Table of Contents
- Hastelloy C22 Round Bars Overview
- Technical Specifications
- Mechanical Properties & Chemical Composition
- Types of Hastelloy C22 Round Bars
- Key Advantages of UNS N06022 Round Bars
- Key Applications of Hastelloy C22 Round Bars
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Hastelloy C22 Round Bars Supplier & Exporter
Aurum Overseas supplies high-performance Hastelloy C22 Round Bars engineered to eliminate pitting, crevice corrosion, and stress cracking in aggressive chemical environments. Alloyed with chromium, molybdenum, and tungsten, our C22 bar stock delivers superior strength and acid protection to maximize equipment service life.
-round-bar.webp "Hastelloy C22 Round Bars")
As a leading Hastelloy C22 Round Bars Supplier and Exporter, we stock certified ASTM A276 and A479 UNS N06022 Round Bars with EN 10204 3.1 MTCs. We offer centerless ground Hastelloy C22 Bright Bars, heavy Hastelloy C22 Forged Bars, and custom-cut lengths for immediate dispatch.
We export these specialized high-alloy nickel bars 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
| Technical Parameter | Hastelloy C22 (UNS N06022 / Alloy C22) |
|---|---|
| Material Designation | Hastelloy C22 / Alloy C22 / UNS N06022 |
| UNS Number | UNS N06022 |
| Manufacturing Standards | ASTM B574, ASTM A276, ASTM A479, ASME SB574, EN 10088-3 |
| Diameter Capability | 3 mm to 500 mm (1/8" to 20" NB) |
| Length Specifications | 3 Meters, 6 Meters, Cut-to-Length |
| Dimensional Tolerances | ISO h8, h9, h10, h11, DIN 1013 |
| Delivery Conditions | Solution Annealed & Water Quenched (1121°C / 2050°F) |
Mechanical Properties & Chemical Composition
Equivalent Grades of Hastelloy C22 Bars
| Standard | Werkstoff Nr. | UNS | JIS | EN |
|---|---|---|---|---|
| Hastelloy C22 | 2.4602 | N06022 | NW 6022 | NiCr21Mo14W |
Chemical Composition of Hastelloy C22 Round Bars
| Chemical Element | Composition Range (%) |
|---|---|
| Nickel (Ni) | Balance |
| Carbon (C) | 0.010 max |
| Chromium (Cr) | 20.00 – 22.50 |
| Cobalt (Co) | 2.50 max |
| Iron (Fe) | 2.00 – 6.00 |
| Manganese (Mn) | 0.50 max |
| Molybdenum (Mo) | 12.50 – 14.50 |
| Phosphorus (P) | 0.020 max |
| Silicon (Si) | 0.080 max |
| Sulfur (S) | 0.020 max |
| Tungsten (W) | 2.50 – 3.50 |
| Vanadium (V) | 0.35 max |
Mechanical Properties of UNS N06022 Round Bars
| Property | Value |
|---|---|
| Ultimate Tensile Strength | 690 MPa (100,000 psi) min |
| Yield Strength (0.2% Offset) | 310 MPa (45,000 psi) min |
| Elongation (%) | 45% min |
| Density | 8.69 g/cm³ |
| Melting Point | 1399°C (2550°F) |
Types of Hastelloy C22 Round Bars
Aurum Overseas supplies ASTM B574, ASTM A276 and ASTM A479 Hastelloy C22 Round Bars in precision bright and heavy forged conditions for aggressive chemical service.
Hastelloy C22 Bright Bars
Hastelloy C22 Forged Bars
Key Advantages of UNS N06022 Round Bars
Dual Acid Protection
High chromium, molybdenum, and tungsten content protects against both strong oxidizing and reducing media, preventing costly equipment failure.
Weld-Zone Reliability
Ultra-low carbon content prevents intergranular carbide precipitation during welding, maintaining full corrosion protection in heat-affected zones.
Superior Pitting Defense
Outperforms standard C-276 alloys in severe chloride environments, virtually eliminating localized pitting and crevice attack.
High Thermal Stability
Resists harmful intermetallic phase formation under heat, ensuring long-term mechanical strength and ductility in elevated-temperature systems.
Key Applications of Hastelloy C22 Round Bars
| Industry Sector | Typical Components | Operating Conditions |
|---|---|---|
| Chemical Processing | Reactor agitators, pump shafts, and mixing impellers | Exposure to hot wet chlorine, acetic anhydride, and mixed acid streams |
| Pharmaceutical Manufacturing | Reaction vessel shafting and sanitary fitting bars | Severe CIP/SIP sterilizing agents and high-purity chemical reactions |
| Flue Gas Desulfurization (FGD) | Scrubber damper shafts, ducting pins, and spray nozzles | High-chloride acidic slurries and hot SO2 gas condensate |
| Pulp & Paper Processing | Bleaching plant drive shafts and chlorine dioxide agitators | Severe wet chlorine gas, hypochlorite solutions, and ozone bleach systems |
| Nuclear Waste Remediation | Waste vitrification shafts and container tie rods | Highly radioactive acidic waste slurries and elevated thermal loads |
Quality Testing & Inspection
Every batch supplied by a trusted Hastelloy C22 Round Bars Exporter undergoes strict quality testing:
- Positive Material Identification (PMI): XRF spectroscopy confirms concentrations of nickel, chromium, molybdenum, and tungsten.
- Intergranular Corrosion Testing: ASTM G28 Method A testing verifies resistance to intergranular attack in aggressive acid media.
- Ultrasonic Inspection: NDT on forged bar stock per ASTM A388 verifies complete internal sound quality free of voids.
- Dimensional Inspection: Micrometer and optical profiling confirm precise tolerances (h8–h11) for seamless machining.
Global Export Markets
As an established Hastelloy C22 Round Bars Exporter, Aurum Overseas supplies fully certified UNS N06022 Round Bars to global energy and chemical engineering centers:
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
Hastelloy C22 contains higher chromium content (20–22.5% vs. 14.5–16.5% in C276), offering significantly better resistance to oxidizing environments, wet chlorine, and acid mixtures containing ferric or cupric ions.
ASTM A479 covers stainless and nickel alloy bars specifically intended for boilers and pressure vessels, ensuring compliance with strict mechanical and thermal stress design requirements.
Yes, due to its low carbon and silicon content, UNS N06022 resists grain boundary precipitation during welding, making it suitable for use in the as-welded condition for most chemical applications.
All shipments from Aurum Overseas include EN 10204 3.1 Mill Test Certificates detailing chemical analysis, mechanical test results, heat treatment history, and NDT test reports.
Contact Aurum Overseas
Aurum Overseas provides fully certified Hastelloy C22 Round Bars tailored to critical project specifications.
Contact our sales engineering team for stock availability, custom cut lengths, or immediate price quotes: