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| Material Standard: | ASTM B622 / ASME SB622 | Grade: | Alloy C-4 (Hastelloy C-4, UNS N06455, 2.4610) |
|---|---|---|---|
| Outer Diameter: | 3mm - 600mm | Wall Thickness: | 0.1mm - 30mm |
| Length: | Customized / Up To 12m | Yield Strength: | ≥ 276 MPa |
| Tensile Strength: | ≥ 690 MPa | Elongation: | ≥ 40% |
| Density: | 8.6 G/cm³ | Melting Range: | 1335-1380°C |
| Highlight: | Excellent Corrosion Resistance Seamless Tube,High-Temperature Stability Nickel Alloy,Weldable Hastelloy C-4 Alloy Pipe |
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| Attribute | Specification |
|---|---|
| Product Name | Alloy C-4 (Hastelloy C-4) Seamless Tube |
| Material Grade | UNS N06455 / W.Nr. 2.4610 / NS3305 |
| Material Standard | ASTM B622 / ASME SB622 |
| Product Type | Seamless Cold-Drawn / Cold-Rolled Tube |
| Outer Diameter (OD) | 3mm - 600mm |
| Wall Thickness (THK) | 0.1mm - 30mm |
| Length | According to customer requirements (up to 12m) |
| Surface Finish | Pickled, Bright Annealed, Polished |
| Brand | DINGSCO |
Alloy C-4 (UNS N06455) is a high-performance nickel-chromium-molybdenum alloy known for its exceptional metallurgical stability and corrosion resistance. It is the most microstructurally stable member of the widely used Ni-Cr-Mo alloy family, which is renowned for resistance to a wide range of aggressive chemicals, particularly hydrochloric acid, sulfuric acid, and chlorides.
This alloy features a face-centered cubic (FCC) lattice structure with an optimized chemical composition that ensures metallurgical stability and resistance to sensitization. With lower carbon, silicon, and iron content compared to earlier similar alloys such as Hastelloy C-276, Alloy C-4 delivers excellent stability at 650°C to 1040°C and significantly improved resistance to intergranular corrosion. Under proper manufacturing conditions, it can avoid wire-cutting sensitization and corrosion in weld heat-affected zones.
The alloy's excellent corrosion resistance, high-temperature stability, and weldability make it an ideal material choice for the most demanding chemical processing, flue gas desulfurization (FGD), and high-temperature industrial applications.
| Element | Content (Wt.%) |
|---|---|
| Nickel (Ni) | Balance (approx. 65%) |
| Chromium (Cr) | 14.0 - 18.0 |
| Molybdenum (Mo) | 14.0 - 17.0 |
| Iron (Fe) | ≤ 3.0 |
| Cobalt (Co) | ≤ 2.0 |
| Carbon (C) | ≤ 0.015 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 0.08 |
| Titanium (Ti) | ≤ 0.70 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
| Property | Value |
|---|---|
| Density | 8.6 g/cm³ |
| Melting Range | 1335 - 1380 °C |
| Specific Heat (at 20°C) | 427 J/kg*°C |
| Thermal Conductivity (at 20°C) | 10.1 W/m*°C |
| Electrical Resistivity (at 20°C) | 1.24 μΩ*m |
| Crystal Structure | Face-Centered Cubic (FCC) |
| Curie Temperature | < -196°C (Non-Magnetic) |
| Modulus of Elasticity | 211 GPa |
| Property | Value (Solution Annealed Condition) |
|---|---|
| Tensile Strength (Rm) | ≥ 690 MPa (100 ksi) |
| Yield Strength (RP0.2) | ≥ 276 MPa (40 ksi) |
| Elongation (A5) | ≥ 40% |
| Brinell Hardness (HB) | ≤ 200 |
| Reduction of Area | ≥ 50% |
| Alloy Grade | UNS No. | CPT (°C) ASTM G48 Method C 6% FeCl₃ |
CCT (°C) ASTM G48 Method D 6% FeCl₃ |
PREN* |
|---|---|---|---|---|
| Alloy C-4 | N06455 | ≥ 85 | ≥ 50 | ≥ 65 |
| Alloy C-276 | N10276 | ≥ 100 | ≥ 55 | ≥ 68 |
| Alloy C-22 | N06022 | ≥ 110 | ≥ 60 | ≥ 71 |
| Alloy 625 | N06625 | ≥ 50 | ≥ 30 | ≥ 50 |
| 316L SS | S31603 | ≤ 20 | ≤ 5 | ≥ 24 |
| Product Form | Specification Standard | Size Range |
|---|---|---|
| Seamless Tube | ASTM B622 / B626 | OD 3mm - 600mm * THK 0.1mm - 30mm |
| Welded Tube | ASTM B619 / B626 | OD 6mm - 1200mm * THK 0.5mm - 20mm |
| Bar & Rod | ASTM B574 | Diameter 3mm - 500mm |
| Forgings | ASTM B564 | Custom dimensions available |
| Plate & Sheet | ASTM B575 | Thickness 0.3mm - 50mm |
| Strip | ASTM B575 | Thickness 0.1mm - 3.0mm |
| Pipe Fittings | ASTM B366 | 1/2" - 48" (DN15 - DN1200) |
| Wire | Custom specification | Diameter 0.1mm - 8.0mm |
DINGSCO is a leading manufacturer and supplier specializing in high-performance nickel alloy products. With decades of metallurgical expertise and state-of-the-art production facilities, we deliver premium-quality nickel alloy tubes, pipes, bars, plates, and customized components to customers worldwide.
| Alloy Grade | UNS No. | W.Nr. | Key Characteristics |
|---|---|---|---|
| Alloy C-4 | N06455 | 2.4610 | Best thermal stability, excellent HAZ corrosion resistance |
| Alloy C-276 | N10276 | 2.4819 | General-purpose corrosion resistance, wide chemical compatibility |
| Alloy C-22 | N06022 | 2.4602 | Superior oxidizing media resistance, highest PREN value |
| Alloy 625 | N06625 | 2.4856 | High strength, excellent fatigue and thermal fatigue resistance |
| Alloy 718 | N07718 | 2.4668 | Precipitation-hardenable, high strength up to 700°C |
| Alloy 825 | N08825 | 2.4858 | Good resistance to reducing acids and SCC |
| Monel 400 | N04400 | 2.4360 | Excellent resistance to seawater and hydrofluoric acid |
| Inconel 600 | N06600 | 2.4816 | High-temperature oxidation and carburization resistance |
| Alloy C-2000 | N06200 | 2.4675 | Broadest corrosion resistance in the Ni-Cr-Mo family |
| Alloy B-2 | N10665 | 2.4617 | Outstanding resistance to pure hydrochloric acid at all concentrations |
Contact Person: Ms. Julia Wang
Tel: 0086-13817069731