Effectively the annealing was made to uniformize the material and have lower differences in mechanical properties along the coil before stamping.
The residual content is the one below, it is higher in the case of material 1, so the pinning effect should be higher, isn´t it?
Material 1: Ni=0.018...
Fist of all thank you very much.
Yes, we checked grain size after 700ºC heat treatment and in both cases grain size was 7-8. The hot rolling supplier and final thickness were the same in both cases, so I suppose the reductions and finishing and coiling temperatures were similar in both cases...
Hello everybody,
I´ve been experincing a problema with a low carbon Steel. Two materials with similar chemical composition and subjected to the same process show very different behaviour.
Chemical composition: Material 1: C=0.018; Mn=0.17 residual:content low. Al-killed=0.040...
