Disadvantages Of Brass

Many parts, for example, screws, nuts, bolts, and fittings, are produced by automatic turning operations [10]. Some alloying elements sometimes added to impart special characteristics to brass. Lead, which is insoluble in copper alloys, is used to improve machinability of leaded brass. However, Pb and Bi or other elements that are used to improve the machinability often deteriorate the low and high temperature ductility of brass [11]. The content of Pb element is varies between 2.5 and 3.5 %, which make the machining processes at high speed and good surface [12].

Leaded brass rods are widely used in many applications such as decoration and architecture for electrical and structural systems. Many parts, for example, screws, nuts, bolts, and fittings, are produced by automatic turning operations [10]. Some alloying elements sometimes added to impart special characteristics to brass. Lead, which is insoluble in copper alloys, used to improve machinability of leaded brass. However, Pb and Bi or other elements that are used to improve the machinability often deteriorate the low and high temperature ductility of brass [11].

This kind of stainless steel is normally used in nuclear components. Duplex has a higher chromium than prescription hardening types of stainless steel, it also contains less carbon but has similar nickel to PH grades of stainless steel. Other materials can be added to change the properties of

]. Some alloying elements sometimes added to impart special characteristics to brass. Lead, which is insoluble in copper alloys, used to improve machinability of leaded brass. However, Pb and Bi or other elements that are used to improve the machinability often deteriorate the low and high temperature ductility of brass [11]. The content of Pb element is varies between 2.5 and 3.5 %, which make the machining processes at high speed and good surface [12].

Mixes of Aluminum oxide and barium carbonate with and without the incorporation of silica fume were prepared in the same manner. Silica fume was additionally introduced in two proportions viz. 5 and 10 weight %. Complete coding of samples prepared is given in Table 1. The mixture containing aluminum oxide and barium carbonate were pulverized in a high-energy planetary ball mill.

As a result, particular alloys must be added to stabilize austenite . The most important austenite stabilizer is nickel, & others include carbon, manganese, & nitrogen . Special properties, including corrosion resistance, oxidation resistance, & strength at high temperatures, can be integrated into austenitic stainless steels by adding particular alloys like chromium, nickel, molybdenum, nitrogen, titanium, & columbium . & while carbon can increse strength at high temperatures, it can also decrease corrosion resistance by creating a compound with chromium .Austenitic alloys can't be hardened by heat treatment . That implies they don't harden in the welding HAZ

Solder is an alloy of tin and lead with alloy melting point. The joint is heated by using a solder iron. Its main uses are for: electrical connections in a circuit Joins between pipes Joins in plumbing Brazing This process is exactly the same as in soldering, but the difference is that brass is used as the solder as a pose to tin. Why is brass used? Brass is used because it has a much higher melting point than tin, so the temperatures which are involved are much higher.

Silver is the only better conductor of electricity, but it is too expensive. Pure copper is a better conductor of electricity than copper alloys, due to the impurities in the alloys. Copper is also Weil 2 very malleable. Malleability is the ability to be easily shaped. Copper doesn’t break when hammered, stamped, forged, or spun into unusual shapes.

As stated by Young (2008), wrought iron is the purest form of metal consisting 99.85% true iron with less than 0.1% of Carbon. The lack of Carbon in the iron makes it resistance to corrosion for a longer period of time. The corrosion process is prolonged due to the lack of Carbon content. Wrought iron has good properties strength because it is strong in both tension and compression. It is more fibrous in texture, more ductile and has a good resistance of corrosion compared to cast iron (Kent, 1888).

Hastelloy® C-22 alloy has a Critical Pitting Temperature greater than 140˚C whereas stainless steel type 316L only has a Critical Pitting Temperature of 15˚C. This shows that C-22 is a far better at resisting corrosion at higher temperatures than its Stainless Steel counterparts. The same applies to C-276; which is due to them containing a higher composition of carbon and molybdenum than that of Stainless Steel, Mild Steel and Iron. A specific advantage of C-22 is that it can be easily welded. C-22HS has the same resistance as C-22 but it has double the yield strength.