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Annealed 304 Stainless Steel Strip in Various Widths and Thicknesses Excellent Formability and Finish
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x제품 상세 정보
| 제품 | 스테인레스 스틸 코일 | 재료 | 스테인레스 스틸 |
|---|---|---|---|
| 두께 | 0.1 - 3.0 밀리미터 | 너비 | 1000 밀리미터 1219 밀리미터 1500 밀리미터 |
| 표면 | 2B NO.1 NO.4 8K | 등급 | 201 304 309S 310S 316L 317L 321 347 410 420 430 436 439 441 444.etc |
| 기준 | ASTM EN GB JIS | 서비스 | 절단 |
| 강조하다 | 304 stainless steel strip annealed,stainless steel strip excellent formability,304 steel strip various widths |
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제품 설명
Products Specification
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Products Name:
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Stainless steel Coil
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Thickness:
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0.1 mm - 10.0 mm
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Inner Diameter
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508mm
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Width:
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1000mm, 1219mm, customized max width 1500mm
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SS Grade:
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201 202 301 304 304L 309S 310S 316L 316Ti 317L 409L 410 420 436L 439 441 444
2205 2507 904L C276 600 625 825 926.etc
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Coil surfaces:
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2B, No.1, BA, Mirror, Hairline, No.4, PVD
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Available finishes:
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No.4, Hairline, Mirror, Etching, PVD Color, Embossed, Vibration, Sandblast, Combination, lamination etc.
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Standard:
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JIS, AISI,ASTM,GB,DIN
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Packing way:
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PVC+ waterproof paper + strong sea-worthy wooden package
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Annealed 304 Stainless Steel Strip in Various Widths and Thicknesses – Excellent Formability and Finish
Product Overview
Our annealed 304 stainless steel strip is precision-engineered for applications demanding superior ductility, surface quality, and dimensional consistency. Produced from high-purity AISI 304 (UNS S30400 / SUS304 / EN 1.4301) and fully annealed after cold rolling, this strip offers unmatched formability, making it ideal for deep drawing, bending, stamping, and intricate shaping processes across industries such as medical devices, consumer electronics, food processing, automotive components, and architectural trim.
Available in thicknesses from 0.1 mm to 3.0 mm and widths from 5 mm to 650 mm, our product line supports both standard and custom specifications—with a smooth 2B finish as standard and optional surface treatments available. Every coil is delivered in a soft-annealed condition, ensuring maximum workability without cracking or springback issues.
Why Choose Annealed 304 Stainless Steel Strip?
Annealing—a controlled heat treatment followed by rapid cooling—relieves internal stresses induced during cold rolling. This process:
- Maximizes elongation (>40%) and reduces hardness (70–85 HRB)
- Restores non-magnetic properties (critical for sensors and electronics)
- Enhances corrosion resistance by homogenizing the microstructure
- Improves surface uniformity and eliminates orange peel or stretcher strains
Combined with 304’s inherent 18% chromium / 8% nickel composition, the annealed strip delivers long-term reliability in corrosive, high-hygiene, or high-formability environments.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Material Grade | AISI 304 / SUS304 / EN 1.4301 |
| Condition | Fully Annealed (Soft Temper) |
| Thickness Range | 0.1 mm – 3.0 mm |
| Width Range | 5 mm – 650 mm (precision slit-to-width) |
| Surface Finish | 2B (standard); BA, No.4, or brushed on request |
| Edge Quality | Slit edge, burr-free, Ra ≤ 0.8 µm |
| Thickness Tolerance | ±0.005 mm (0.1–0.5 mm), ±0.02 mm (0.5–3.0 mm) |
| Flatness | ≤ 1.0 I-Unit (for gauges <0.3 mm) |
| Standards | ASTM A666, JIS G4305, EN 10088-2 |
| Certifications | ISO 9001, RoHS, REACH, EN 10204 3.1 MTR |
| Packaging | VCI anti-rust paper + PE film + wooden pallet (export-ready) |
Chemical Composition (Per ASTM A240)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 0.75 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 10.5 |
| Iron (Fe) | Balance |
This balanced chemistry ensures a stable austenitic structure that resists sensitization and maintains performance after forming.
Mechanical Properties (Annealed Condition)
| Property | Typical Value |
|---|---|
| Tensile Strength | 515–620 MPa |
| Yield Strength (0.2% offset) | 205–310 MPa |
| Elongation | ≥ 40% |
| Hardness | 70–85 HRB (150–180 HV) |
| Density | 7.93 g/cm³ |
| Melting Range | 1400–1450°C |
| Thermal Expansion | 17.2 µm/m·°C (20–100°C) |
These properties make the material exceptionally suited for deep-drawn parts, complex bends, and high-speed progressive die operations without requiring intermediate annealing.
