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Precision Cold-Rolled 304 Stainless Steel Strip Ideal for Automotive and Electronics Manufacturing

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JIANGSU MITTEL STEEL INDUSTRIAL LIMITED

City: wuxi

Province/State:jiangsu

Country/Region:china

Tel:86--18068357371

Contact Person:
Mr.Gao Ben View Contact Details

Precision Cold-Rolled 304 Stainless Steel Strip Ideal for Automotive and Electronics Manufacturing

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Brand Name TISCO BAOSTEEL POSCO
Model Number 201 304 309S 310S 316L 317L 321 347 410 420 430.etc
Certification ISO
Place of Origin China
Minimum Order Quantity 2 Ton
Price 1800-2000 USD/Ton
Payment Terms L/C, T/T, Western Union
Supply Ability 20Ton per week
Delivery Time 5 - 12 days based on the quantity
Packaging Details standard packing for export
Products Stainless Steel Coil
Material Stainless Steel
Thickness 0.1 - 3.0mm
Width 1000mm 1219mm 1500mm
Surface 2B NO.1 NO.4 8K
Grade 201 304 309S 310S 316L 317L 321 347 410 420 430 436 439 441 444.etc
Standard ASTM EN GB JIS
Service Cutting
Detailed Product Description
  1. Precision Cold-Rolled 304 Stainless Steel Strip – Ideal for Automotive and Electronics Manufacturing

 

Products Specification

 

Products Name:
Stainless steel Coil
Thickness:
0.1 mm - 10.0 mm
Inner Diameter
508mm
Width:
1000mm, 1219mm, customized max width 1500mm
SS Grade:
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
Coil surfaces:
2B, No.1, BA, Mirror, Hairline, No.4, PVD
Available finishes:
No.4, Hairline, Mirror, Etching, PVD Color, Embossed, Vibration, Sandblast, Combination, lamination etc.
Standard:
JIS, AISI,ASTM,GB,DIN
Packing way:
PVC+ waterproof paper + strong sea-worthy wooden package

 

Product Overview

Engineered for high-performance applications, our precision cold-rolled 304 stainless steel strip delivers the perfect balance of corrosion resistance, mechanical strength, dimensional accuracy, and surface integrity required by today’s advanced automotive and electronics industries. Made from premium AISI 304 (UNS S30400 / SUS304 / EN 1.4301), this strip is cold-rolled to tight tolerances in thicknesses ranging from 0.1 mm to 3.0 mm, with a smooth 2B surface finish and burr-free slit edges—ensuring seamless integration into automated assembly lines, stamping operations, and miniaturized components.
Whether you’re producing EV battery interconnects, sensor housings, fuel injectors, or EMI shielding, our 304 stainless steel strip provides the reliability and consistency that global OEMs demand.

Why 304 Stainless Steel for Automotive & Electronics?

Grade 304 stainless steel is the go-to material for critical components due to its:
  • Excellent corrosion resistance against road salts, coolants, cleaning agents, and atmospheric exposure
  • Non-magnetic properties (in annealed condition)—essential for sensors, relays, and electronic shielding
  • High formability and ductility, enabling complex stamping, bending, and deep-drawing without cracking
  • Good electrical conductivity relative to other stainless grades, suitable for current-carrying parts
  • Compliance with RoHS, REACH, and automotive material standards (e.g., VDA, AIAG)
Its balanced composition of 18% chromium and 8% nickel ensures long-term durability in both under-hood automotive environments and sensitive electronic enclosures.

Key Technical Specifications

ParameterSpecification
Material GradeAISI 304 / SUS304 / EN 1.4301
Processing MethodCold Rolled, Annealed, Pickled
Surface Finish2B (standard); BA or brushed available on request
Thickness Range0.1 mm – 3.0 mm
Width Range5 mm – 650 mm (precision slit-to-width)
Edge QualityBurr-free, laser-inspected, 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 ultra-thin gauges <0.3 mm)
StandardsASTM A666, JIS G4305, EN 10088-2
CertificationsISO 9001, IATF 16949 (automotive quality system), RoHS, REACH
PackagingVCI paper + PE film + steel pallet; moisture-controlled for export

Chemical Composition (Per ASTM A240)

ElementMax/Min 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 composition ensures a stable austenitic structure, minimizing sensitization during welding and maximizing resistance to pitting in chloride-containing environments.

