Grade 430F is a Martensitic free-machining stainless steel based on 430 stainless steel. By adding the element sulfur, free cutting 430F steel has good machinability and small friction coefficient and has been mainly used in automatic lathe, electronic components and various pump valve compressor parts, but not recommended for high temperature and below zero use. Similar to 430, 430F is ferromagnetic, the addition of sulfur element makes 430F easier to cut with good machining performance but reduced weldability and corrosion resistance compared with 430.
Material Specifications: ASTM A582
Shape: Round bar
Finish: Turned ground & polished finish
430F Equivalent Material
JIS G 4303
DIN EN 10088
430F Comparation of Chemical Composition
430F Physical Property
Specific heat capacity [kJ/(kg·K)] 0~100℃
Thermal conductivity [W/(m·K)]
Linear expansion coefficient (10-6/K)
Longitudinal elastic modulus（kN/mm2）20℃
430F is a kind of widely used free cutting stainless steel for manufacturing large cutting automatic lathe machining parts, hydraulic accessories, fasteners, sanitary appliances, etc.
World Iron&Steel is a professional supplier of free-machining steel rods and bars. We manufacture and distribute high-quality steel 430F round bar for free-cutting application in accordance with ASTM A582 standards, specified delivery conditions and final customer specifications for industrial and commercial applications. Special sizes of steel bars and delivery issues can be further negotiated and we provide a wide range of solutions for purchasing departments to select alternative grades, contact us today!