Surface Finish: The 2B Advantage
The 2B finish is the most widely specified surface for industrial stainless steel due to its:
- Smooth, semi-bright, uniform appearance
- Excellent flatness and minimal surface defects
- Suitability as a base for polishing, coating, or printing
- Compliance with hygiene standards (FDA, NSF, EU 1935/2004)
Unlike abrasive finishes (e.g., No.4), 2B avoids directional grain patterns that can trap contaminants—making it ideal for medical instruments, food contact surfaces, and cleanroom components.
Optional finishes:
- BA (Bright Annealed): Mirror-like reflectivity for decorative uses
- No.4 Brushed: Linear grain for architectural panels
- Custom textures: Embossed or matte finishes upon request
Precision Slitting with Burr-Free Edges
Even in the softest temper, poor edge quality can compromise forming or assembly. Our slitting process includes:
- Laser-guided alignment for width accuracy (±0.1 mm)
- Carbide tooling with adaptive pressure control
- Post-slit inspection via high-resolution cameras
Result: Clean, smooth edges with no micro-burrs—essential for automated feeding, laser cutting, and sensitive handling in electronics or medical manufacturing.
Industry Applications
| Industry | Common Uses |
|---|---|
| Medical Devices | Surgical scalpel blades, implant housings, catheter components |
| Consumer Electronics | Smartphone frames, EMI shields, battery brackets |
| Food & Beverage | Filler nozzles, conveyor guides, mixing paddles |
| Automotive | Sensor mounts, fuel system washers, interior trim clips |
| HVAC & Appliances | Heat exchanger fins, dishwasher racks, control panels |
| Industrial | Springs, shims, spacers, filtration mesh |
The annealed condition ensures these parts can be formed into complex geometries without cracking—even at ultra-thin gauges like 0.15 mm.
Quality Assurance & Traceability
- Full heat number traceability from melt to coil
- EN 10204 3.1 Material Test Reports with every shipment
- In-house testing for chemistry (OES), tensile strength, hardness, and surface roughness
- Optional cleanliness certification (per VDA 19 or ISO 16232) for automotive customers
Our production follows ISO 9001:2015 protocols, with real-time SPC (Statistical Process Control) monitoring.
Ordering Information
- Minimum Order Quantity (MOQ): 50 kg for standard sizes; 200 kg for custom widths
- Lead Time: 7–15 days (stock items); 20–30 days for large/custom orders
- Custom Services:
- Cut-to-length sheets (100–6000 mm)
- Protective film lamination (one or both sides)
- Edge rounding or deburring enhancement
- Kitted sets for R&D or multi-part assemblies
- Global Delivery: FOB, CIF, or DDP—via air, ocean, or land freight
We support prototype sampling and JIT inventory programs for high-volume manufacturers.
Frequently Asked Questions (FAQ)
Q: What’s the difference between annealed and hard-temper 304 strip?
A: Annealed strip is soft and highly formable; hard-temper (e.g., 1/2H, H) is stronger but less ductile—used for springs or wear parts. For forming, annealed is preferred.
A: Annealed strip is soft and highly formable; hard-temper (e.g., 1/2H, H) is stronger but less ductile—used for springs or wear parts. For forming, annealed is preferred.
Q: Can I get strips with tighter flatness for laser cutting?
A: Yes—for gauges under 0.5 mm, we offer ≤0.5 I-Unit flatness using tension-leveling lines.
A: Yes—for gauges under 0.5 mm, we offer ≤0.5 I-Unit flatness using tension-leveling lines.
Q: Is annealed 304 magnetic?
A: In the fully annealed state, it is non-magnetic (<5 Gauss). Cold working may induce slight magnetism, but it remains suitable for most electronic applications.
A: In the fully annealed state, it is non-magnetic (<5 Gauss). Cold working may induce slight magnetism, but it remains suitable for most electronic applications.
Q: Do you supply material for FDA-compliant food equipment?
A: Yes—our 2B-finish 304 meets FDA 21 CFR 178.3297 and EU 1935/2004 for indirect food contact.
A: Yes—our 2B-finish 304 meets FDA 21 CFR 178.3297 and EU 1935/2004 for indirect food contact.
Conclusion
When your application demands maximum formability, corrosion resistance, and surface perfection, our annealed 304 stainless steel strip delivers consistent, high-integrity performance across thicknesses and widths. Backed by rigorous quality systems and flexible customization, we empower engineers to push design boundaries without compromising manufacturability.
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