Well there are a very less number of brands focussed dedicatedly on metallurgy but test urself is a brand which dedicatedly works for the preparation of test series. Moreover the founder of test urself is not some random management guy rather he himself is a metallurgist who whenever gave GATE exam got ranked under AIR 30 everytime. So he can understand the problems that a student can face and the future probable questions for GATE metallurgy. These all words are just to make you believe that test urself is run by a group of people who themselves has excelled in GATE exam and metallurgy field. So you can opt for test urself mock tests blindfolded. But dont just rely only on test urself. Self teaching is very important if you really want to get AIR under 50. Study urself and then take Test urself. It will definitely act as a catalyst.

All the best.