Table of Contents
- Hastelloy C22 Overview
- Technical Specifications
- Chemical Composition & Mechanical Properties
- Types of UNS N06022 Square Bars
- Hastelloy C22 vs. Hastelloy C276 vs. Hastelloy B2
- Key Advantages of Hastelloy C22 Square Bar
- Key Applications of Hastelloy C22 Square Bar
- Quality Assurance & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Hastelloy C22 Overview
Aurum Overseas is a trusted Hastelloy C22 Square Bars Supplier providing high-quality nickel-alloy bars built to handle aggressive industrial chemicals. Designed to resist harsh corrosion, pitting, and cracking, our stock of UNS N06022 Square Bars delivers long-lasting performance where standard stainless steels fail.
As an experienced Hastelloy C22 Square Bars Exporter, we supply precision UNS N06022 Bright Square Bars for smooth CNC machining and heavy UNS N06022 Forged Square Bars for load-bearing frames. Every shipment includes heat traceability, EN 10204 3.1 mill certification, and custom cut-to-length sizing to cut scrap costs.
We supply certified UNS N06022 Square Bars to chemical processing, pharmaceutical, and pollution control sectors across the USA, Canada, Germany, UK, UAE, Saudi Arabia, and global markets.
Technical Specifications
| Technical Parameter | Specification Standard |
|---|---|
| Material Specifications | ASTM B574, ASME SB574, DIN 17752, ISO 9723, ISO 9724 |
| UNS Designation | UNS N06022 |
| EN Designation | NiCr21Mo14W |
| JIS Standard | NW 6022 |
| Size Range (Square) | 6.0 mm x 6.0 mm to 200 mm x 200 mm (1/4" to 8" square) |
| Length Options | 1,000 mm to 6,000 mm, Custom Precision Cut-to-Length |
| Surface Finishes | Cold Drawn, Centerless Ground, Bright Annealed, Hot Forged, Rough Turned |
| Condition | Solution Annealed (1121 °C / 2050 °F followed by rapid water quench) |
| Dimensional Tolerances | ASTM B574 h9, h10, h11 square profile tolerances |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Standard Grade | UNS | Werkstoff Nr. | JIS | EN Standard |
|---|---|---|---|---|
| Hastelloy C22 | N06022 | 2.4602 | NW 6022 | NiCr21Mo14W |
Chemical Composition (%)
| Element | Composition Range (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 20.0 – 22.5 |
| Molybdenum (Mo) | 12.5 – 14.5 |
| Tungsten (W) | 2.5 – 3.5 |
| Iron (Fe) | 2.0 – 6.0 |
| Cobalt (Co) | 2.5 max |
| Vanadium (V) | 0.35 max |
| Manganese (Mn) | 0.50 max |
| Silicon (Si) | 0.08 max |
| Carbon (C) | 0.01 max |
| Phosphorus (P) | 0.02 max |
| Sulfur (S) | 0.02 max |
Mechanical & Physical Properties
| Property Parameter | Metric Units | Imperial Units |
|---|---|---|
| Density | 8.69 g/cm³ | 0.314 lb/in³ |
| Melting Point | 1399 °C | 2550 °F |
| Tensile Strength (Min) | 690 MPa | 100,000 Psi |
| Yield Strength (0.2% Offset, Min) | 310 MPa | 45,000 Psi |
| Elongation (Min) | 45 % | 45 % |
| Hardness (Max) | 220 HBW / 93 HRB | 93 HRB |
Types of UNS N06022 Square Bars
Aurum Overseas supplies Hastelloy C22 (UNS N06022) square bars in precision bright and heavy forged conditions for aggressive chemical environments.
