4Cr13(H) Stainless Steel Round Bar Corrosion Resistant for Plastic Mould Ejector Pins and Medical Parts

4Cr13(H) stainless steel round bar is a martensitic stainless steel material widely used in plastic mould manufacturing, medical equipment, and food machinery parts due to its excellent corrosion resistance, moderate hardness, and good mechanical properties. This 4Cr13(H) stainless steel round bar provides reliable rust and oxidation resistance, making it particularly suitable for mould ejector pins, core pins, and sliding components that work in humid environments or contact with corrosive plastics such as PVC, PET, and chemical resins. Compared with ordinary carbon steel round bars, 4Cr13(H) stainless steel round bar effectively avoids rust and surface deterioration, extending the service life of mould components and ensuring stable production.
Our 4Cr13(H) stainless steel round bar is produced through advanced smelting and hot rolling processes, ensuring uniform internal structure, stable chemical composition, and excellent processing performance. The material can be supplied in annealed or pre-hardened conditions to meet different machining and application requirements. 4Cr13(H) stainless steel round bar features good machinability, allowing smooth turning, grinding, polishing, and EDM processing, making it easy to produce high-precision ejector pins, guide pins, and small mould inserts. After proper heat treatment, it can achieve appropriate hardness and wear resistance, balancing corrosion resistance and durability for long-term use.
Available in diameters from 4mm to 200mm, our 4Cr13(H) stainless steel round bar meets the size requirements of various mould and mechanical components. We provide customized cutting, centerless grinding, polishing, and chamfering services to achieve high dimensional accuracy and smooth surface finish. For manufacturers engaged in precision plastic moulds, medical device parts, and anti-corrosion mechanical components, 4Cr13(H) stainless steel round bar offers outstanding performance in rust resistance, processing stability, and cost efficiency, ensuring high-quality parts and reliable long-term operation.