C22 Hastelloy® Alloy Round Bar | Unrivaled Corrosion Resistance in Oxidizing & Reducing Environments

✓ Oxidizing Acid Dominance: Resists 65% HNO₃ at 50°C (122°F) with <0.02mm/year corrosion rate – industry-leading performance in nitric acid systems.

✓ Chloride Immunity: PREN ≥50, validated by 10,000+ hours in ASTM G48 Method D seawater crevice corrosion testing.

✓ Thermal Stability: Maintains integrity from -50°C to 600°C (-58°F to 1,112°F) under cyclic thermal stress.

✓ Fabrication Precision: Hot-rolled and cold-drawn bars with ±0.5% diameter tolerance and Ra ≤0.8μm surface finish for CNC machining.

C22 Hastelloy® Alloy Round Bar (UNS N06022)

Engineered to conquer the most aggressive oxidizing and reducing environments, C22 Hastelloy® alloy round bar combines a nickel-chromium-molybdenum-tungsten matrix (Ni-56%, Cr-22%, Mo-13%, W-3%) to deliver unmatched resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC). Certified to ASTM B574, ASME SB-574, and NACE MR0175, this alloy outperforms C276 Hastelloy in high-temperature oxidizing acids like nitric and mixed acid-chloride media, offering 2x the lifespan of 316L in chemical, pharmaceutical, and pollution control applications.

Diameter Range: 5mm–300mm (hot-rolled) / 3mm–100mm (cold-drawn)
Length: 1m–6m standard (cut-to-length precision ±0.5mm)
Surface Finishes: Pickled & Passivated, Polished (Ra ≤0.6μm), Electropolished (Ra ≤0.2μm)
Mechanical Properties: Yield Strength ≥360 MPa | Tensile Strength ≥690 MPa | Elongation ≥45% | Hardness ≤220 HBW

Parameter Category	Value/Description
Material Standard	ASTM B574 (Hot-Finished/Cold-Finished), ASME SB574, EN 2.4602
Chemical Composition (%)	Ni ≥56, Cr 20–22.5, Mo 12.5–14.5, Fe 2.0–6.0, Co ≤2.5, W 2.5–3.5, C ≤0.015, Mn ≤0.50, Si ≤0.08, S ≤0.02, P ≤0.02, V ≤0.35
Tensile Strength (MPa)	≥690 (Annealed)
Yield Strength (MPa)	≥310 (Annealed)
Elongation (%)	≥45 (in 50mm gauge length)
Hardness	Brinell (HBW): ≤200; Rockwell (HRB): ≤95 (Annealed)
Density (g/cm³)	8.69
Melting Range (°C)	1350–1390
Thermal Conductivity (W/m·K)	10.9 (at 20°C)
Thermal Expansion (10⁻⁶/°C)	12.2 (20–100°C)
Electrical Resistivity (Ω·m)	1.28 × 10⁻⁶ (at 20°C)
Elastic Modulus (GPa)	206
Magnetic Permeability	Non-magnetic
Corrosion Resistance	Exceptional resistance to oxidizing and reducing acids (HCl, H₂SO₄, HNO₃), chlorides, pitting, crevice corrosion, and stress corrosion cracking (SCC). Performs well in mixed acid environments.
Heat Treatment	Solution Annealing: 1121–1177°C (2050–2150°F) followed by rapid cooling (water quench).
Surface Finishes	Hot-rolled, Cold-drawn, Annealed & Pickled, Ground, Polished (Ra ≤0.8μm).
Round Bar Dimensions	– Diameter: 5mm–300mm (Cold-Finished) – Diameter: 10mm–500mm (Hot-Finished) – Length: 1000mm–6000mm (customizable).
Key Applications	Chemical reactors, flue gas desulfurization (FGD) systems, pharmaceutical equipment, nuclear waste processing, and seawater heat exchangers.

C22 Hastelloy® Alloy Round Bar (UNS N06022) Applications

Industry	Critical Components	C22 Round Bar Advantage
Chemical Processing	Nitric acid reactors, chlorination systems	0.015mm/year corrosion rate in 65% HNO₃ at 60°C.
Pharmaceutical	High-purity solvent recovery columns	Complies with FDA CFR 211.65 and EU GMP Annex 1.
Pollution Control	Flue gas scrubbers, wastewater treatment	Resists 15% HCl + 5% HF at 80°C (176°F).
Nuclear Fuel	UF₆ handling tools, reprocessing equipment	Immune to hydrogen fluoride (HF) up to 300°C (572°F).

C22 Hastelloy® Alloy Round Bar (UNS N06022)Product Packaging

C22 Hastelloy® Alloy Round Bar (UNS N06022) deliver unmatched resistance to hydrochloric acid, chlorine gas, and extreme thermal cycling (up to 1,200°C). To preserve dimensional precision and metallurgical stability during global transit, we deploy aerospace-grade packaging systems and intelligent logistics protocols certified to NACE MR0175, AMS 5759, and EN 10088-3 standards.

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