High Performance Hastelloy C4 Rod Bright Surface UNS N06455 Cold Rolled
Hastelloy C-4 Rod – Premium Nickel-Chromium-Molybdenum Alloy for Harsh Chemical Environments
Hastelloy C-4 rod (UNS N06455) is a high-performance nickel-chromium-molybdenum alloy renowned for its exceptional resistance to a wide range of aggressive chemicals, including hydrochloric acid, sulfuric acid, and chlorides. Its microstructural stability ensures resistance to sensitization during welding, making it ideal for critical applications in chemical processing, pollution control, and high-temperature systems.
Chemical Composition (ASTM B574)
| Element | Min % | Max % |
|---|---|---|
| Nickel (Ni) | Balance | – |
| Chromium (Cr) | 14.00 | 18.00 |
| Molybdenum (Mo) | 14.00 | 17.00 |
| Iron (Fe) | – | 3.00 |
| Cobalt (Co) | – | 2.00 |
| Manganese (Mn) | – | 1.00 |
| Titanium (Ti) | – | 0.70 |
| Silicon (Si) | – | 0.08 |
| Carbon (C) | – | 0.015 |
| Phosphorus (P) | – | 0.04 |
| Sulfur (S) | – | 0.03 |
Mechanical Properties (Annealed)
| Property | Value |
|---|---|
| Tensile Strength | 69000 psi (476 MPa) |
| Yield Strength (0.2% offset) | 57100 psi (393 MPa) |
| Elongation | 30% |
| Hardness (Rockwell B) | 90 |
| Modulus of Elasticity | 212 GPa |
| Impact Strength (Charpy V-notch) | 381 J (281 ft-lbf) |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.64 g/cm³ (0.312 lb/in³) |
| Melting Point | 1399°C (2550°F) |
| Thermal Conductivity | 10.1 W/m·°C |
| Electrical Resistivity | 1.25 µΩ·m |
| Coefficient of Thermal Expansion (20–100°C) | 10.9 µm/m·°C |
| Specific Heat (20°C) | 406 J/kg·°C |
Standards & Product Forms
Applications
Hastelloy C-4 rod is ideal for:
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Chemical reactors and heat exchangers
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Pollution control equipment
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Pharmaceutical manufacturing systems
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High-temperature piping and valves
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Desulfurization units
FAQs
Q1: What makes Hastelloy C-4 rod suitable for chemical processing applications?
A1: Its high chromium and molybdenum content provide excellent resistance to a wide range of corrosive environments, including hot contaminated mineral acids and chlorides.
Q2: How does Hastelloy C-4 rod perform under high temperatures?
A2: The alloy maintains its mechanical strength and resistance to oxidation at elevated temperatures, making it suitable for high-temperature applications up to 400°C (750°F).
Q3: Is Hastelloy C-4 rod weldable?
A3: Yes, it can be welded using standard techniques such as GMAW, GTAW, and SMAW without concerns of sensitization.
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