Overview
11SMn30 is a free-cutting steel grade known for its high sulfur content, which enhances machinability. It is widely used in industries requiring precision machining, such as automotive and fastener manufacturing. The steel's sulfur inclusions act as chip breakers during machining, reducing tool wear and improving surface finish. This makes 11SMn30 a cost-effective choice for high-volume production of small components.
Physical and Chemical Properties
11SMn30 exhibits a density of approximately 7.85 g/cm³ and a melting point ranging between 1400-1500°C. Its sulfur content (typically 0.27-0.33%) significantly improves machinability. The steel's chemical composition also includes carbon (0.08-0.13%), manganese (0.80-1.10%), and phosphorus (max 0.11%). These elements contribute to its mechanical properties while maintaining good formability.
Main Applications
11SMn30 is primarily used for manufacturing precision machined parts where high productivity is essential. Common applications include screws, bolts, nuts, and other fasteners. In the automotive industry, it's often used for components like gear shift levers and small transmission parts. The steel's excellent machinability makes it suitable for CNC machining and automatic lathe operations.
Safety and Storage
When machining 11SMn30, proper ventilation is crucial due to the generation of fine metal particles. Operators should wear appropriate PPE, including safety glasses and respiratory protection. For storage, keep the material in a dry environment to prevent rust formation. If long-term storage is required, consider applying a light protective oil coating to the steel surfaces.
B2B Procurement Guide
When procuring 11SMn30, verify the material's certification, including EN 10087 compliance for free-cutting steels. Request mill test reports to confirm chemical composition and mechanical properties. Consider ordering in standard sizes (round bars, hex bars) to minimize machining waste. For large-volume purchases, negotiate pricing based on current steel market trends and consider long-term supply agreements for price stability.
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