Avon Metals handles the following forms of Silicon: - Silicon Metal Lumps - 441, 553, 2202, 3303 Grades Silicon Metal Powder - in a range of purities and mesh sizes (including AlSi powders) Aluminium-Silicon Master Alloys - 10%, 12%, 20%, 22%, 30%, 50% Si content Silicon Scrap - solar grade Silicon lumps, wafers