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Hastelloy C22 Washers Suppliers & Exporters
If your chemical reactors, flue gas scrubbers, or pharmaceutical synthesis loops demand severe resistance to mixed oxidizing and reducing acids, you've reached the right source. As a leading Hastelloy C22 Washers Supplier and Hastelloy C22 Washers Exporter, Aurum Overseas manufactures precision Plain, Spring, Lock, Square, and Conical fasteners to ASME B18.21.1, DIN 125, and ISO 7089 standards.
Our UNS N06022 Washers feature a nickel-chromium-molybdenum-tungsten alloy matrix engineered for superior resistance to pitting, crevice corrosion, and stress corrosion cracking. Supplied with full EN 10204 3.1 MTR certifications, our Hastelloy C22 Washers are fully stocked for fast dispatch.
We export these washers to key global markets across North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Netherlands, Norway), the Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Oman), and Asia-Pacific (Singapore, Malaysia, Australia).
Technical Specifications
| Parameter | Technical Specification / Standard Range |
|---|---|
| Material Grade | Hastelloy C22 (Ni-Cr-Mo-W Alloy) |
| Forging Designation | ASTM B574 / UNS N06022 |
| UNS Designation | UNS N06022 |
| Manufacturing Standards | ASTM B575, ASME SB575, ASTM B574, ASME SB574 |
| Dimensional Specifications | ASME B18.21.1, DIN 125 A/B, DIN 127, DIN 9021, ISO 7089, ISO 7090 |
| Washer Types | Plain Washers, Spring Washers, Lock Washers, Square Washers, Conical Washers |
| Size Capability | Imperial: #4 to 4" NB | Metric: M3 to M100 |
| Thickness Range | 0.5 mm to 12 mm |
| Heat Treatment Condition | Solution Annealed (1121°C) + Rapid Air/Water Quenched |
| Hardness Limit | 100 HRB max / 240 HB max |
Technical Properties & Chemical Composition
Equivalent Grades of Hastelloy C22 Washers
| STANDARD | WERKSTOFF NR. | UNS | TRADEMARK |
|---|---|---|---|
| Hastelloy C22 | 2.4602 | N06022 | Alloy C22 |
Chemical Composition of Hastelloy C22 Washers
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | Balance (~56%) |
| Chromium (Cr) | 20.0 – 22.5 |
| Molybdenum (Mo) | 12.5 – 14.5 |
| Iron (Fe) | 2.0 – 6.0 |
| Tungsten (W) | 2.5 – 3.5 |
| Cobalt (Co) | 2.50 max |
| Manganese (Mn) | 0.50 max |
| Carbon (C) | 0.015 max |
Mechanical & Physical Properties of Hastelloy C22 Washers
| Property | Metric Value | Imperial Value |
|---|---|---|
| Ultimate Tensile Strength | 690 MPa min | 100 ksi min |
| Yield Strength (0.2% Proof Stress) | 310 MPa min | 45 ksi min |
| Elongation (%) | 45% min | 45% min |
| Hardness (Rockwell B) | 100 HRB max | 100 HRB max |
| Density | 8.69 g/cm³ | 0.314 lb/in³ |
| Melting Point | 1399°C | 2550°F |
Types of Hastelloy C22 Washers
Aurum Overseas supplies a comprehensive range of Hastelloy C22 washer configurations manufactured according to standard DIN, ASME, and ISO dimensional tolerances for multiple engineering assemblies.
Hastelloy C22 Plain Washers
Hastelloy C22 Spring Washers
Hastelloy C22 Lock Washers
Hastelloy C22 Square Washers
Hastelloy C22 Conical Washers
Key Technical Advantages
Multi-Acid Protection
High chromium, molybdenum, and tungsten content safeguards your equipment against both oxidizing and reducing chemicals, eliminating frequent fastener replacements.
Pitting & Crevice Defense
Delivers exceptional localized corrosion resistance in hot chloride and acid wash loops, preventing unexpected joint leaks and system downtime.
High-Temperature Stability
Maintains structural integrity and joint seal tightness under extreme process temperatures and severe thermal cycling.
Long-Term Cost Savings
Extended service life in harsh chemical environments significantly reduces maintenance costs, joint failures, and total cost of ownership.
Key Applications of Hastelloy C22 Washers
| Industry Sector | Application | Operating Environment |
|---|---|---|
| Chemical Processing | Acetic acid reactors, chlorination systems, and pickling tanks | Hot, contaminated mineral acids and mixed organic solvents |
| Pharmaceutical Manufacturing | Multi-purpose reaction vessels and clean-in-place (CIP) piping | High-purity process lines exposed to aggressive acid cleaning agents |
| Pollution Control | Flue gas desulfurization (FGD) scrubbers and duct re-heaters | Condensing acid gas streams mixed with high chloride content |
| Nuclear Fuel Reprocessing | Dissolver tanks and radioactive waste vitrification equipment | Concentrated nitric and hydrofluoric acid streams |
| Waste Water Treatment | Hazardous waste incinerator scrubbers and industrial effluent lines | Extreme pH variations and strong oxidizers |
Quality Testing & Inspection
- Positive Material Identification (PMI): Spectrometric verification confirms precise chemical composition including Ni, Cr, Mo, W, and Fe fractions.
- Intergranular Corrosion Testing: Standardized ASTM testing verifies immunity to intergranular attack across heat-affected regions.
- Mechanical & Hardness Verification: Tensile and hardness testing guarantees compliance with 100 HRB maximum limits.
- Dimensional Conformance: Precision optical comparator inspections confirm exact tolerances against DIN, ISO, and ASME standards.
Global Export Markets
Aurum Overseas supplies fully certified Hastelloy C22 Washers to industrial projects across:
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Norway
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Singapore
Malaysia
Australia
Frequently Asked Questions
Hastelloy C22 contains higher chromium content than C276, providing superior resistance to strongly oxidizing environments such as nitric acid and wet chlorine.
Yes. The combined presence of molybdenum and tungsten provides strong performance in reducing environments like hydrochloric and sulfuric acids.
Hastelloy C22 fasteners maintain mechanical stability and corrosion resistance in continuous service environments up to 677°C (1250°F).
Yes. Their high purity and resistance to pitting prevent product contamination in aggressive synthesis and cleaning processes.
All shipments include EN 10204 3.1 Mill Test Reports verifying chemical analysis, tensile properties, hardness values, and PMI verification.
Contact Aurum Overseas
Aurum Overseas provides rapid delivery of certified Hastelloy C22 Washers for high-specification global infrastructure.
Contact our sales engineering team for technical assistance, material certifications, and rapid pricing.