HC340/590DP Dual Phase High-Strength Automotive Steel Sheet

Product Name: HC340/590DP Dual Phase High-Strength Automotive Steel Sheet
Product Positioning: Core material for lightweighting of new energy vehicle bodies.

I. Product Overview
HC340/590DP Dual Phase High-Strength Steel is a lightweight sheet steel specifically developed by Baowu Steel for new energy vehicles. Utilizing a low-carbon micro-alloy design combined with continuous annealing process, it offers a combination of high strength and good cold formability. It enables a 15%-20% reduction in body weight, contributing to an 8%-10% improvement in the driving range of new energy vehicles.

II. Core Technical Parameters

Parameter Category	Specific Indicators
Grade	HC340/590DP
Thickness Range	0.8mm – 2.0mm
Width Range	800mm – 1800mm
Yield Strength	340MPa – 480MPa
Tensile Strength	590MPa – 780MPa
Elongation	≥20%
Cold Bending Performance	180° cold bend, d=2a, crack-free
Welding Performance	Excellent spot and arc weldability; welded joint strength ≥ 90% of base metal strength

III. Product Advantages

• Significant Lightweighting Effect: Twice the strength of ordinary mild steel, allowing for reduced sheet thickness.
• Good Formability: Suitable for stamping complex-shaped body components, reducing stamping steps.
• Excellent Fatigue Resistance: Strong performance under alternating loads, extending vehicle body service life.
• Cost Advantage: Offers better cost-performance compared to aluminum alloys, making it an economical choice for body lightweighting.

IV. Application Scenarios

• Body Structural Parts: Door anti-intrusion beams, front/rear bumpers, chassis longitudinal beams.
• Body Inner Panels: Door inner panels, hood inner panels.
• Battery Pack Enclosure: Upper cover and base plate for new energy vehicle battery packs.