Mechanical Properties (Annealed Condition)

PropertyTypical Value
Tensile Strength515–690 MPa
Yield Strength (0.2% offset)≥ 205 MPa
Elongation≥ 40%
Hardness70–85 HRB / 150–200 HV
Density7.93 g/cm³
Electrical Resistivity~720 nΩ·m
Thermal Conductivity16.2 W/m·K at 100°C
These properties support high-speed stamping, fine blanking, and laser cutting—critical for mass-producing micro-components in electronics and precision automotive parts.

Precision Slitting: Zero Burrs for Automated Assembly

In modern manufacturing, edge quality is as critical as material composition. Our advanced slitting technology features:
  • Tungsten-carbide tooling with micron-level alignment
  • Real-time optical edge monitoring
  • Post-slit deburring via non-contact methods (e.g., brushless magnetic finishing)
Result: No micro-burrs, no edge roll, no contamination—ensuring smooth feeding in progressive dies, robotic handling, and cleanroom-compatible production.

Applications in Automotive Manufacturing

ComponentFunctionWhy 304 Strip?
EV Battery Tabs & InterconnectsConduct current between cellsCorrosion-resistant, weldable, low contact resistance
Fuel Injector ComponentsMeter fuel deliveryResists ethanol blends and high-pressure fuels
Sensor Brackets & HousingsProtect electronic sensorsNon-magnetic, stable at -40°C to 150°C
Exhaust Heat ShieldsReduce thermal radiationOxidation-resistant up to 870°C intermittent
Gaskets & SealsEnsure fluid-tight jointsFormable, maintains seal integrity under vibration
Our strips meet IATF 16949 requirements, with full PPAP (Production Part Approval Process) support available.

Applications in Electronics Manufacturing

ComponentFunctionWhy 304 Strip?
EMI/RFI Shielding CansBlock electromagnetic interferenceNon-magnetic, solderable, thin-gauge formability
Battery Current CollectorsTransfer charge in Li-ion packsHigh purity, consistent surface for coating adhesion
Connector Springs & TerminalsProvide electrical contact forceExcellent springback, fatigue resistance
Flexible Circuit SupportsReinforce FPCs in wearablesUltra-thin (0.1–0.2 mm), flatness-critical
Housings for Medical SensorsEnclose diagnostic electronicsBiocompatible, sterilizable, aesthetically clean
For electronics, we offer cleanroom-packaged coils with particle-count certification upon request.

Quality Assurance Tailored to Industry Needs

  • Automotive: Full traceability, PPAP documentation, SPC (Statistical Process Control) data
  • Electronics: Surface cleanliness testing (per IPC-CH-65), ionic contamination reports
  • All Orders: EN 10204 3.1 Material Test Reports, spectrometry certificates, dimensional inspection logs
Every coil is tested for thickness uniformity, width consistency, and surface defects using automated vision systems before dispatch.

Ordering & Customization Options

  • MOQ: As low as 50 kg for prototyping; volume discounts for production runs
  • Custom Services:
    • Cut-to-length sheets (100 mm to 6000 mm)
    • Edge rounding or chamfering
    • One- or two-side protective film (30–100 µm PE)
    • Kitted multi-thickness sets for R&D
  • Lead Time: 7–12 days for standard sizes; 15–25 days for custom specs
  • Global Shipping: FOB, CIF, or DDP—via air, sea, or land freight
We support VMI (Vendor-Managed Inventory) and JIT delivery for Tier 1 automotive suppliers.

Frequently Asked Questions (FAQ)

Q: Can 304 stainless steel be used in high-temperature automotive exhaust systems?
A: For continuous exposure above 600°C, 321 or 409 stainless is preferred. However, 304 is excellent for heat shields and brackets near exhaust manifolds.
Q: Is your 304 strip suitable for laser welding in battery modules?
A: Yes—our low-inclusion, homogeneous microstructure ensures consistent weld penetration and minimal spatter.
Q: Do you supply material compliant with automotive IMDS or CDX reporting?
A: Yes—we provide full IMDS (International Material Data System) submissions and CDX-compliant documentation.
Q: What’s the thinnest burr-free strip you can produce?
A: We routinely supply 0.1 mm (100 µm) strips with certified burr-free edges for medical and electronics applications.

Conclusion

In the fast-evolving worlds of electric vehicles and miniaturized electronics, material performance directly impacts product reliability, safety, and efficiency. Our precision cold-rolled 304 stainless steel strip is purpose-built to meet these challenges—offering corrosion resistance, dimensional precision, and edge perfection in one high-integrity solution.
Backed by automotive-grade quality systems and deep application expertise, we partner with engineers to turn material specifications into manufacturing success.
 
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Product Tags: 304 stainless steel strip for automotive   cold-rolled stainless steel strip   precision stainless steel strip electronics  
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