Ningbo Qihong Stainless Steel Co., Ltd. has been deeply involved in precision stainless steel processing and manufacturing for many years. Leveraging advanced equipment and mature processes, we offer high-quality tempered stainless steel strips, providing reliable material solutions for high-end manufacturing industries.Compared to ordinary cold-rolled 2B surfaces, bright finish stainless steel foil combines the corrosion resistance and high strength characteristics of stainless steel with an excellent appearance. The surface is free of oxidation, has low roughness, and high cleanliness, allowing for direct use without additional pickling and passivation; it utilizes mature steel grades such as 304, 301, and 430, adapting to the needs of high-end manufacturing in multiple fields.
Tempered stainless steel strip is a precision strip material produced through quenching (solution treatment) followed by medium-to-high temperature tempering (aging) processes. Compared to ordinary annealed stainless steel strips, it possesses excellent elastic limit, high strength, and dimensional stability, while retaining the inherent corrosion resistance of stainless steel. This achieves a balance of strength and flexibility, making it wear-resistant and less prone to deformation, suitable for demanding working conditions. The company precisely controls carbide precipitation and stress relief processes to produce tempered strip steel in various specifications.
EH (Extra Hard), SH (Spring Hard), TH (Tempered Hard)
Thickness Range
0.05mm - 3.0mm
Width Range
5mm - 650mm (can be slit)
Hardness Range
HV 400 - 600
Tensile Strength
1300 - 1900+ MPa
Surface Finish
2B, BA (Bright Annealed), No.3, No.4, Matt
Standards
ASTM A666, JIS G4313, GB/T 4231
The product boasts outstanding core advantages
Firstly, thorough stress relief ensures excellent elasticity and fatigue resistance, allowing for easy recovery to its original shape after stress, guaranteeing long-term stable operation of equipment, making it an ideal material for springs, shims, and other parts; Secondly, it combines high strength and high hardness with excellent wear resistance, suitable for the manufacture of blades, saw blades, and other cutting tools; Thirdly, its stable microstructure prevents warping during subsequent stamping and bending processes, improving the yield rate of precision parts; Fourthly, controlled processes ensure that corrosion resistance is not affected, resisting corrosion from the atmosphere, water, and general chemical media.
Product Applications
Thanks to its superior performance, the product has successfully replaced imported materials and is widely used in many fields: connector springs and relay springs in precision electronics; utility knife/surgical blades and saw blades in tool manufacturing; battery terminals and seat belt springs in new energy vehicles; sealing gaskets and clutch plates in industrial machinery, etc.
Why Choose qihong?
Qihong relies on its independently developed continuous tempering production line and bell-type bright tempering furnace to precisely control furnace tension and cooling rate, ensuring the flatness and uniform performance of the strip steel. Our comprehensive quality monitoring covers the entire process, including online laser thickness measurement, strip shape monitoring, and laboratory testing such as spectral analysis, tensile testing, and hardness testing for each batch. Each coil of strip steel has a unique traceable identifier to ensure controllable quality.
We offer more than just materials; we provide a full range of services: professional selection advice to help you find cost-effective solutions, targeted processing guidance to reduce customer production costs, and value-added services such as slitting and film coating. For product questions, please refer to the frequently asked questions: the tempered state offers better toughness and dimensional stability than the fully hardened state, making it more suitable for precision machining; it supports welding, with laser welding recommended; high-precision parts can undergo subsequent local tempering; 301 offers excellent elasticity and cost-effectiveness, while 304 has superior corrosion resistance, allowing you to choose according to your needs.
Qihong adheres to the core principles of "building a foundation for survival with quality, driving long-term development with reputation, and empowering value creation with efficiency," and upholds the cooperation philosophy of "mutual cooperation and shared success." We look forward to working with you to embark on a new chapter of development!
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