440C Stainless Steel Plate Corrosion Resistant & High Hardness for Medical and Food Grade Plastic Moulds

440C stainless plastic mould steel plate is a premium corrosion-resistant and high-hardness mould material widely used in medical, food, and chemical industries where moulds must resist rust, corrosion, and wear. This 440C stainless plastic mould steel plate contains high chromium content, providing outstanding rust resistance and hardness, which prevents mould degradation when processing acidic, corrosive, or food-contact plastics such as PP, PE, and medical-grade resins. Its high hardness also ensures long service life, reducing maintenance and replacement costs for mould manufacturers.
Our 440C stainless plastic mould steel plate is produced through vacuum induction melting (VIM) and electroslag remelting (ESR) processes, ensuring exceptional cleanliness, uniform structure, and minimal inclusions. This production method significantly improves the material’s toughness and wear resistance, making it suitable for high-load and high-cycle mould applications. The 440C stainless plastic mould steel plate is available in annealed or pre-hardened conditions, allowing customers to choose based on machining requirements. The material exhibits excellent machinability and polishing performance, supporting the production of high-gloss and precision plastic components.
Available in thicknesses from 6mm to 100mm, our 440C stainless plastic mould steel plate meets the stringent requirements of medical and food-grade moulds. We provide customized cutting, precision grinding, and passivation services to enhance corrosion resistance. For manufacturers producing medical devices, food packaging, or high-corrosion-resistance moulds, 440C stainless plastic mould steel plate is an ideal choice that ensures product safety, mould durability, and long-term operational stability.