CORROSION RESISTANCE Alloy C22 is one of the most corrosion-resistant alloys available, even outperforming C276 and 625. It is resistant to almost all reducing and oxidizing environments, including strong oxidizers, seawater, and organic acids. In addition, C22 has excellent resistance to chloride-induced localized corrosion, including pitting, crevice corrosion, and stress corrosion cracking. OXIDATION RESISTANCE C22 has excellent resistance to oxidation, carburization, and sulfidation at elevated temperatures. However, C22 should not be used at temperatures above 1250°F due to the possible formation of embrittling phases. MECHANICAL PROPERTIES C22 is typically provided in the annealed condition with a minimum yield strength of 45 ksi. However, C22 can be cold worked to higher strength levels. HEAT TREATMENT C22 is typically annealed at 2050°F (1121°C), followed by rapid cooling. WORKABILITY C22 can be hot worked or cold worked. However, C22 work-hardens rapidly. Therefore, cold working must often be performed in stages with intervening anneals. Parts should be annealed after cold working.

Composition		Ni	Cr	Fe	Mo	W	Co	C	Mn	Si	S	V	P	Ti
Content (%)	Min.	Bal.	20	2		2.5
	Max.		22.5	6		3.5	2.5	0.015	0.5	0.08	0.02	0.35	0.02

Tensile Strength (σb/MPa)	Yield Strength (σp0.2/MPa)	Elongation (σ5/%)
758	363	62

Bar	Sheet/Strip	Pipe
ASTM B462 ASTM B564	ASTM B575A STM B906	ASTM B622 ASTM B619 ASTM B626

Hastelloy C-22 available sizes and specifications
Grade	Hastelloy C-22
Nickel plate	Thickness: 0.3mm - 150.0mm Width: 1000mm - 3000mm
Nickel strip/ nickel foil	Thickness: 0.02mm - 16.0mmWidth: 5mm - 3000mm
Nickel coil	Thickness: 0.3mm - 16.0mm Width: 1000mm - 3000mm
Nickel pipe	Outside diameter: 6mm - 1219mm Thickness: 0.5mm - 100mm
Nickel Capillary Pipe	Outside diameter: 0.5mm - 6.0mm Thickness: 0.05mm - 2.0mm
Nickel bar	Diameter: Ф4mm - Ф600mm
Nickel wire rod	Diameter：Ф0.01mm - Ф6mm

The exceptional corrosion resistance of C22 has promoted its use in many different markets wherever harsh environments are encountered, including the chemical process, pharmaceutical, food processing, oil & gas, power generation, and the paper industries. CRA offers specialty alloy C22 seamless pipe & tube for use in multiple industries and applications, including: ▪ Chemical processes ▪ Food Processing ▪ Pharmaceutical Industry ▪ Oil & Gas ▪ Power Generation ▪ Pulp & Paper Industries