440C Stainless Steel Plate High Hardness Annealed Condition 1mm-10mm Thickness
Product Spotlights
Hemaokang Steel (Shandong) Co., Ltd. proudly presents our premium 440C Stainless Steel Plate in annealed condition, available in thicknesses from 1mm to 10mm. As a newly established company with annual export value exceeding US$50 million, we leverage extensive industry experience and stringent quality control to deliver high-hardness steel plates that meet the most demanding applications. Our 440C plates offer exceptional wear resistance and corrosion resistance, making them ideal for precision components like cutting tools, bearings, and molds. With ISO9001 certification and a global customer base across North America, Europe, Asia, and beyond, we ensure reliable supply and consistent quality for your industrial needs.
Product Features & Technical Specifications
- High Hardness: Annealed condition provides a hardness range of HRC 28–32, enabling easy machining while maintaining excellent final hardenability after heat treatment (up to HRC 58–60).
- Outstanding Wear Resistance: 440C contains high carbon (0.95–1.20%) and chromium (16–18%), delivering superior resistance to abrasive wear.
- Excellent Corrosion Resistance: Suitable for moderate corrosive environments, particularly in aerospace, food processing, and medical equipment.
- Uniform Annealed Structure: Our plates undergo controlled annealing to achieve a consistent microstructure, minimizing internal stresses and improving machinability.
- Precise Thickness Control: Available in 1mm, 2mm, 3mm, 5mm, 8mm, and 10mm, with tolerances meeting ASTM A240 requirements.
- Customizable Dimensions: Width up to 2000mm, length up to 6000mm, with custom cutting and processing available upon request.
- Excellent Edge Quality: Laser-cut or sheared edges with minimal burrs, ready for further fabrication.
Technical Parameters (Typical Values)
| Property | Value |
| Carbon Content | 0.95–1.20% |
| Chromium Content | 16.0–18.0% |
| Annealed Hardness | HRC 28–32 |
| Tensile Strength (Annealed) | 720–850 MPa |
| Yield Strength (0.2% offset) | ≥ 450 MPa |
| Elongation | ≥ 10% |
| Density | 7.78 g/cm³ |
Benefits to Customers
- Reduced Machining Time: Annealed condition allows faster cutting and drilling compared to hardened steel, lowering production costs.
- Consistent Quality: Our ISO9001 quality management system ensures each plate meets strict dimensional and hardness tolerances.
- Versatile Applications: Ideal for manufacturing knife blades, ball bearings, valve seats, surgical instruments, and plastic molds.
- Global Logistics: Located in Liaocheng, Shandong, with efficient export capabilities to all major markets worldwide.
Trust & Assurance
With an annual export value of US$50 million–US$100 million and a team of 51–100 experienced professionals, Hemaokang Steel has built a reputation for reliability and excellence. Our 440C Stainless Steel Plates are shipped to customers in over 15 regions, including North America, South America, Europe, Southeast Asia, Africa, and Oceania. We provide comprehensive material test certificates and support third-party inspections. Contact us today to request a quotation or discuss your specific requirements — we are committed to delivering high-quality steel solutions at competitive prices.
Frequently Asked Questions (FAQ)
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Q: What is the typical hardness of 440C stainless steel plate in annealed condition?
A: The annealed hardness is typically HRC 28–32, which is ideal for machining. After heat treatment, it can reach up to HRC 58–60. -
Q: Can you provide custom sizes or thicknesses outside the 1mm–10mm range?
A: Yes, we offer customization for width, length, and thickness within our production capabilities. Please contact us with your specific requirements. -
Q: Is the plate suitable for food-grade applications?
A: 440C is not typically recommended for direct food contact due to its carbon content, but it is used in food processing equipment components where wear resistance is critical. For specific applications, please consult our technical team. -
Q: Do you provide material test certificates (MTC)?
A: Yes, we provide MTCs per ASTM A240 and other standards upon request. Third-party inspection is also welcome. -
Q: What is the lead time for standard orders?
A: For standard thicknesses (1mm, 2mm, 3mm, 5mm, 8mm, 10mm), lead time is typically 15–20 working days. Custom orders may require additional time. -
Q: How do you ensure the flatness and surface quality of the plates?
A: We use advanced leveling and grinding processes to ensure flatness within ASTM A240 tolerances. Surface finish options include 2B, No.1, or as specified. -
Q: Can these plates be heat treated after purchase?
A: Yes, 440C is designed for heat treatment. Annealed condition allows you to machine the part first, then harden it to achieve maximum wear resistance. -
Q: What is the minimum order quantity (MOQ)?
A: MOQ is typically 1 ton per size, but smaller quantities may be available for samples. Please contact our sales team for details.
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