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| Customization: | Available |
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| Type: | Steel Plate |
| Standard: | ASTM, AISI, GB, JIS, DIN, BS |
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SG700 GI is a galvanized advanced high-strength steel (AHSS) strip engineered specifically for electric vehicle battery enclosures. Combining 1500MPa-grade collision resistance with superior formability, it meets global EV safety standards (GB 38031-2020, ECE R100.02) while enabling 25% weight savings versus aluminum solutions.
Safety Compliance:
GB/T 31467.3 (Mechanical Safety) ISO 6469-1 UL 2580
Material Standards:
EN 10346 DX54D+Z / JIS G 3302 SGCC / ASTM A653 SS550
Eco-Certifications:
REACH SVHC-Free IMDS 3.0 Lifecycle Assessment (ISO 14040)
| Parameter | Value |
|---|---|
| Tensile Strength | 700-850 MPa |
| Yield Strength (Rp0.2) | 550-680 MPa |
| Elongation (A80) | ≥12% |
| Coating Mass (GI) | 80-300 g/m2 (Zinc layer) |
| Thickness Range | 0.7-2.0 mm (±0.03 mm tolerance) |
| Strip Width | 300-1,650 mm (±0.5 mm tolerance) |
| Surface Class | Surface A (Zero pinholes) |
Cell Protection: Withstands 100 kN side pole intrusion (vs. 75 kN industry baseline).
Multi-Axial Loading: Passes 200G mechanical shock test per IEC 62133.
Density Advantage: 7.85 g/cm3 vs. aluminum 2.7 g/cm3 → 40% thinner sections at equivalent stiffness.
Weight Reduction: Achieves 18 kg enclosure weight (vs. 24 kg for 6061-T6 aluminum).
Salt Spray Resistance: >1,200 hours (Red rust <5%) in cyclic corrosion test.
Galvanic Protection: Zinc layer sacrificially protects weld seams & cut edges.
Laser Welding: 4 kW fiber laser speed ≥8 m/min (N2 shielding).
Stamping Formability: r-value ≥1.2 enables 90° flanging without cracking.
| Property | SG700 GI | Aluminum 6061-T6 | Improvement |
|---|---|---|---|
| Specific Strength | 89 MPa·cm3/g | 76 MPa·cm3/g | +17% |
| Thermal Conductivity | 50 W/m·K | 167 W/m·K | Cell Temp 8ºC |
| Material Cost | $1.2/kg | $4.5/kg | -73% |
| Fire Resistance | 650ºC melting point | 580ºC melt point | +70ºC safety margin |
Structure: Bottom tray + side impact beams
Thickness: 1.5 mm (tray) / 1.8 mm (beams)
Verified Results:
Crush Distance: ≤3% deformation at 15 kN roof crush load
IP67 Sealability: Laser-welded joints pass 1 m/30 min immersion
EMI Shielding: Attenuates 90% of 100 MHz-1 GHz interference
Production: Continuous galvanizing line (CGL) with inline skin-pass
Delivery: Oiled coils on 508/610 mm ID, max. 15 MT
Eco-Profile: 40% recycled content; Carbon footprint ≤1.5 tCO2/t
Traceability: QR-coded coil heads with real-time metallurgical data
Safety First: Exceeds NHTSA 30 mph side impact requirement by 22%
Cost Efficiency: $38/enclosure savings vs. aluminum (based on 75 kWh pack)
Process Compatibility: Compatible with Tesla Gigacasting hybrid structures
Circular Economy: 100% recyclable at end-of-life
FEA Simulation: LS-DYNA crash modeling for cell-to-pack integration
Weld Monitoring: AI-driven quality control for lap joints
Prototype Tooling: Progressive die design for U-shaped crossmembers
Contact our E-Mobility Materials Team for:
1 Free sample coils 2 DFM guidelines 3 On-site welding trials
SG700 GI: Where battery safety meets uncompromised range economics.
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