Silicon Metal 421 Lump

 

Silicon Metal 421 Lump refers to a grade of silicon metal with approximately 99.2% silicon content, and maximum impurity levels of 0.4% iron, 0.2% aluminum, and 0.1% calcium, produced in irregularly shaped, silvery-gray to dark-gray chunks (lumps) with a metallic luster. This industrial silicon is used in metallurgy as an additive for steel and aluminum alloys, and serves as a raw material for high-purity silicon extraction for the electronics and semiconductor industries.

 

 

 

Alloying agent (hardener) in iron and aluminum, the production of silicones, an addition to ceramics, welding rods, powder metallurgy, pyrotechnics, ammunition, ordnance, refractories, electronic substrates, cement, vapor deposition, plasma spray, chemical formulations, and grinding wheels. Silicon metal is important to the electronic industry, as it is the base material used in the manufacture of high purity polycrystalline silicon. These products are used in the manufacture of semiconductors, microchips for computers and solar cells used to capture electrical energy from the sun.

 

The main purpose of the silicon metal is the additive as a non-iron-base alloy. The content of silicon in the earth crust is 27.7%, the second largest element in earth curst, the most abundant element in the earth crust – oxygen and silicon – combine to silica SiO2, accounting for 87% of the total mass of the crust. Silicon is a nonmetallic element, gray, metallic color, hard and brittle. Atomic weight 28.80; density is 2.33g/m3; melting point is 1410℃; boiling point is 2355℃; resistivity was 2140Ω.m. Semiconductor silicon, which use for production of semiconductor device, is a high purity silicon metal, with polycrystalline and monocrystalline form.

 

 

 

 

 

 

Henan Tieyao Trading Co., Ltd. 

1. Over 20 years of experience in refractory production and export in China.

2. We offer a full range of shaped and unshaped refractory products, including high-alumina bricks, corundum bricks, siliceous bricks, insulation bricks, insulation dense castables, ramming materials, ceramic fiber products, raw materials, and ferrosilicon alloys.

3. We have advanced logistics systems and warehousing facilities, as well as a strong and friendly marketing team.

 

 

 

 

Q1: How does your factory conduct quality control?

A1: Inspection and traceability. We strictly control the quality from raw materials to finished flanges, ensuring 100% product quality.

Q2: How do you maintain high quality while maintaining competitive prices?

A2: 1. We are willing to accept third-party inspections such as CCLC, SGs, and BV. Rest assured, we look forward to working with you.

2. All products meet standards, and we can provide quality certificates.

3. We ensure high quality while maintaining competitive prices, providing only the highest quality products to establish a good cooperative relationship with every customer.

Q3: Can I follow the progress of my product without visiting your company in person?

A3: We will provide a detailed production plan and send a report with digital photos and videos to demonstrate the processing progress.

 

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