Full Hard Stainless Steel Coil

Full Hard Stainless Steel Coil is a high-strength stainless steel coil produced through a multi-pass cold rolling process and stress relief treatment. Its hardness reaches HV≥370, and its tensile strength ≥1130MPa. Compared to annealed or semi-hardened stainless steel coils, it exhibits superior mechanical properties, deformation resistance, and wear resistance, while retaining the inherent corrosion resistance and high-temperature resistance of stainless steel. It requires no secondary hardening treatment and can be directly used in various high-strength, high-precision processing applications.

Automotive Industry: Full Hard Stainless Steel Coil is used in automotive trim strips, chassis components, seat springs, battery casings, etc. Its high strength and corrosion resistance improve the service life and safety of automotive parts, meeting the lightweight requirements of new energy vehicles and achieving weight reductions of over 15%, while also meeting the requirements of 800V high-voltage platforms.

Electronic Precision Manufacturing: Used in mobile phone shielding covers, electronic components, precision springs, sensor housings, etc. High dimensional accuracy and uniform hardness meet the processing needs of micro-parts, such as 0.03mm ultra-thin full hard stainless steel coils with tolerances controlled within ±0.002mm and electromagnetic shielding effectiveness ≥80dB, suitable for the semiconductor and consumer electronics fields.

Medical Industry: Used in surgical instruments, medical equipment accessories, aseptic filling equipment, etc. Made of 316L material, it complies with FDA and ISO 13485 certifications, has good biocompatibility, strong corrosion resistance, and a surface roughness Ra≤0.4μm, preventing bacterial adhesion and ensuring the safety and hygiene of medical equipment.

Industrial Manufacturing: Used for industrial furnace linings, heat exchangers, mechanical structural components, spring elements, etc. High temperature and wear resistant, it can operate stably in complex industrial environments, maintaining its strength even at 800℃. Suitable for manufacturing core components of various industrial equipment.

Food Machinery: Used for food processing equipment, kitchen utensils, aseptic containers, etc. Made of food-grade 304 fully hard stainless steel coils, it has no harmful substance leaching, is acid and alkali resistant, easy to clean, has a smooth surface, meets food industry hygiene standards, and is suitable for food filling and processing scenarios.

Henan Tieyao Trading Co., Ltd. adheres to the business philosophy of "customer-centric, market-oriented, and integrity-based development," and the service tenet of "focusing on quality, maintaining credibility, strict management, emphasizing science, and prioritizing service." By controlling costs through streamlined production processes, it can provide competitive pricing and meet the diverse needs of clients in different countries through customized solutions. Furthermore, its comprehensive pre-sales consultation and after-sales support have earned it widespread trust from clients in international cooperation.

Q1: What is the difference between Full Hard Stainless Steel Coil and semi-hard or soft stainless steel coils?

A1: The core difference lies in hardness and mechanical properties-Full Hard Stainless Steel Coil has a hardness HV≥370, tensile strength≥1130MPa, strong resistance to deformation and wear, and requires no secondary hardening. Semi-hard coils have a hardness of approximately 250-310 HV, suitable for general stamping; soft coils have a hardness ≤200 HV, good ductility, suitable for deep drawing, but lower strength; fully hard coils are more suitable for high-strength, high-precision processing scenarios, and have a longer service life.

Q2: What specifications can you customize for your fully hard stainless steel coils?

A2: Full customization is available. Materials include 301, 304, 316L, 430, etc.; thicknesses range from 0.1mm to 30mm, widths from 3mm to 2000mm, and lengths are customized as needed; surface treatments include 2B, BA, brushed, mirror finish, etc.; hardness can be adjusted according to requirements. We also support slitting, leveling, and polishing to meet the personalized needs of different industries.

Q3: How do you guarantee product quality? How are quality issues handled?

A3: All products use high-quality base materials, undergo strict production control and finished product testing, and are accompanied by material certificates, quality assurance certificates, and test reports. Third-party testing is supported. If any quality issues arise, customers can raise objections within 7 business days of receiving the goods. We will respond within 24 hours, verify the issue, and provide free returns or exchanges, while also bearing the corresponding logistics costs to protect customers' legal rights and ensure a worry-free procurement process.

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