Sure Which Corrosive Media You Are Fighting?Send your process fluid & temperature – we confirm if C22 is the right pick.
Corrosion Resistance Of ASTM B574 Hastelloy C-22 Washers
Pitting Resistance
High Cr & Mo balance withstands chlorides, wet chlorine & nitric acid
Crevice Corrosion
Low carbon & silicon reduce attack under gaskets & flange faces
Stress-Corrosion Cracking
No cracking reported in boiling 45% MgCl2 per ASTM G36 testing
Documentation & Test Certificates Offered With DIN 2.4602 Spring Washers
Mill Test Certificate 3.1
Chemistry, hardness & tensile results traced to heat number
Every Order
PMI Test Report
Positive Material Identification confirming Cr, Mo & W content
On Request
Corrosion Test Report
ASTM G28 / G48 pitting & intergranular results on request
On Request
Certificate Of Origin
For customs clearance & import duty processing
Export Orders
Packing List & Invoice
PO-matched, HSN & GST breakup included
Every Order
Need A Custom Nickel Alloy C22 Plate Washer Drawing Matched?Share your OD, bore & thickness list – get a factory-price quote within 24 hours.
Application Of Hastelloy C22 Washers
Reach out to our export desk, already shipping into these process sectors every month.
Chlor-Alkali & Chlorination Plants
Flue Gas Desulfurization
Pharmaceutical Equipment
Pickling & Etching Systems
Sea Water & Desalination Equipment
Pulp & Paper Bleach Plants
Waste Incineration Scrubbers
Sour Gas & Refinery Piping
Monthly Delivery Of Hastelloy C22 Washers In Below Countries
| Export to | Continent | Shipping Time |
|---|---|---|
Indonesia |
Asia | 9 Days |
Philippines |
Asia | 14 Days |
Spain |
Europe | 30 Days |
Germany |
Europe | 20 Days |
Chemical Composition Of Hastelloy C22 Washers
NickelNi
Balance (~56%)
ChromiumCr
20.0-22.5%
MolybdenumMo
12.5-14.5%
IronFe
2.0-6.0%
TungstenW
2.5-3.5%
CobaltCo
≤ 2.50%
ManganeseMn
≤ 0.50%
CarbonC
≤ 0.015%
Mechanical Properties Of Hastelloy C22 SAE Flat Washer
Tensile Strength
≥ 690 MPa
100 ksi Min
Yield Strength (0.2%)
≥ 310 MPa
45 ksi Min
Elongation (2″)
≥ 45%
High Ductility
Hardness (Max)
≤ 100 HRB
Solution Annealed
Need A Certified Tensile & Hardness Report?Send size, quantity & standard for a free document review.
Equivalent Grades Of Hastelloy C22 Washers
ASTM / UNS
- ASTM B574 Hastelloy C-22 Washers
- ASTM B575 / B619 / B622 Reference
- UNS N06022
- AWS A5.14 ERNiCrMo-10
DIN / WNr
- WNr 2.4602
- NiCr21Mo14W Base Chemistry
- DIN 17752 / DIN 2.4602 Spring Washers
- EN 10269 Reference
ASME / Trade Name
- ASME SB574
- Hastelloy® C-22® (Registered Trade Name)
- Often searched as Alloy C22 / C22HS
Physical Properties Of Alloy C22 Flat Washers
Density
8.69 g/cm³
0.314 lb/in³
Melting Range
1357-1399°C
2475-2550°F
Modulus Of Elasticity
~206 GPa
~29.9 x 10&sup6; psi
Magnetic Behaviour
Non-Magnetic
Austenitic FCC structure
Need A Third-Party Witnessed Test Certificate?We coordinate SGS, Bureau Veritas or TUV inspection on request.
Surface Finish & Coating Options For Hastelloy C22 Washers
Bright Annealed
Bright mill finish straight after solution annealing cycle
Pickled & Passivated
Acid pickling removes heat scale and rebuilds the protective oxide film
Electropolished
Mirror-smooth surface for pharma & ultra-clean process lines
Mechanically Polished
Abrasive-belt finish for a uniform decorative surface
PVD Wear-Resistant Layer
Thin hard coating on request for high-friction assembly duty
Frequently Asked Questions
What is the price of Hastelloy C22 Washer per kilogram?
Price is driven by market rates, size, finish and order quantity – share your size list for a factory-direct kg rate.
What is the material equivalent of Alloy C22 Washers?
UNS N06022, WNr / DIN 2.4602 and ASTM B574 all reference the same Ni-Cr-Mo-W chemistry.
Can a ASTM B574 Hastelloy flat washer be welded into an assembly?
Yes, its low carbon and silicon content give excellent as-welded corrosion resistance without a post-weld anneal.
What is the difference between Hastelloy C22 and Hastelloy C276 washers?
C22 carries more chromium for oxidizing acids while C276 carries more molybdenum for reducing acids .
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|---|---|
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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