... auger header assembly Surface :Oil Machined and turned SGS audited More than 20 years experience 1,Name:Alloy steel finger for auger ... do ?(1), Ability for the material of this kind of finger: Grade3.6,4.6,4.8,5.6,6.8 ... ,C17200,etcAlumimum100,5052,6061,6063,etc(2),Ability for the surface finish: ElectroplateZinc plated(while,colour,dacroment),Nickel plated,copper plated,gold ...