Phosphor Copper Series

Phosphorus is a chemical element that has deoxidization properties. When copper is melted, oxygen and other gases from the environment and within the processes will get into the molten metal. These gases can make the metal too porous to be worked or will develop cracks when used for certain applications. Phosphorous helps to remove the oxygen and other gases from copper during the melt as it increases the copper’s strength.

As phosphor is added into molten copper, it forms phosphorus pentoxide that results when the phosphor gathers in the oxygen in the copper. This phosphorous pentoxide is then removed when the copper undergoes the refining process. The remaining phosphor ends up in the solution with the copper. Copper alloys that can be made with phosphor include phosphor copper, and phosphor bronzes.

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Grade list of copper and copper alloys by country
Classification	China	Germany	America	Japan	England	Europe	International
oxygen free copper	TU1	2.0076	C10200	C1020R	C103
	TU2	Cu-OF-H110	C11000	c1011	C101
	Vacuum oxygen free copper	E-Cu58	TU00	c1020	6N
	high purity	copper-OFE	c10500	c10700
Silver copper	TAg 0.1	CuAg 0.1	C10400	C1040		CuAg 0.1
brass	H90	CuZn10	C22000	C2200	CZ101	CuZn10	CW501L
	H70	CuZn30	C26000	C2600	CZ106	CuZn30	CW505L
	H68		C26200	C2620		CuZn33	CW506L
	H65	CuZn35	C27000	C2700	CZ107	CuZn36	CW507L
	H63	CuZn37	C27200	C2720	CZ108	CuZn37	CW508L
	H62	CuZn40	C28000	C2800	CZ109		CW509L
bronze	QSn4-0.3	CuSn4	C51100	C5111	PB101	CuSn4	CW450K
	QSn4-0.3	CuSn5	C51000	C5101		CuSn5	CW451K
	QSn6.5-0.1	CuSn6	C51900	C5191	PB103	CuSn6	CW452K
	QSn8-0.3	CuSn8	C52100	C5210		CuSn8	CW453K
	QSn6.5-0.4
copper-nickel	BZn18-18	CuNi18Zn20	C75200	C7521	NS106	CuNi18Zn20
	BZn18-26	CuNi18Zn27	C77000	C7701	NS107	CuNi18Zn27	CW410J
	BZn15-20		C7541		CW409J
	BZn18-10			C7350
pure copper	TU2	OF-Cu58	C10100	C1011	C101	CW008A	copper oxide
	T2	SW——copper	C11000	C1100	C101		copper - FRHC
	TP2	SF-Cu	C12200	C1220	C106	CW024A	copper - DHP
	TP1	SW-copper	C12000	C1201		CW023A	copper DLP

1. In addition to providing deoxidizing properties, phosphor also provides a range of other benefits. Copper by itself has amazing corrosion resistance, as this property becomes enhanced due to the added phosphor. It also improves tensile strength, removes brittleness characteristics, and improves machinability and workability.

2. Small amounts of phosphor will not impact the natural electrical and thermal conductivity in copper. Yet keep in mind that the more phosphor that is added, the more that the copper conductivity will become depressed. For example, phosphorous deoxidized copper will basically have a copper content of 99.9%. However, this same copper will have a conductivity of only 85% IACS. Certain phosphor bronzes may only have a conductivity ranging between 25% to 50% IACS.

3. Consider the type of application that the copper will be used in and the level of desired conductivity to determine the amount of phosphor that will be necessary. In some cases, the sacrifice in conductivity but the improvement of the copper’s corrosion and strength will be a positive result.

Tin phosphor bronze has higher corrosion resistance, wear resistance and no spark on impact. Used for medium speed, heavy load bearing, maximum working temperature 250℃. It has the characteristics of automatic self-aligning, insensitive to deflection, uniform bearing force, high bearing capacity, radial load at the same time, self-lubricating without maintenance, etc. Tin phosphor bronze is a kind of alloy copper, has good electrical conductivity, not easy to heat, to ensure safety and has a strong fatigue resistance. Tin phosphor bronze socket reed hard wired electrical structure, no rivet connection or friction contact, can ensure good contact, good elasticity, smooth insertion. The alloy has excellent machinability and chip forming property, which can shorten the machining time of parts quickly. As an intermediate alloy, phosphor copper is widely used in copper casting, solder and other fields, and plays an important role in the development of national economy.

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