Hastelloy C22 Bright Square Bars
Hastelloy C22 Forged Square Bars
Hastelloy C22 vs. Hastelloy C276 vs. Hastelloy B2
| Comparison Parameter | Hastelloy C22 (UNS N06022) | Hastelloy C276 (UNS N10276) | Hastelloy B2 (UNS N10665) |
|---|---|---|---|
| Chromium Content (Cr) | High (20.0 – 22.5%) | Medium (14.5 – 16.5%) | Minimal (1.0% max) |
| Molybdenum Content (Mo) | Medium-High (12.5 – 14.5%) | High (15.0 – 17.0%) | Ultra-High (26.0 – 30.0%) |
| Oxidizing Environment Service | Exceptional (Ferric chloride, wet chlorine, nitric acid) | Moderate to Good | Unsuitable (Rapid corrosion) |
| Reducing Acid Resistance | High (Hydrochloric, sulfuric acid) | Exceptional (Strong reducing conditions) | Extreme (Pure hydrochloric acid environments) |
| Versatility Rating | Highest (Excels in mixed oxidizing/reducing chemical streams) | High (Standard alloy for reducing conditions) | Specialized (Strictly for non-oxidizing acids) |
Key Advantages of Hastelloy C22 Square Bar
Handles Harsh Chemicals
Resists mixed acids, wet chlorine, and corrosive solutions that quickly destroy standard stainless steels.
Prevents Pitting & Crevice Corrosion
Protects components from localized rust, pitting, and cracking in stagnant or high-temperature environments.
Strong & Reliable Under Heat
Maintains structural stability and strength during high-temperature chemical reactions.
Easy to Machine & Weld
Low carbon content prevents weakening at welded joints, ensuring long-lasting, leak-free assemblies.
Key Applications of Hastelloy C22 Square Bar
| Industry | Applications | Key Benefit |
|---|---|---|
| Chemical Processing | Reactor agitator shafts, acid mixing blades | Stops rapid metal erosion in aggressive acid solutions. |
| Pharmaceuticals | Process valving, batching vessel supports | Ensures clean, contamination-free processing during strict wash cycles. |
| Pollution Control (FGD) | Scrubber damper shafts, spray headers | Withstands harsh sulfurous gas and acidic slurry exposure. |
| Waste Incineration | Burner feed shafts, draft fan components | Resists extreme thermal corrosion and mixed chemical gases. |
Quality Assurance & Inspection
Every order fulfilled by an established Hastelloy C22 Square Bars Exporter undergoes rigorous testing protocols to verify structural integrity and mill compliance:
- Chemical Verification: Positive Material Identification (PMI) and optical emission spectroscopy to verify element composition per ASTM B574.
- Mechanical Testing: Tensile, yield, and elongation testing to ensure compliance with the 690 MPa minimum tensile threshold.
- Intergranular Corrosion Testing: ASTM G28 Method A evaluation to confirm immunity to intergranular attack in oxidized acid environments.
- Ultrasonic Examination: Volumetric non-destructive testing per ASTM A388 on heavy square sections to detect internal voids, porosity, or inclusions.
Global Export Markets
As an established Hastelloy C22 Square Bars Exporter, Aurum Overseas supplies fully certified UNS N06022 Square Bars to global chemical processing 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 significantly higher chromium (20-22.5% vs 14.5-16.5%), providing superior resistance to strongly oxidizing media, wet chlorine, and nitric acid environments while maintaining comparable resistance to reducing acids.
UNS N06022 Bright Square Bars feature tight dimensional tolerances and smooth cold-drawn surface finishes, reducing lathe setup times and material scrap when machining precision shafts, fittings, and valving components.
No. Because of its ultra-low carbon content (0.01% max), Hastelloy C22 resists grain-boundary precipitation during welding and can typically be placed into chemical service in the as-welded condition.
UNS N06022 Forged Square Bars undergo thermo-mechanical processing that refines the internal grain structure, delivering uniform multi-directional mechanical properties suited for structural supports in high-pressure vessels.
All orders dispatched by Aurum Overseas include full EN 10204 3.1 Mill Test Certificates detailing chemical composition, heat numbers, heat treatment parameters, and mechanical testing results.
Contact Aurum Overseas
Partner with a trusted Hastelloy C22 Square Bars Supplier for certified stock, custom sawing, and fast international dispatch.