Table of Contents
- Hastelloy C22 Overview
- Technical Specifications
- Chemical Composition & Mechanical Properties
- Types of UNS N06022 Hex Bars
- Key Advantages of Hastelloy C22 Hex Bars
- Key Applications of Hastelloy C22 Hex Bars
- Quality Assurance & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Hastelloy C22 Overview
Formulated with a high 22% chromium and 13% molybdenum matrix, Hastelloy C22 Hex Bars deliver exceptional resistance to aggressive oxidizing media and hot acid process streams. Aurum Overseas is a leading Hastelloy C22 Hex Bars Supplier, offering solution-annealed nickel alloy hexagon stock for high-purity chemical processing equipment and pharmaceutical reactors.
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As an established Hastelloy C22 Hex Bars Exporter and certified UNS N06022 Hex Bars Supplier, we stock precision cold-drawn Hastelloy C22 Bright Hex Bars for CNC-machined valve seats alongside heavy Hastelloy C22 Forged Hex Bars for high-load pressure vessel fittings. Every heat undergoes solution annealing at 1121 °C followed by rapid water quenching to prevent intermetallic phase precipitation.
We export certified UNS N06022 Hex Bars in full compliance with ASTM B574 and ASME SB574 standards directly to agrochemical plants, flue gas scrubbing units, and waste treatment facilities across the USA, UK, Germany, UAE, Saudi Arabia, and global markets.
Technical Specifications
| Technical Parameter | Specification Standard |
|---|---|
| Material Specifications | ASTM B574, ASME SB574, EN 10088-3, DIN 17752 |
| UNS Designation | UNS N06022 |
| Across-Flats (AF) Size Range | 6.0 mm to 100.0 mm (1/4" to 4" Hexagon) |
| Length Options | 1,000 mm to 6,000 mm, Precision Sawing Cut-to-Length |
| Surface Finishes | Cold Drawn, Centerless Ground, Bright Annealed, Hot Forged, Rough Machined |
| Heat Treatment Condition | Solution Annealed (1121 °C / 2050 °F, Rapid Water Quenched) |
| Dimensional Tolerances | ASTM B574 / ISO 286-2 (h9, h10, h11 hex profile tolerances) |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Standard / Grade | Werkstoff Nr. | UNS Designation | EN Symbol | Common Name |
|---|---|---|---|---|
| Hastelloy C22 | 2.4602 | N06022 | NiCr21Mo14W | Alloy C22 |
Chemical Composition (%)
| Element | Specification Range (UNS N06022) |
|---|---|
| Carbon (C) | 0.015 max |
| Manganese (Mn) | 0.50 max |
| Silicon (Si) | 0.08 max |
| Phosphorus (P) | 0.020 max |
| Sulfur (S) | 0.020 max |
| Chromium (Cr) | 20.0 – 22.5 |
| Molybdenum (Mo) | 12.5 – 14.5 |
| Tungsten (W) | 2.5 – 3.5 |
| Cobalt (Co) | 2.5 max |
| Iron (Fe) | 2.0 – 6.0 |
| Nickel (Ni) | Balance (56.0 min) |
Mechanical & Physical Properties
| Property Parameter | Value (Metric / Imperial) |
|---|---|
| Density | 8.69 g/cm³ (0.314 lb/in³) |
| Melting Point | 1357 – 1399 °C (2475 – 2550 °F) |
| Tensile Strength (Min) | 690 MPa (100,000 Psi) |
| Yield Strength (0.2% Offset, Min) | 310 MPa (45,000 Psi) |
| Elongation (Min) | 45 % |
| Hardness (Max) | 217 HBW / 93 HRB |
Types of UNS N06022 Hex Bars
Aurum Overseas supplies Hastelloy C22 (UNS N06022) hex bars in precision bright and heavy forged conditions for critical chemical processing applications.
Hastelloy C22 Bright Hex Bars
Hastelloy C22 Forged Hex Bars
Key Advantages of Hastelloy C22 Hex Bars
Superior Oxidizing Media Resistance
High chromium content provides outstanding resistance to oxidizing acids, wet chlorine, and mixed acid environments.
Excellent Reducing Acid Performance
Balanced molybdenum and tungsten content delivers reliable protection against hydrochloric and sulfuric acid process streams.
Low Carbon Content
Ultra-low carbon (0.015% max) minimizes carbide precipitation during welding and thermal cycling, preserving corrosion resistance.
High Fabricability
Excellent ductility and workability support cold forming, machining, and welding of complex high-purity chemical components.
Key Applications of Hastelloy C22 Hex Bars
| Industry | Applications | Operational Benefit |
|---|---|---|
| Chemical Processing | Reactor agitator shafts, acid mixer components, valve stems | Outstanding resistance to mixed oxidizing and reducing acid streams. |
| Pharmaceutical | High-purity reactor fittings, CIP system components | Ultra-low carbon chemistry supports cleanability and product purity. |
| Flue Gas Desulfurization | Scrubber damper shafts, absorber tower fasteners | Resists hot acidic condensates and chloride-rich process environments. |
| Waste Treatment | Incineration system components, chemical feed fittings | Reliable performance in aggressive mixed chemical waste streams. |
Quality Assurance & Inspection
As a certified Hastelloy C22 Hex Bars Exporter and UNS N06022 Hex Bars Exporter, Aurum Overseas subjects every heat to rigorous quality verification:
- Spectro Chemical PMI: 100% XRF testing to verify exact alloying content, including Cr, Mo, W, and ultra-low C limits.
- Grain Size & Intergranular Corrosion Testing: Microstructural evaluation per ASTM G28 to ensure zero grain-boundary carbide precipitation.
- Mechanical Testing: Tensile, yield, elongation, and hardness testing per ASTM B574 to guarantee pressure-boundary compliance.
- Ultrasonic Inspection (NDT): Volumetric testing per ASTM B574 / ASTM E213 to ensure internal soundness of forged hexagon bars.
Global Export Markets
As an established Hastelloy C22 Hex Bars Exporter, Aurum Overseas supplies fully certified UNS N06022 Hex Bars to global chemical processing, pharmaceutical, and pollution control 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 (22% vs 15.5%) and balanced molybdenum, giving it significantly better resistance to oxidizing environments like nitric acid and wet chlorine, while maintaining excellent reducing acid performance.
UNS N06022 hex bars are produced in full accordance with ASTM B574 and ASME SB574 standards for nickel-alloy rod and bar stock.
Yes, Hastelloy C22 has high ductility and can be cold-worked, though it work-hardens rapidly and may require intermediate annealing for heavy deformation.
Yes, Alloy C22 is fully compliant with NACE MR0175/ISO 15156 for use in sour oilfield environments with high levels of H2S.
Contact Aurum Overseas
Partner with a trusted Hastelloy C22 Hex Bars Supplier and global UNS N06022 Hex Bars Exporter for certified alloy stock, custom cut-to-length sawing, and rapid international delivery.