Tubo di nichel

Nickel 200 (UNS N02200)/Nickel 201 (UNS N02201)

Alloy 200/201 is extremely resistance to caustic alkalies up to and including the molten state. The extra-low carbon content of Alloy 200/201 gives virtual immunity to intergranular attack above about 315°C. The presence of chlorates must be kept to aminimum, as they accelerate the rate of attack.

Good resistance to corrosion in acids and alkalis and is most useful under reducing conditions. Outstanding resistance to caustic alkalis up to and including the molten state. In acid, alkaline and neutral salt solutions the material shows good resistance, but in oxidizing salt solutions severe attack will occur. Resistant to all dry gases at room temperature and in dry chlorine and hydrogen chloride may be used in temperatures up to 550C. Resistance to mineral acids varies according to temperature and concentration and whether the solution is aerated or not. Corrosion resistance is better in de-aerated acid.

Item Name	capillary pure nickel tube
Grade	Ni200, Ni201, N4, N6
Standard	ASTM B161 B163
Dimension(MM)	OD1.0-168 xID0.1-10x 100-15000 MM

Grade	Ni+Co	Cu	Si	Mn	C	Mg	S	P	Fe
N4	99.9	0.015	0.03	0.002	0.01	0.01	0.001	0.001	0.04
N6	99.5	0.1	0.1	0.05	0.1	0.1	0.005	0.002	0.1
Ni201	99	≤0.25	≤0.35	≤0.35	≤0.02		≤0.01		≤0.40
Ni200	99	0.2	0.3	0.3	0.15		0.01		0.4

Physical Data

Density	8.89g/cm3
Specific Heat	0.109(456 J/kg.℃)
Electrical Resistivity	0.096×10-6ohm.m
Melting Point	1435-1446℃
Thermal Conductivity	70.2 W/m-K
Mean Coeff Thermal Expansion	13.3×10-6m/m.℃

Typical Mechanical Properties

Diameter	Tensile strength, min Mpa,		Yield strength(0.2%offset) ,min		Elongation in 4D or 4W min,%
	pound/in2		Pound/in2
	UNS N02200	UNS N02201	UNS N02200	UNS N02201	UNS N02200	UNS N02201
Outer diameter<=5in(127mm	55000	50 000	15 000	12 000	35	35
	-380	-345	-105	-80
Outer diameter	55 000	50 000	12 000	10 000	40	40
<5in(127mm)	-380	-345	-80	-70

Application:
 * Manufacture and handling of sodium hydroxide, particularly at temperature above 300C.
* Production of viscose rayon. Manufacture of soap.
* Analine hydrochloride production and in the chlorination of aliphatic hydrocarbons such as benzene, methane and ethane.
* Manufacture of vinyl chloride monomer.
* Reactors and vessels in which fluorine is generated and reacted with hydrocarbons.
* Processes using caustic alkalines
* Food Processing
* Synthethic Fiber Production