OEM Steel Heating Recommendations for Collision Repair

Only cold straightening should be used in collision repair unless steel identification and heating guidelines are available from the vehicle manufacturer.  Unless the vehicle manufacturer specifically states otherwise, only use heat for straightening and stress relieving HSS and UHSS components when the affected components will be replaced.

The following list provides vehicle manufacturers’ recommendations for using heat in collision repair.

ManufacturerHeating Recommendation

Acura, Audi, BMW, Honda, Hyundai, Kia, Lexus, Mazda, Mercedes-Benz, Porsche, Suzuki, Toyota, Volkswagen, Volvo

Do not apply heat
Chrysler

Do not apply heat
Use of Heat During Repair
Welding Procedure Specifications

Ford

Do not heat over 650°C (1,200°F)
Do not apply heat for more than 90 seconds per application.
Do not apply more than two applications of heat.
Ford – Recommended Steel Reparability Matrix – April 2019 (08-2023)

General MotorsDo not heat over 650°C (1,200°F)
Do not apply heat for more than 90 seconds per application.
Do not apply more than two applications of heat.
Repair Recommendations for HSLA Steel
GM – Steel Descriptions and Reparability Matrix (09-2023)
Nissan & InfinitiDo not heat over 550°C (1,020°F)
Avoid using heat whenever possible
Precautions in Repairing High Strength Steel
SaabDo not heat over 650°C (1,200°F)