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Calcium silicon alloy
Or called Ferro Calcium Silicon alloy
Main application: As potent deoxidizer and desulfurizer in the manufacturing of high grade steel, low carbon steel, stainless steel. Indeed, Calcium and Silicon both have a strong chemical affinity for oxygen. Especially calcium, have a strong chemical affinity not only for oxygen, but also for sulphur and nitrogen. Also been used for the modification of non-metallic inclusions. Calcium Silicon is used to control the shape, size and distribution of oxide and sulfide inclusions improving fluidity, machinability, ductility, and impact properties of the steel product. The calcium liquefies the suspended solid inclusions of aluminium oxide, a principal source of fatigue failure in highly stressed alloy steels, that are always present in aluminium killed steels (Al203 is transformed by Ca into CaO:Al2O3). Furthermore, the material properties of steel are improved: the calcium aluminates formed are largely undeformable in the solidified steel and allow high isotropy of the material properties to be maintained after working of the steel. As a sulphide former, Calcium Silicon alloy promotes random distribution of sulfides, thereby minimizing chain-type inclusions.
Chemical specification of Ferro Silicon Calcium:
Item No | Ca | Si | C | Al | P | S | O | Si+Ca |
Ca31Si60 | 31%Min | 58%-65% | 0.8 Max | 1.4%Max | 0.04%Max | 0.05%Max | 2.5%Max | 90% Min |
Ca28Si60 | 28%Min | 58%-65% | 0.8 Max | 1.4%Max | 0.04%Max | 0.05%Max | 2.5%Max | 90% Min |
Ca24Si60 | 24%Min | 58%-65% | 0.8 Max | 1.4%Max | 0.04%Max | 0.06% Max | 2.5Max | 90% Min |
Shape
In lumps :10-100mm irregular blocks or 10-80mm
Packing terms
In big plastic bag, 1.2mts per bag
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