2205

HuaNickel 2205 is an austenitic-ferritic duplex stainless steel with excellent corrosion resistance and strength characteristics. Compared with SUS 316L and HuaNickel SUS 317L, it has better local corrosion resistance and can be used in complete chemical equipment and seawater desalination equipment.

2205Chemical composition：

	C	Si	Mn	P	S	Ni	Cr	Mo	N
Min	―	―	―	―	―	4.5	22	3	0.14
Max	0.03	1	2	0.03	0.02	6.5	23	3.5	0.2

2205Physical properties：

Specific heat(J/kg･K)		460
Resistivity(μΩ･cm)		87.0
Thermal conductivity(W/m･K)		13.9
Average coefficient of thermal expansion(10-6/℃)	20–100℃	12.7
	20–200℃	13.1
	20–300℃	13.5
	20–400℃	13.8
Longitudinal modulus of elasticity(MPa)		19.5 x  10^4
Ferromagnetic		Yes
Melting point(℃)		1420-1465

2205Mechanical properties：

0.2%Yield strength (N/mm2)	Tensile strength (N/mm2)	Elongation (%)	Hardness
≧ 450	≧ 655	≧ 25	(Hv)	(HB)
93	455	572	―	―

2205Alloy properties：

Corrosion Resistance:

Steel	Critical point corrosion temperature (℃)	Critical crevice corrosion temperature (℃)
2205	50	25
SUS 316L	10	0℃hereinafter

2205Uses of alloys：

Typical applications include pumps, valves, flanges, and piping systems for a wide range of applications in the oil and gas, chemical, power, and brewing industries.