Gold


MIL-G-45204/MIL-DTL-45204

  • 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
  • Grade D – 201+ knoop hardness

ASTM B488

  • 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
  • Grade D – 201+ knoop hardness

AMS 2422

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


Silver


QQ-S-365

  • 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

ASTM B700

  • 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

ASTM 2410

  • 950F post-bake for 20 to 60 minutes

ASTM 2411

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

ASTM 2412

  • 300F to 500F post-bake for 2 hours


Nickel

QQ-N-290 (AMS-QQ-N-290)

  • 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

ASTM B689

  • 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)

AMS 2403

  • General Purpose Nickel

AMS 2423

  • Hard Deposit Nickel

AMS 2424

  • Low Stress Deposit (Sulfamate Nickel)


Electroless Nickel

MIL-C-26074, AMS-C-26074

  • 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

ASTM B733

  • Type IV - 5% to 9% Phosphorous

Service Class

  • 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

Post Heat Treat

  • 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

AMS 2404

  • 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


Tin


MIL-T-10727

  • Type I - Electro-Plated

ASTM B545

  • Class A - 100 micro inches
  • Class B - 200 micro inches
  • Class C - 320 micro inches for copper / 400 micro inches for ferrous alloys
  • Class D - 600 micro inches for copper/800 micro inches for ferrous alloys
  • Class E - 1200 micro inches
  • Class F - 60 micro inches

AMS 2408

  • 2408-1 - 100 to 300 micro inches
  • 2408-2 - 200 to 400 micro inches
  • 2408-3 - 300 to 500 micro inches