• Type I - 99.7% minimum purity
• Type II – 99.0% minimum purity
• Type III – 99.9% minimum purity
• Grade A - 90 knoop maximum hardness
• Grade C - 130 to 200 knoop hardness
  

• Type I - 99.7% minimum purity
• Type I - 99.7% minimum purity
• Type II – 99.0% minimum purity
• Type III – 99.9% minimum purity
• Grade A - 90 knoop maximum hardness
• Grade C - 130 to 200 knoop hardness

• 99.0% minimum purity
• .000050” minimum thickness on significant surface

• Type I - Matte finish
• Type II – Semi-bright Finish
• Type III – Bright finish
• Grade A - With supplementary anti-tarnish treatment
• Grade B - Without supplemental treatment

• Type 1 - 99.9% minimum purity
• Type 2 - 99.0% minimum purity
• Type 3 - 98.0% minimum purity
• Grade A - Matte finish
• Grade B - Bright finish
• Grade C - Bright finish achieved by polishing
• Grade D - Semi-bright finish
• Class N - No supplemental anti-tarnish treatment
• Class S - With supplemental anti-tarnish treatment

• 950F post-bake for 20 to 60 minutes

• 900F post-bake for 2 hours - low alloy steel
• 1200F post-bake for 2 hours - stainless steel
• 1400F post-bake for 2 hours – inconel

• 300F to 500F post-bake for 2 hours

• Class 1 - Corrosion protection
• Class 2 - Engineering plating
• Grade A - 0.0016 inch minimum thickness
• Grade B - 0.0012 inch minimum thickness
• Grade C - 0.0010 inch minimum thickness
• Grade D - 0.0008 inch minimum thickness
• Grade E - 0.0006 inch minimum thickness
• Grade F - 0.0004 inch minimum thickness
• Grade G - 0.0002 inch minimum thickness

• Type 1 - No additives
• Type 2 - Additives allowed
• Type 3 - SIC, WC or AlO added
• Class 5 - 0.0002 inch minimum
• Class 25 - 0.0010 inch minimum
• Class 50 - 0.0020 inch minimum
• Class 100 - 0.0040 inch minimum
• Class 200 - 0.0080 inch minimum
• Class X - X is specified (X is thickness of Nickel measured in Microns)

• General Purpose Nickel

• Hard Deposit Nickel

• Low Stress Deposit (Sulfamate Nickel)

• Grade A - 0.001 inch thickness minimum
• Grade B - 0.0005 inch thickness minimum
• Grade C - 0.0015 inch thickness minimum
• Class 1 - As deposited, no post bake
• Class 2 - Post bake 500F for 4 hours minimum – Steel
• Class 3 - Post bake 375F for 1 to 1.5 hours – aluminum
• Class 4 - post bake 250F for 1 to 1.5 hours – aluminum

• Type IV - 5% to 9% Phosphorous

• SC0 - 4 micro inch minimum
• SC1 - 0.0002 inch minimum
• SC2 - 0.0005 inch minimum
• SC3 - 0.0010 inch minimum
• SC4 - 0.0030 inch minimum

• Class 1 - As Deposited – No Heat Treat
• Class 2 - 500F Heat Treat for 20 hours - Steel
• Class 3 - 375F Heat Treat for 2 to 4 hours - Steel
• Class 4 - 250F Heat Treat for 1 hour - Aluminum
• Class 5 - 295F Heat Treat for 1 hour - Aluminum and Copper
• Class 6 - 590F Heat Treat for 1 hour - Titaniun

• Class 1 - No Heat Treat
• Class 2 - 450F Post-Bake for 4 Hours Minimum - Steel
• Class 3 - 375F Post-Bake for 1 to 1.5 Hours - Aluminum
• Class 4 - 250F Post-Bake for 1 to 1.5 Hours - Aluminum

MIL-T-10727

ASTM B545

AMS 2408