Jsc270d (DC03) High Ductility Cold Rolled Coil for Door Inner Panels

• Customization: Available
• Type: Steel Plate
• Standard: ASTM, AISI, GB, JIS, DIN, BS
• Model NO.: JSC270D-KF
• Certification: ISO, RoHS, IBR
• Surface Treatment: Coated
• Technique: Cold Rolled
• Application: Mold & Dies, Ship Plate, Boiler Plate, Container Plate, Flange Plate
• Special Use: Cutting Tools, Measuring Tools, Cutters in Common Steel, High-strength Steel Plate, Wear Resistant Steel, Silicon Steel
• Stock: Stock
• Elongation (A80): ≥38%
• Transport Package: Standard Export Package
• Trademark: MESCO
• Origin: China(Mainland)
• Production Capacity: 10000tons/Year

Product Description

JSC270D (DC03) High Ductility Cold Rolled Steel Coil

Precision-Engineered for Complex Automotive Interior & Fuel System Components

 

Product Overview

JSC270D is an EN 10130 DC03-equivalent cold-rolled steel coil optimized for deep drawing applications. With exceptional formability and consistent mechanical properties, it enables high-yield manufacturing of intricate geometries in door inners and fuel containment systems while reducing material waste by 15-20% versus conventional steels.

 

Certifications & Standards

• Material Standards
  EN 10130 DC03 JIS G 3141 SPCD ASTM A1008 CS Type B

• Quality Systems:
  IATF 16949 ISO 14271 (Weldability) IMDS 3.0 Compliant

• Eco-Compliance:
  REACH SVHC-Free RoHS 3

 

Key Technical Specifications

Parameter	Value
Tensile Strength	340-410 MPa
Yield Strength (Rp0.2)	180-260 MPa
Elongation (A80)	≥38%
Strain Hardening (n)	≥0.22
Plastic Anisotropy (r)	≥1.8
Thickness Range	0.5-2.0 mm (±0.03 mm tolerance)
Coil Dimensions	ID: 508/610 mm; Width: 800-1,850 mm
Surface Finish	Oiled (0.8-1.2 g/m²), Class A

 

Core Advantages for Automotive Applications

1. Superior Formability

• Deep Drawing Capability: Achieves LDR ≥2.2 (Limiting Drawing Ratio) for fuel tank domes without cracking.

• Edge Stretching: 25% higher stretch flangeability vs. DC01 grades (HEC ≥0.45).

2. Manufacturing Efficiency

• Stamping Yield: >98% success rate in complex door inner panels (60° undercut angles).

• Weld Consistency: Stable resistivity (45 nΩ·m) enables 600+ spot welds/hour at 7.2 kA.

3. Surface-Sensitive Performance

• Paint Adhesion: Ra 0.8-1.2 μm profile ensures Class A coating appearance.

• Hemming Integrity: Zero flaking in 180° tight hems for door panel edges.

 

Performance Benchmarking

Property	JSC270D	DC01 Equivalent	Improvement
Drawing Depth (Dome)	65 mm	52 mm	+25%
Springback Angle	≤0.8°	≥1.5°	↓47%
Scrap Rate	1.2%	4.5%	↓73%
Tool Wear Life	500,000 cycles	300,000 cycles	+67%

 

Application Validation

Case 1: EV Door Inner Panel (Toyota e-TNGA Platform)

• Component: Front door inner structure

• Thickness: 0.8 mm

• Results:
   Weight Reduction: 1.8 kg/door vs. 1.2 mm aluminum
   Dimensional Accuracy: ±0.15 mm after hemming
   Corrosion Resistance: Passed 120-cycle VDA 621-415 test

Case 2: Hybrid Fuel Tank (Bosch Modular System)

• Component: Asymmetric tank shell

• Thickness: 1.2 mm

• Results:
   Permeability: <0.5 g/day (CE10 fuel, 40ºC)
   Crush Resistance: Withstands 50 kN top load
   Weld Seam Integrity: 0 leaks at 35 kPa pressure test

 

Supply Chain Excellence

Process	Technology
Steelmaking	BOF → RH Degassing
Rolling	6-Stand Tandem Mill + Skin Pass
Annealing	Continuous Galvanizing Line (CGL)
Delivery	ETL inspected, VAP protected

 

Sustainability Profile

• Recycled Content: ≥30%

• Carbon Footprint: ≤1.6 tCO2/t (ISO 14064 certified)

• Circular Economy: 100% recyclable with JIS G 2401 compliance

 

Why Automotive Tier 1s Choose JSC270D?

 Door Panel Mastery: Enables 0.6 mm ultra-thin designs with 45% stiffness increase
 Fuel System Safety: Certified to SAE J30 R9 permeation standards
 Cost Leadership: Saves $14.50/vehicle vs. aluminum solutions
 Green Manufacturing: 35% lower press energy consumption

 

Technical Support Services

• Forming Simulation: AutoForm® feasibility analysis for complex draws

• Tooling Optimization: Wear-resistant coating specifications for dies

• Prototype Testing: In-house 1,500-ton servo press trials

 

Contact our Automotive Steel Team for:
1 Material samples 2 DFM guidelines 3 On-site stamping trials

*JSC270D: Where deep drawing complexity meets mass-production perfection.*

 

OUR TEAM

FAQ
1.Q: How long is your delivery time?
A: Within 7-15 days after receiving the deposit or L/C at sight. Longer lead time will be required for special designed products.
2.Q: Do you provide samples ? is it free or extra charged?
A:Surely, product sample is complimentary but the delivery fee will be covered by our customers.
3.Q:What's your payment terms?
A:Our Payment trems will be
(1) 100% T/T
(2) 30% in advance,others before shipment.
4. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
5.what can you buy from us?
Excellent quality steel at competitive prices