Stainless steel narrow strip
1.Cold-Rolled Stainless Steel Narrow Coils: Precision at Its Core
Cold-rolled stainless steel narrow coils—commonly known in the industry as stainless steel narrow strips or steel strips—are a vital sub-category of cold-rolled coils, categorized by their specific width
Defined by the core philosophy of being “compact, ultra-thin, high-precision, and material-efficient,” these strips are engineered for the demanding world of precision manufacturing. They serve as the foundational raw material for industries where accuracy is non-negotiable, including:
·Electronics: Ensuring durability and conductivity in micro-components.
·Hardware & Tools: Providing the strength and finish required for high-end hardware.
·Medical Devices: Meeting stringent standards for hygiene and precision instruments.
2.Fundamental Definitions & Classification Standards
Stainless steel cold-rolled narrow coil, specifically refers to cold-rolled stainless steel coils with a nominal width of < 600mm, and the common specifications in the industry range are 3mm-600mm, of which 5mm-200mm is the most commonly used width range. There are two main sources of its production:
（1）Mainstream method: It is processed by stainless steel cold-rolled wide coil (≥600mm) through the longitudinal slitting process, which can be customized to specific widths according to customer needs, and has strong adaptability.
（2）Special process: Directly rolled through a special narrow band rolling mill, mostly used for high precision and special specification requirements, with relatively less output but higher accuracy.
3.Core specifications
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Parameter Category
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Specific Specifications
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Supplementary Notes
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Width Range
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3mm–600mm
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Common 5mm–200mm, customizable
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Thickness Range
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0.05mm–3.0mm
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Thinner than wide coils, high precision
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Thickness Tolerance
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Within ±0.02mm
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High precision for precision processing
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Surface Grade
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No.1,2B, No.4,BA, 6k, 8K Mirror
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High finish, few defects
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Material Options
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201, 304, 310S, 316L, 430, 410S, QN1803
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Corrosion-resistant, cost-effective, tailored grades for different applications
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4.Core Product Features
- High Precision: Extremely strict thickness and width tolerances with good dimensional uniformity, meeting the rigorous requirements of high-speed continuous stamping, automatic feeding, and micro-parts processing, reducing processing errors.
- High Material Utilization: Customizable width according to actual needs, directly usable on machines without additional cutting of wide plates, greatly reducing cutting waste and lowering enterprise production costs.
- Strong Processing Adaptability: Adjustable hardness, easy to stamp, bend, weld, stretch and form springs, suitable for various precision processing technologies, flexibly meeting different product production needs.
- Excellent Surface Quality: High surface finish with few defects, providing various surface treatment processes, which can meet both decorative needs and hygienic requirements of food, medical and other industries.
5.Common Materials (Grades) and Corresponding Applications
- 201 Stainless Steel: Cost-effective with general corrosion resistance, suitable for decorative parts, ordinary hardware accessories, low-cost tableware, etc. in dry environments.
- 304 Stainless Steel: A general-purpose corrosion-resistant material with excellent rust resistance, the most widely used grade, suitable for electronic parts, food machinery accessories, furniture decoration, precision hardware, home appliance accessories, etc.
- 316L Stainless Steel: Strong corrosion resistance, resistant to seawater and acid-base environments, suitable for medical equipment, seawater equipment, chemical accessories, high-end electronic parts, etc.
- 430 Stainless Steel (Ferritic): Magnetic, medium corrosion resistance and low cost, suitable for home appliance casings, tableware, automotive sensors, decorative strips, etc.
- 410/420 Stainless Steel (Martensitic): High hardness and wear resistance, suitable for products requiring high hardness such as blades, knives, bearings, precision springs, etc.
6.Typical Application Scenarios
- Electronic and Electrical Industry: Connector shrapnel, battery cases, shielding covers, sensor parts, micro-motor accessories, etc., requiring precise dimensions, good conductivity or corrosion resistance.
- Precision Hardware Industry: Springs, washers, clamps, buckles, bearings, micro-stamped parts, etc., relying on its high precision and good processing formability.
- Home Decoration Industry: Furniture edge banding, decorative strips, kitchenware accessories, pendants, watchbands, etc., balancing decorativeness and practicality.
- Medical Industry: Surgical blades, tweezers, precision medical equipment accessories, implants, etc., requiring hygienic surface and strong corrosion resistance.
- Automotive Industry: Sensor springs, seals, interior stamped parts, window guide accessories, etc., adapting to the production needs of automotive precision parts.
- Other Fields: Saw blades, blades, pipe blanks, welded pipe raw materials, micro-instrument accessories, etc.
