HC550 980DP EL Dual Phase Steel for Machinery Auto Parts

Technical Specifications and Performance Matrix

We provide not just raw materials, but precision component substrates meeting stringent industrial standards.

Core Application Scenarios

With its high yield strength, HC650/980DP mainly addresses two core demands: heavy load and safety.
Automotive chassis and suspension systems: Used in suspension control arms, steering knuckles, and other components. HC650/980DP substantially reduces unsprung mass, improves vehicle handling, and withstands high-frequency impact loads from road surfaces.
Heavy machinery structural parts: Suitable for booms and connectors of excavators, cranes, and other equipment. Under harsh field conditions, its high fatigue strength effectively prevents cracking and extends service life.
Automotive passive safety systems: As the key material for bumper reinforcement beams and door anti-intrusion beams, it absorbs and transfers impact energy through high-strength support within milliseconds of a collision, protecting the integrity of the passenger compartment.

Frequently Asked Questions

Q: What does a 650 MPa yield strength mean? A: It means the material can withstand a pressure of 650 megapascals per square meter before permanent deformation. Compared with conventional steel, it supports heavier loads or can be made thinner and lighter at the same load level.
Q: Is 980 MPa steel at 0.3 mm thickness difficult to form? A: Despite its ultra-high strength, dual-phase steel offers good cold formability. However, due to relatively high springback, we recommend adding springback compensation in die design. We can provide a technical proposal to assist you in optimizing the process.
Q: Is this material suitable for welding? A: Yes, it is highly weldable. HC650/980DP has excellent welding performance and is suitable for spot welding, seam welding, and gas-shielded welding. Welded joint strength typically reaches over 90% of the base metal.