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301 Stainless Steel Strip 0.15-2.0mm BA Cold Rolled Spring Band
| Place of Origin | China |
|---|---|
| Brand Name | TISCO |
| Certification | ISO |
| Model Number | 301 |
| Minimum Order Quantity | 2 Ton |
| Price | 2000-3000 USD/Ton |
| Packaging Details | standard packing for export |
| Delivery Time | 5 - 12 days based on the quantity |
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | 20Ton per week |
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xProduct Details
| Products | Stainless Steel Strip | Thickness | 0.15 - 2.0mm |
|---|---|---|---|
| Width | Within 1219mm | MOQ | 500 Kgs |
| Grade | 200 Series 300 Series 300 Series | Surface | BA 2B NO.4 HL 8K NO.1 |
| Standard | ASTM EN GB JIS | Packing | Wooden Frame And Water Proof Paper |
| Highlight | 301 stainless steel strip,cold rolled spring band,BA stainless steel strip |
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Product Description
Precision Stainless Steel Strips Bright Annealing SS Strips Alloy 301 Cold Rolled Spring Band
Product Attributes
| Attribute | Value |
| Products | 301 stainless steel strip |
| Thickness | 0.15-2.0mm |
| Width | within 1219mm |
| MOQ | 500 kgs |
| Other | 201 301 304 304L 309S 310S 316L 316Ti 410 420 430 436 439 441 444 440A/B/C,2205,2507,904L,C276,400,600,625,926,825.etc |
| Surface | BA 2B NO.4 HL 8K NO.1 |
| Standard | ASTM EN GB JIS |
| Packing | wooden frame and water proof paper |
1. Introduction
Alloy 301 Bright Annealed (BA) Precision Strips are ultra-thin, cold-rolled stainless steel strips engineered for high-performance spring applications. Combining precision dimensional tolerances (typically ±0.01mm), mirror-like bright annealing surfaces (Ra ≤ 0.15μm), and tailored mechanical properties, these strips excel in demanding dynamic components. The cold-rolling and bright annealing processes enhance fatigue resistance, elasticity, and corrosion resilience while eliminating surface oxidation. Ideal for springs, contacts, and snap-action parts in aerospace, medical devices, and microelectronics.
2. Key Features
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Bright Annealed (BA) Finish: Oxygen-free annealing in H₂/N₂ atmosphere yields a reflective, oxide-free surface for superior aesthetics and corrosion resistance.
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Precision Thickness: 0.03–1.0mm (common: 0.05, 0.1, 0.2, 0.3mm) with tolerance to ±0.005mm.
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Cold-Rolled Hardness: Customizable from Soft Annealed (HV 150–200) to Extra Hard (HV 450–520) via work hardening.
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Spring-Centric Design: Optimized for high yield strength (up to 1,400 MPa) and elastic recovery.
3. Chemical Composition (%)
| C | Si | Mn | Cr | Ni | P | S |
|---|---|---|---|---|---|---|
| ≤0.15 | ≤1.0 | ≤2.0 | 16–18 | 6–8 | ≤0.045 | ≤0.03 |
4. Mechanical Properties
| Grade | Tensile (MPa) | Yield (MPa) | Elongation (%) | Hardness (HV) |
|---|---|---|---|---|
| 1/2 Hard | 900–1,200 | 700–1,000 | 15–25 | 320–380 |
| Full Hard | 1,000–1,400 | 900–1,200 | 8–15 | 380–420 |
| Extra Hard | 1,400–1,600 | 1,200–1,400 | 5–10 | 450–520 |
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Spring Critical Properties:
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Fatigue limit: >600 MPa (10⁷ cycles)
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Elastic modulus: 193 GPa
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Residual stress minimized via BA process.
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5. Manufacturing & Specifications
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Cold Rolling: Achieves uniform grain structure for consistent springback.
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Bright Annealing: Continuous furnace at 1,010–1,120°C in reducing atmosphere.
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Dimensions:
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Thickness: 0.05–0.5mm (±0.005mm)
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Width: 0.5–250mm (±0.05mm)
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Surface: BA (No. 8 mirror), edge condition: laser-cut/deburred.
6. Standards & Equivalents
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Standards: ASTM A666 (Spring Grade), EN 10151 (Strip), AMS 5518 (Aerospace).
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Global Equivalents:
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EN 1.4310 (Europe)
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JIS SUS 301 (Japan)
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GB 12Cr17Ni7 (China)
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7. Applications
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Precision Springs: Battery contacts, watch springs, relay blades (0.1–0.3mm strips).
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Medical: Surgical tooling, endoscopic springs, implantable device components.
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Electronics: MEMS actuators, connector clips, RF shielding.
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Automotive: Seatbelt retractors, fuel injector shims.
8. Quality & Packaging
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Certifications: ISO 9001, RoHS, REACH, mill test reports (chemical/mechanical).
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Packaging: VCI-coated rolls on plastic cores, sealed in moisture-barrier film.
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Special Handling: Cleanroom packing for medical/electronic grades.
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