Description

Steel, Fe 97,Mn 1.4-1.6,C 0.4-0.5,S 0.3-0.4,Bi 0.2-0.3,Si 0.2-0.3,Cu 0.1,Ni 0-0.1 is a precisely formulated alloy steel grade, identified by CAS NO 77578-37-1, engineered for applications demanding a specific balance of strength, machinability, and wear resistance. This product matters because its controlled composition of carbon, manganese, sulfur, and bismuth provides enhanced free-machining characteristics while maintaining structural integrity. It is primarily needed by manufacturers in the automotive, machinery, and fastener industries for producing high-volume, precision components like shafts, gears, and specialized fittings.

Application

• Automotive Components: Manufacture of high-strength, machinable parts such as transmission shafts, gear blanks, and engine components.
• Fastener Production: Ideal for screws, bolts, and specialized nuts requiring excellent machinability and consistent mechanical properties.
• General Machinery: Used in the fabrication of axles, spindles, and other critical machinery parts where a balance of toughness and ease of machining is essential.
• Tooling and Dies: Suitable for non-critical die components and tool holders that benefit from improved machinability.
• Industrial Valves and Fittings: Production of durable valve bodies and pipe fittings for various industrial systems.

Basic Information

Product Name	Steel, Fe 97,Mn 1.4-1.6,C 0.4-0.5,S 0.3-0.4,Bi 0.2-0.3,Si 0.2-0.3,Cu 0.1,Ni 0-0.1
CAS No.	77578-37-1
Molecular Formula	Fe (Alloy)
Molecular Weight	Contact for details
Synonyms	Free-Machining Steel; Lead-Free Machining Steel; Bismuth-Treated Steel; 12L14 Analog; Sulfurized Steel; AISI 12L14 Modified; ASTM A29; SAE 12L14; Low Carbon Free-Cutting Steel
EINECS	Contact for details

Quality Control

Our alloy steel products undergo rigorous quality testing to ensure compliance with international standards such as ASTM, SAE, and customer-specific requirements. Every batch is verified for chemical composition and key mechanical properties. Certificates of Analysis (COA) detailing composition, hardness, and microstructure are available upon request to guarantee traceability and performance consistency for your manufacturing processes.

Storage

Preserve in a dry, well-ventilated area. Store away from corrosive chemicals and environments to prevent rust and surface contamination. For long-term storage, consider using protective coatings or vapor corrosion inhibitors (VCI) packaging. Keep the material clearly labeled and segregated from other alloys to maintain grade purity.

Specification

Item	Specification
Appearance	Metallic solid (bar, rod, wire)
Iron (Fe) Content	~97% (Base)
Manganese (Mn)	1.4 - 1.6 %
Carbon (C)	0.4 - 0.5 %
Sulfur (S)	0.3 - 0.4 %
Bismuth (Bi)	0.2 - 0.3 %
Silicon (Si)	0.2 - 0.3 %
Copper (Cu)	~0.1 %
Nickel (Ni)	0 - 0.1 %
Identification (Spectroscopy)	Conforms

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.