Hastelloy C-4丨UNS N06455
Hastelloy C-4 (UNS N06455 / W.Nr. 2.4610) is a nickel-chromium-molybdenum alloy developed for superior thermal stability and exceptional corrosion resistance in aggressive chemical environments. The alloy maintains excellent resistance to stress corrosion cracking and oxidizing media after welding, making it ideal for chemical processing, flue gas desulfurization, pollution control, and pharmaceutical applications. Available in pipe, tube, plate, sheet, bar, wire, and forging forms.
Hastelloy C-4 Supplier & Manufacturer
Hastelloy C-4 (UNS N06455 / W.Nr. 2.4610) is a nickel-chromium-molybdenum alloy specifically engineered for outstanding corrosion resistance and exceptional thermal stability. Unlike many corrosion-resistant alloys, Hastelloy C-4 maintains its corrosion resistance after welding and prolonged exposure to elevated temperatures.
The alloy exhibits excellent resistance to oxidizing and reducing chemicals, stress corrosion cracking, pitting corrosion and crevice corrosion. Its ability to remain stable during fabrication and heat treatment makes it a preferred material for demanding chemical processing applications.
JA Alloy supplies Hastelloy C-4 products in pipe, tube, plate, sheet, bar, wire, flange and forging forms manufactured according to ASTM and ASME standards.
Key Features of Hastelloy C-4
- Excellent resistance to oxidizing and reducing environments
- Outstanding thermal stability
- Superior weldability
- Exceptional resistance to stress corrosion cracking
- Excellent resistance to pitting and crevice corrosion
- Good mechanical properties at elevated temperatures
- Suitable for highly aggressive chemical processes
Chemical Composition of Hastelloy C-4
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 14.0 – 18.0 |
| Molybdenum (Mo) | 14.0 – 17.0 |
| Iron (Fe) | ≤ 3.0 |
| Titanium (Ti) | ≤ 0.70 |
| Cobalt (Co) | ≤ 2.0 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 0.08 |
| Carbon (C) | ≤ 0.015 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
Mechanical Properties of Hastelloy C-4
| Property | Value |
|---|---|
| Tensile Strength | 690 MPa min |
| Yield Strength (0.2% Offset) | 310 MPa min |
| Elongation | 40% min |
| Hardness | ≤ 220 HB |
| Density | 8.64 g/cm³ |
| Melting Range | 1350 – 1400°C |
| Modulus of Elasticity | 205 GPa |
Hastelloy C-4 vs Hastelloy C-276
| Property | Hastelloy C-4 | Hastelloy C-276 |
|---|---|---|
| UNS Number | N06455 | N10276 |
| Werkstoff Number | 2.4610 | 2.4819 |
| Thermal Stability | Excellent | Very Good |
| Resistance After Welding | Excellent | Excellent |
| Pitting Resistance | Excellent | Excellent |
| Crevice Corrosion Resistance | Excellent | Excellent |
| Oxidizing Media | Excellent | Excellent |
| Reducing Media | Excellent | Outstanding |
| Typical Applications | Heat-Affected Chemical Equipment | Severe Corrosion Service |
| Best Choice For | Applications Requiring Maximum Thermal Stability | Broad-Spectrum Corrosion Resistance |
Applications of Hastelloy C-4
Chemical Processing
Reactors, heat exchangers, pressure vessels and transfer piping.
Pollution Control
Flue gas desulfurization systems and scrubber equipment.
Pharmaceutical Industry
Corrosion-resistant process equipment.
Specialty Chemical Plants
Equipment handling mixed acids and aggressive chemicals.
Frequently Asked Questions
What is Hastelloy C-4 used for?
Hastelloy C-4 is primarily used in chemical processing, pollution control, pharmaceutical manufacturing and high-temperature corrosive environments.
What makes Hastelloy C-4 different from C-276?
Hastelloy C-4 provides superior thermal stability and retains excellent corrosion resistance after welding and heat treatment.
Is Hastelloy C-4 weldable?
Yes. Hastelloy C-4 offers excellent weldability and maintains corrosion resistance in welded structures.
Is Hastelloy C-4 resistant to stress corrosion cracking?
Yes. The alloy provides excellent resistance to stress corrosion cracking in aggressive environments.
Why Choose J&A Alloy as Your Hastelloy C-4 Supplier?
- Experienced nickel alloy manufacturer
- ASTM and ASME compliant materials
- PMI testing and full traceability
- Global export experience
- Competitive pricing
- Professional technical support
Contact J&A Alloy today for Hastelloy C-4 pricing, technical datasheets, and material recommendations.
