ACCRA® Formed-in strength. ACCRA proprietary form-blow-hardening technology is ideal for producing complex hollow-profile structures that are ultra-strong, yet lightweight. The ACCRA process: 1. Low cost raw materials Boron steel tubing is sourced or fabricated in-house, and used as-is or preformed. 2. Heating Tubes are heated until cherry red, releasing built-in stresses and enabling easy bending and blow-forming. 3. Specialized tooling The heated tubes enter a specialized forming die that shapes the tube and defines the desired blow-formed cross-sectional profile. 4. Form-blow-hardening and quenching When closed, injectors are forced into the ends of the tubes and air pressure is applied, forcing the heated steel against the tool. Water is then immediately applied, quenching the tube and converting the boron steel into martensite. 5. Post processing The cooled tubes are laser cut and finished to meet customer specifications. Multimatic produces over two million SORB tubes per year, including for the North American Ford Ranger. ACCRA is ideal for: Roof Structures Both the the Jeep Wrangler and Gladiator feature an exposed ACCRA Sport Bar — manufactured by Multimatic. Impact Beams High strength and formability makes ACCRA an ideal technology for impact beams. SORB Tubes The Ford F-150 relies on ACCRA-formed SORB tubes to mitigate Small Overlap Rigid Barrier impacts. Roof Structures The Ford Bronco’s ACCRA cant rails are both strong and attractive in support of roof-off, open-air enjoyment. Door Beams Where high strength must fit in a tight package. ACCRA structures achieve 1500+ MPa strength and are well-suited for products requiring: 1 High structural performance (comparable to hot stamping/PHS) within tight packaging constraints 2 Light weight, without the cost of exotic materials 3 Closed-section assemblies with no heat-affected zones 4 Aggressive bends, sweeps or indents with dimensional stability and accuracy over long parts 5 Variability based on profile cut length Case Study ACCRA Design Benefits: A-Pillar Balancing A-pillar vision obstruction against crash and roof-crush requirements is a major challenge in vehicle development. Read more… By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. You can change your preferences at any time by clicking on Cookie Settings at the bottom of this page. Accept All Manufacturing Engineering Vehicles Motorsports About Follow us Legal Policies & Terms Cookie Settings Cookie List © 2021 Multimatic Inc.