Other Etchants

For cobalt and Co-Al alloys:

Adler’s reagent

For magnesium and Mg-Mn, Mg-Al, Mg-Al-Zn, Mg-Zn-Zr alloys:

Nital Etch, 2%

For pure nickel and high nickel alloys:

Marble’s reagent (aggressive)

For refractory metals:

Murakami’s reagent (Cr, Mo, Re, Ta-Mo, W, V, WC-Co, and sintered carbides)

For Ni-Ti Nitinol alloy:

ASTM 151

For T22/P22 steel replica:

Nital Etch, 5%

For T91/P91 steel replica:

Vilella’s Reagent