Table of Contents
- Hastelloy C4 Square & Hex Bars Overview
- Technical Specifications
- Chemical Composition & Mechanical Properties
- Types of Hastelloy C4 Bars: Hexagonal & Square Profiles
- Key Advantages of Hastelloy C4 Square & Hex Bars
- Key Applications of Hastelloy C4 Square & Hex Bars
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Hastelloy C4 Square & Hex Bars Overview
Hastelloy C4 Bars are provided by Aurum Overseas, a leading global supplier and exporter. Our UNS N06455 Square Bars and UNS N06455 Hexagonal Bars are characterized by exceptional high-temperature thermal stability and resistance to grain-boundary precipitation. As a top Hastelloy C4 Square Bars and Hex Bars Supplier, all our stock fully complies with ASTM B574, ASME SB574, and DIN 17752 standards.
We offer competitive prices on Alloy C4 Bars and Nickel Alloy C4 Bars without compromising material quality or testing integrity. As a trusted Hastelloy C4 Square Bars and Hex Bars Exporter, our inventory includes hot-rolled square stock and bright hex profiles engineered for precision CNC machining across custom sizes.
Our bars are widely used in chemical processing plants, fertilizer production, pickling systems, and agrochemical synthesis. Contact Aurum Overseas today for instant price quotes and official mill test certificates.
Technical Specifications
| Technical Parameter | Specification Standard |
|---|---|
| Material Specifications | ASTM B574, ASME SB574, DIN 17752, ISO 9723 |
| UNS Designation | UNS N06455 |
| Across-Flats (AF) Size Range | 6.0 mm to 120.0 mm (1/4" to 4-1/2" Square & Hexagon Profiles) |
| Length Options | 1,000 mm to 6,000 mm, Precision Sawing Cut-to-Length |
| Surface Finishes | Cold Drawn, Centerless Ground, Bright Annealed, Hot Rolled, Forged |
| Heat Treatment Condition | Solution Annealed (1040 °C to 1080 °C, Rapid Air or Water Quenched) |
| Dimensional Tolerances | ASTM B574 / ISO 286-2 (h9, h10, h11 profile tolerances) |
| HSN Code | 75052200 |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Standard / Grade | Werkstoff Nr. | UNS Designation |
|---|---|---|
| Hastelloy C4 | 2.4610 | N06455 |
Chemical Composition (%)
| Element | Specification Range (UNS N06455) |
|---|---|
| Nickel (Ni) | 65.0 min |
| Molybdenum (Mo) | 14.0 – 17.0 |
| Chromium (Cr) | 14.0 – 18.0 |
| Iron (Fe) | 3.0 max |
| Cobalt (Co) | 2.0 max |
| Titanium (Ti) | 0.7 max |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 0.08 max |
| Carbon (C) | 0.01 max |
Mechanical & Physical Properties
| Property Parameter | Metric Units | Imperial Units |
|---|---|---|
| Density | 8.64 g/cm³ | 0.312 lb/in³ |
| Melting Point | 1350 – 1400 °C | 2460 – 2550 °F |
| Tensile Strength (Min) | 783 MPa | 113,500 Psi (113.5 ksi) |
| Yield Strength (0.2% Offset, Min) | 365 MPa | 53,000 Psi (53 ksi) |
| Elongation (Min) | 55 % | 55 % |
Types of Hastelloy C4 Bars: Hexagonal & Square Profiles
Aurum Overseas supplies Hastelloy C4 (UNS N06455) bars in precision hexagonal and square profiles for high-temperature chemical stability applications.
Hastelloy C4 Hex Bars
Hastelloy C4 Square Bars
Key Advantages of Hastelloy C4 Square & Hex Bars
Eliminate Costly Heat-Treatment Delays
Titanium-stabilized matrix with ultra-low carbon allows direct, post-weld deployment without expensive secondary solution annealing.
Zero Grain Boundary Precipitation
Maintains complete structural integrity during high-temperature operations (650 °C–1040 °C), preventing premature component failure and emergency shutdowns.
Maximum Equipment Operational Lifespan
Superior resistance against aggressive mixed acids, hot chloride streams, and oxidizing solutions drastically reduces maintenance frequency.
Flawless Precision Machining
High-purity alloy structure ensures smooth turning, milling, and threading with minimal tool wear, lowering overall component manufacturing costs.
Key Applications of Hastelloy C4 Square & Hex Bars
| Industry | Applications | Operational Benefit |
|---|---|---|
| Chemical Processing | Agitator shafts, hex drain plugs, process valve stems | Eliminates thermal degradation in hot inorganic acids, cutting maintenance downtime. |
| Agrochemical Production | Fertilizer mixers, hex fasteners, reactor pump shafts | Prevents severe chloride pitting and stress cracking to extend equipment service life. |
| Flue Gas Scrubbing | Reheater brackets, duct hex hardware, flange bolting | Resists acidic slurry crevice corrosion, preventing sudden structural joint failures. |
| Metal Pickling Lines | Pickling tie rods, heat exchanger supports, square frame bars | Prevents surface erosion and intergranular attack in hot, mixed-acid wash systems. |
Quality Testing & Inspection
As a certified Hastelloy C4 Square Bars and Hex Bars Exporter, Aurum Overseas enforces complete quality verification protocols on every production heat:
- Positive Material Identification (PMI): 100% XRF chemical analysis verifying 65.0% min Ni, 14–17% Mo, and 14–18% Cr composition.
- Intergranular Corrosion Testing: Corrosion evaluation per ASTM G28 Method A to verify thermal stability and resistance to grain boundary attack.
- Mechanical Validation: Tensile, yield, and elongation testing strictly per ASTM B574 requirements (achieving 55% min ductility).
Global Export Markets
As an established Hastelloy C4 Square & Hex Bar Exporter, Aurum Overseas supplies fully certified ASTM B574 UNS N06455 bars to global chemical processing, agrochemical, flue gas scrubbing, and metal pickling facilities:
USA
Canada
Mexico
Germany
United Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
Hastelloy C4 eliminates tungsten and vanadium while utilizing titanium stabilization, giving it vastly superior thermal stability against grain-boundary precipitation during high-temperature exposure or welding compared to C276.
Hexagon profiles allow rapid indexing and direct machining of threaded fittings, hex nuts, and valve stems on CNC lathes with minimal scrap, whereas square bars are better suited for structural framing and rectangular flange blocks.
No. Thanks to its ultra-low carbon content (0.01% max) and titanium stabilization, Hastelloy C4 retains full corrosion resistance in the as-welded condition without requiring secondary annealing.
All orders from Aurum Overseas are shipped with EN 10204 3.1 Mill Test Certificates detailing heat chemistry, mechanical property test results, and ultrasonic NDT clearance.
Contact Aurum Overseas
Partner with a trusted Hastelloy C4 Square Bars and Hex Bars Supplier for certified high-performance alloy stock, custom cut-to-length sawing, and rapid global delivery.