Silicon Carbon Alloy 65/15 for Steelmaking

 

Silicon Carbon Alloy 65/15 is a widely used metallurgical material in steelmaking. With 65% silicon and 15% carbon, it combines strong deoxidizing properties with carbon addition, making it ideal for converter steelmaking, electric arc furnaces (EAF), and foundries.

This guide explains its composition, applications, advantages, and specifications, helping steel producers optimize cost and efficiency.

 

Composition of Silicon Carbon Alloy 65/15

Component	Content (%)	Function
Silicon (Si)	65	Deoxidation of molten steel
Carbon (C)	15	Carburization, improves slag fluidity
Sulfur (S)	≤0.03	Impurity control
Phosphorus (P)	≤0.03	Impurity control
Other trace elements	≤0.1	Furnace stability

Note: Composition may vary slightly depending on furnace requirements.

 

Applications

Silicon Carbon Alloy 65/15 is suitable for:

Converter Steelmaking (BOF)

Acts as a deoxidizer and carbon source

Improves slag separation and steel quality

Electric Arc Furnace (EAF)

Fast melting and reaction

Shorter furnace time and lower energy consumption

Foundry and Specialty Steel

Adjusts chemical composition

Enhances casting quality and reduces defects

 

Advantages

Dual Function: Provides both silicon and carbon in one material

Cost-Effective: Reduces raw material and energy consumption

Efficient Reaction: Fast melting improves furnace productivity

Flexible: Available in lump, granules, or powder forms for different furnace types

Stable Quality: Low impurities ensure consistent steel quality

 

Particle Sizes

Form	Size Range	Furnace Application
Lump	10–50 mm	Converter (BOF)
Granules	1–10 mm	EAF, fast-melting operations
Powder	<1 mm	Foundry, precise alloying

 

How It Helps Reduce Steelmaking Costs

Combines Si + C → reduces the need for separate ferrosilicon and carbon sources

Faster melting and reaction → less energy and shorter furnace time

Partial replacement of ferrosilicon → lowers raw material cost

Improved steel yield → less steel lost in slag, better furnace efficiency

 

FAQ

Q1: Can Silicon Carbon Alloy 65/15 replace ferrosilicon completely?
A: In many processes, yes, especially when cost reduction is a priority. A blended approach is recommended for stable steel quality.

Q2: What sizes are available for Si-C 65/15?
A: Lump (10–50 mm), granules (1–10 mm), and powder (<1 mm).

Q3: Which steel grades can use this alloy?
A: Suitable for standard-grade steels, medium-carbon steels, and some specialty applications.

Q4: How do I order bulk supply?
A: Contact us directly for quotations, technical guidance, and shipping options.

 

Conclusion

Silicon Carbon Alloy 65/15 is a reliable, cost-effective material for modern steelmaking. Its dual function, fast reaction, and flexible specifications make it a preferred choice for steel plants aiming to:

Reduce raw material and energy costs

Improve furnace efficiency

Maintain high-quality steel production

👉 Contact us now to get a quote for bulk supply or custom specifications.