Nickel bronze

Table 14. Properties of Copper-Nickel Alloys and Leaded Nickel Bronze and Brass...

The leaded nickel bronzes, UNS 97600 (20% nickel-silver) and UNS C 97800 (25% nickel-silver), are used for marine, ornamental, and sanitary castings, and valves and pumps, and for ornamental hardware, sanitary castings, valves, and musical instmment parts, respectively. 

P. It was developed by Chase Division, Kennecott Copper Corp., in 1950. The machinability rating is 80. The hot-working properties are comparable to those of a high copper commercial bronze and are superior to lead-containing free-machining copper alloys. The tensile strength is high, and the electrical and thermal conductivities are similar to those of nickel bronze CDA No. 191, and about one half those of copper (see Copper alloys). 

Porous media are also manufactured from porcelain, glass, silicon carbide, and a number of metals Monel, Inconel, nickel, bronze, Hastelloy C, Stellite L-605, gold, platinum, and many types of stainless steel. Two manufacturers of porous septa are Mott (mottcorp.com) and Pall (pall.com). The air permeabilities of Table 14-23 indicate the relative flow resistances of the various grades to homogeneous fluid but may not be used in designing a disperser for submerged... 

The following table 4 gives the number of nickel and nickel-bronze coins struck since their adoption and down to 1914, in a few of the more important countries of the world ... 

It is estimated that up to the end of 1912 some 909,167,567 coins of pure nickel had been issued, and 4,543,799,571 coins of nickel-bronze.1... 

Various alloys of nickel and copper are of great industrial importance. The two metals mix in all proportions, the nickel reducing the conductivity and increasing the hardness of the copper. The alloys are variously known as cupro-nickel, nickel bronze, and nickel brass, whilst certain of them have special names such as monel metal, Benedict metal, nickel or German silver, etc. 

Although, in the anhydrous condition, COFj is not corrosive to ordinary metals used for construction, when moist the compound behaves in a highly corrosive manner. In these circumstances, copper, nickel, "Monel, "Inconel, or "Hastelloy C are recommended. For ordinary temperatures, natural rubber, "Viton, Teflon and "Kel-F are compatible [277,1199]. Steel is acceptable at moderate temperatures [84a]. A corrosion-resistant distillation column made entirely from nickel, bronze and "Kel-F has been used to separate the corrosive gas mixture OFj, COF, CjFg, C F Cl, ClOj, CIO3, CIO3F, ClOjF and HF [1573]. 

H. Lechtman, Architectural Cramps at Tiwanaku Copper-Arsenic-Nickel Bronze, inMetal-lurgica Antiqual in Honour of HanS Gert Bachmann and Robert Maddin, T. Rehren, A. Hauptmann, and J.D. Muhly (eds.), Deutches Bergbau-Museum Bochum, 1998, pp. 77-92. 

Part 4. Copper-tin-nickel alloys (tin-nickel bronzes) ... 

---