Silicon Metal For Aluminum Alloy

The role of metal silicon in casting aluminum alloys is:

1. Improve the high temperature fluidity of the alloy;
2. Reduce shrinkage;
3. Reduce the tendency of thermal cracking;
4. Improve wear resistance

Of course, it is not that the more silicon content, the better. When the silicon content of the cast aluminum alloy exceeds 14%, silicon and aluminum form a hypereutectic. Difficult to process.High silicon cast aluminum alloys will seriously corrode the crucible.

Metallurgical Grade Silicon Metal

Metallurgical grade silicon metal mainly used in the production process of steel making, casting, and aluminum products

This product is smelted by quartz and coke in an electric heating furnace. The content of the main component silicon is about 98%, and the remaining impurities are iron, aluminum, calcium, etc.Technicians will classify the Fe, Al, and Ca elements in silicon metal into grades, making it easier to distinguish between different silicon metal purity levels.

Chemical Composition:

Garde	Composition
	Si Content(%)	Impurities(%)
		Fe	Al	Ca	P
1501	99.69	0.15	0.15	0.01	≤0.004%
1502	99.68	0.15	0.15	0.02	≤0.004%
1101	99.79	0.1	0.1	0.01	≤0.004%
2202	99.58	0.2	0.2	0.02	≤0.004%
2502	99.48	0.25	0.25	0.02	≤0.004%
3303	99.37	0.3	0.3	0.03	≤0.005%
411	99.4	0.4	0.1	0.1	≤0.005%
421	99.3	0.4	0.2	0.1	-
441	99.1	0.4	0.4	0.1	-
551	98.9	0.5	0.5	0.1	-
553	98.7	0.5	0.5	0.3	-

Application:

(1) Improve the heat resistance, wear resistance and oxidation resistance in refractory material and power metallurgy industry
(2) Basic raw material that high polymer of organic silicon formatting.
(3) Iron base alloy additive, the alloy pharmaceutical of silicon steel, thus improve the steel hardenability.
(4) It is used in high-temperature material production in order to manufacture enamels and pottery and in producing ultra-pure silicon wafers.