In sheet metal fabrication, minimum bending radius for AA 6061-0 is: 1) o 2) independent of thickness 3) same for AISI 1008 of equivalent hardness 4) likely to cause cracks inside the bend 5) independent of rolling direction Question 32 (1 point) Cold forming of metals is done at: 1) T/Tm above 0.6 2) above cryogenic temperatures 3) T/Tm just below 0.3 4) exact 120 degree F for aluminum alloys 5) between 0.3 and 0.6 for super and nickel-based alloys Question 33 (1 point) By agreement, sheet metals are defined as such: 1) when one dimension is less than 2.5 mm, and much smaller the other two 2) thin plates are thicker than 2.5 in. 3) less than 5 in. thick plates 4) produced by continuous profile rolling 5) formed in compound dies