The Effect of Cold Rolling Strain Degree in Corrosion Resistance of Fully Soft Temper Automotive 5182 Alloy

5182 is the most common 5xxx series aluminum alloyAluminum alloys for automotiveAutomotive applications. AutomotiveAutomotive manufacturers have set strict intergranular corrosionCorrosion resistance specifications for the specific alloyAlloys. The current paper presents corrosionCorrosion testing data (ASTM G67 Nitric Acid Mass Loss Test results) of 5182 alloy5182 alloy in fully soft O temper conditions produced by different cold rolling thickness reductions. CorrosionCorrosion testing is performed after low-temperatureLow temperature heat treatmentHeat treatment of O temper material (130 °C and 170 °C for soak time 17 h) to accelerate Mg precipitation along the grain boundaries. Increase of cold rolling thickness reduction before final O temper annealAnneal significantly reduces the corrosionCorrosion resistance of the alloyAlloys (increases the corrosionCorrosion test weight losses value). Fine grain size seems to reduce 5182 alloy5182 alloy O temper corrosionCorrosion resistance by increasing the corrosionCorrosion path length.