11SMn30
11SMn30 is a free-cutting non-alloy steel with added sulfur (~0.27–0.33%) to improve machinability. It offers very good machinability, making it ideal for high-volume production of turned parts, screws, and fittings. However, due to higher sulfur content, its weldability and toughness are limited.
At GD Prototyping, we supply 11SMn30 free-cutting steel, a non-alloy steel specifically engineered for outstanding machinability. With a sulfur content of around 0.27–0.33%, 11SMn30 offers significantly reduced cutting forces, longer tool life, and faster machining speeds. This makes it a preferred choice for industries focused on cost-efficient, large-scale production of precision components. The steel’s optimized machinability enables manufacturers to achieve tighter tolerances, smoother finishes, and higher productivity, particularly in automated machining systems.
However, the higher sulfur content that enhances machinability also reduces weldability and overall toughness. For this reason, 11SMn30 is best suited for applications where high machinability is the priority, and structural strength or heavy-duty performance is not the main requirement. At GD Prototyping, we ensure that every batch of 11SMn30 steel we deliver meets strict quality standards, helping our clients maintain consistent production efficiency and superior results.
Applications
- High-volume production of precision turned parts
- Automotive fittings and connectors
- Fasteners, bolts, and nuts
- Hydraulic and pneumatic components
- Screws and threaded rods
- Electrical and mechanical connectors
- Machined bushings and pins
- Small machine parts requiring tight tolerances
- Components for automated CNC machining lines
Key Benefits of 11SMn30 (Free-Cutting Steel)
- Exceptional machinability – sulfur addition ensures fast, efficient cutting with reduced tool wear.
- Ideal for high-volume production – enables faster cycle times and cost savings in mass manufacturing.
- Smooth surface finish – delivers cleaner, more precise parts with minimal post-processing.
- Longer tool life – reduces downtime and tool replacement costs.
- Excellent chip formation – prevents tool clogging and ensures consistent machining performance.
- High dimensional accuracy – supports tight tolerances for precision components.
- Reliable performance in CNC machining – perfect for automated production lines.
- Cost-effective material choice – balances quality with production efficiency.
- Versatile use across industries – trusted for automotive, mechanical, and industrial applications.
