The best replacement for enamel is acrylic.

The best alternatives to enamel are rated as following:
★★★★★  acrylic
★★★★  lacquer
★★★  acrylic paint
★★★  latex paint
★★  latex
★★  urethane
★  paint
★  ceramic cookware
★  epoxy
★  cast iron
★  acrylic model paint
★  acrylic urethane
  porcelain
  lacquer auto paint
  dentin
  polyurethane
  oil paint
  flat paint
  urethane car paint
  powder coating
  porcelain cookware
  anodized cookware
  anodized
  powder coated
  acrylic baths
  hard anodized
  urethane enamel
  clear coat
  emulsion
  acrylic latex
  flat
  dentine
  powder coat
  base coat clear coat
  acrylic spray paint
  oil base
  basecoat clear coat
  similar
  porcelain sink
  urethane auto paint
  lacquer paints
  oil based
  lacquer paint
  cast iron dutch oven

Your alternative for enamel is not listed? Suggest!
Speaking about enamel, one probably shouldn't forget about hardener.

Other search terms related to enamel and their ratings are:
★★★★★ hardener
★ hvlp
★ fused glass
hvlp sprayer
pmc
You have in mind a companion for enamel and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of enamel in all years. Click on graph for more.
enamel
acrylic
lacquer