The following HS codes are affected by the new US Presidential Proclamation for steel and aluminum products exported to the USA:

Steel Articles 25% Duty 
• 7206.10 through 7216.50 – Iron and non-alloy steel ingots, flat-rolled iron/steel, bars & rods, angles & shapes of iron/steel
• 7216.99 through 7301.10 – wire
• 7302.10 – Railway rails
• 7302.40 through 7302.90 – Railway fish plates, sole plates, cross ties or iron / steel.
• 7304.10 through 7306.90  – Tubes & pipes of iron/steel

Aluminum Articles 10% Duty
• 7601 – unwrought aluminum
• 7604 – aluminum bars, rods, and profiles
• 7605 – aluminum wire
• 7606 and 7607 – aluminum plate, sheet, strip, and foil (flat rolled products)
• 7608 and 7609 – aluminum tubes and pipes and tube and pipe fitting
• 7616.99.51.60 and 7616.99.51.70 – aluminum castings and forgings