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Nickel white copper Tubes and Pipes

Nickel white copper plateis a copper-based alloy with nickel as the main additive element. It is silver-white with metallic luster, hence the name Cupronickel. Copper and nickel can be infinitely dissolved in each other to form a continuous solid solution, that is, regardless of the ratio of each other, it is always an α-single-phase alloy. When nickel is melted into red copper and the content exceeds 16%, the color of the resulting alloy becomes as white as silver. The higher the nickel content, the whiter the color. The nickel content in Nickel white copper plateis generally 25%.

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Product Details

Hard Condition: M (soft state), Y2 (1/2 hard), Y (hard);

Size: Diameter OD1.1mm~300mm×Wall Thickness 0.2mm~20mm ×Length2000mm~6000mm;

Grade comparison table

China	ISO	USA	Japan	France	UK	DIN
B0.6
B5
B19	MH19	C71000	CN104	Cu-Ni20FelM	CuNi20Fe	C7100
B25

Chemical Composition Table

Alloy Grade	Ni+Co	Fe	Mn	Zn	Al	Si	Mg	Pb	S	C	P	Cu	Total impurities
B0.6	0.57-0.63	0.005				0.002		0.005	0.005	0.002	0.002	Balance	0.1
B5	4.4-5.0	0.20						0.01	0.01	0.03	0.01	Balance	0.5
B19	18.0-20.0	0.5	0.5	0.3		0.15	0.05	0.001	0.01	0.05	0.01	Balance	1.8
B25	24.0-26.0	0.5	0.5	0.3		0.15	0.05	0.001	0.01	0.05	0.01	Balance	1.8

Physical performance table

Characteristics	Alloy Grade
Characteristics	B0.6	B5	B19	B30
Liquid Point/℃	1085.5	1121.5	1191.7	1228.7
Solid Point/℃		1087.5	1131.5	1172.6
Density/kg·m-3	8960	8700	8900	8900
Specific heat capacity（20℃）/J·（kg·K）-1			378	387
Linear expansion coefficient（20℃）/℃-1		16.4x10-6	16x10-6	15.3x10-6
Thermal conductivity（20℃）/W·（m·K）-1	272.14	130.0	38.5	36.8～37.3
Resistivity（20℃）/μΩ·m	0.31	0.70	0.289
Temperature Coefficient of Resistance αρ/℃-1	0.002758（0℃）		0.00029（100℃）
	0.003147（20℃）		0.000199（300℃）
			0.000127（500℃）
Elastic Modulus/GPa	120		140	150

Grades, characteristics and applications

Alloy Grade	Main features	Application examples
B0.6	It is an electrical copper-nickel alloy, and its characteristic is that the thermoelectric force is small. Maximum working temperature is 100℃	Not long wire used to make special thermocouple (platinum-platinum rhodium hot spot couple)
B5	It is a structure of white copper, which has higher strength and corrosion resistance than copper, and has no tendency to corrosion	Used as corrosion-resistant parts of ships
B19	It is a structural copper-nickel alloy with high corrosion resistance and good mechanical properties. It has good press workability in hot and cold conditions, and can maintain high strength and plasticity at high and low temperatures, and its workability is not good.	It is used for precision instrument parts, metal mesh and chemical-resistant chemical machinery parts that work in neat, fresh water and sea water, as well as medical appliances and coins.
B25	It is a structural copper-nickel alloy with high mechanical properties and corrosion resistance. It has good press workability in hot and cold conditions. Because of its higher nickel content, its mechanical properties and corrosion resistance are higher than those of B5 and B19.	It is used for anti-corrosion parts that work in steam and sea water, as well as metal pipes and condenser pipes that work under high temperature and high pressure.

Nickel white copper Tubes and Pipes

Product Details

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