C4 Hastelloy® Alloy Plate | Exceptional Corrosion Resistance for Severe Environments

✓ Sulfuric Acid Dominance: Resists 98% H₂SO₄ at 50°C (122°F) with <0.01mm/year corrosion rate – 5x lifespan vs. 316L.

✓ Chloride Immunity: PREN ≥50, validated by 15,000+ hours in ASTM G48 Method D seawater crevice corrosion testing.

✓ Thermal Stability: Maintains structural integrity from **-50°C to 400°C (-58°F to 752°F).

✓ Welding Precision: Ultra-low carbon (0.015% max) minimizes carbide precipitation during welding (ERNiCrMo-7 filler recommended).

C4 Hastelloy® Alloy Plate (UNS N06455)

Engineered to excel in extreme oxidizing and reducing environments, C4 Hastelloy® alloy plate combines a nickel-chromium-molybdenum matrix (Ni-65%, Cr-16%, Mo-16%) to deliver unparalleled resistance to sulfuric acid, hydrochloric acid, and chloride-induced stress corrosion cracking (SCC). Certified to ASTM B575, ASME SB-575, and NACE MR0175, this high-performance alloy outperforms conventional stainless steels and other nickel alloys in chemical processing, pollution control, and nuclear applications where reliability is non-negotiable.

Thickness Range: 3mm–120mm (hot-rolled ±0.5%; cold-rolled ±0.03mm)
Surface Finishes: Pickled, Grinded (Ra ≤1.6μm), Electropolished (Ra ≤0.4μm)
Mechanical Properties: Yield Strength ≥300 MPa | Tensile Strength ≥670 MPa | Elongation ≥40% | Hardness ≤220 HBW

Parameter Category	Value/Description
Material Standard	ASTM B575, ASME SB575, EN 2.4610
Chemical Composition (%)	Ni ≥65, Cr 14–18, Mo 14–17, Fe ≤3.0, C ≤0.015, Mn ≤1.0, Si ≤0.08, S ≤0.03, Co ≤2.0, Ti ≤0.7, Al ≤0.5
Tensile Strength (MPa)	≥690 (Annealed)
Yield Strength (MPa)	≥283 (Annealed)
Elongation (%)	≥40 (in 50mm gauge length)
Hardness	Brinell (HBW): ≤230; Rockwell (HRB): ≤100 (Annealed)
Density (g/cm³)	8.64
Melting Range (°C)	1325–1370
Thermal Conductivity (W/m·K)	11.5 (at 20°C)
Thermal Expansion (10⁻⁶/°C)	12.6 (20–100°C)
Electrical Resistivity (Ω·m)	1.28 × 10⁻⁶ (at 20°C)
Elastic Modulus (GPa)	205
Magnetic Permeability	Non-magnetic
Corrosion Resistance	Excellent resistance to oxidizing and reducing acids (HCl, H₂SO₄, H₃PO₄), chlorides, and pitting/crevice corrosion. Performs well in sulfur-containing environments.
Heat Treatment	Solution Annealing: 1120–1170°C followed by rapid cooling (water quench).
Surface Finishes	Hot-rolled, Cold-rolled, Annealed & Pickled, Ground, Polished (Ra ≤0.8μm).
Plate Dimensions	– Thickness: 3mm–200mm – Width: 1000mm–3000mm – Length: 2000mm–12000mm (customizable).
Key Applications	Chemical processing reactors, flue gas desulfurization (FGD) systems, nuclear fuel reprocessing, pickling tanks, and sulfuric acid production.

C4 Hastelloy® Alloy Plate (UNS N06455) Applications

Industry	Critical Use Cases	C4 Hastelloy Advantage
Chemical Processing	Sulfuric acid concentrators, pickling tanks	0.005mm/year corrosion rate in 98% H₂SO₄ at 60°C.
Pollution Control	Flue gas desulfurization (FGD) scrubbers	Resists 15% HCl + 5% HF at 80°C (176°F).
Nuclear Fuel	Spent fuel reprocessing equipment	Immune to nitric acid corrosion up to 90% concentration.
Oil & Gas	Sour gas pipelines, acidizing tools	Survives H₂S >30,000 ppm + CO₂ at 150°C (302°F).

C4 Hastelloy® Alloy Plate (UNS N06455) Product Packaging

C4 Hastelloy® Alloy Plate (UNS N06455) deliver unmatched resistance to pitting, chloride stress corrosion, and extreme temperatures (up to 1,100°C). To safeguard these high-value materials from mill to mission-critical applications, we deploy aerospace-grade packaging and specialized handling protocols compliant with ASME SB-575, NACE MR0175, and EN 10088-3.

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