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Lathe Cut Alloy | F-400

Supplier: SDI Limited

F-400 is a 70% high strength lathe cut alloy suited for the practitioner who prefers the 'Feel' of a high quality conventional amalgam with sufficient condensation mobility to enable easy packing.


F-400's micrograins allow the establishment of strong margins without breakage and the amalgam achieves excellent physical properties.

F-400 restorations readily carve to attain a smooth dense surface and polish to a high lustre.

In excess of 50 million successful F-400 restorations have ensured that F-400 is clinically accepted as one of the world's leading conventional fine grain alloys. 

  • Uniform consistency
  • Condensation mobility allowing easy packing
  • Fine particle size resulting in a dense amalgam mass
  • Firm but smooth carving and burnishing surface
  • Strong marginal adaptation
  • Adequate but not excessive working time
  • Positive dimensional change assisting marginal sealing
  • High polishability
  • Available in a non-leak, easily activated, SDI Capsule System as Regular Set.

Physical Properties

Optimum Alloy Mercury Ratio                 1:1.1
Compressive Strength @ 30 min.           75MPa
Compressive Strength @ 60 min.           140MPa
Compressive Strength @ 24 hours         400MPa
Compressive Strength @ 7 days             480MPa
Diametral Tensile Strength @ 15 min.     4MPa
Diametral Tensile Strength @ 30 min.     9MPa
Diametral Tensile Strength @ 60 min.     17MPa
Diametral Tensile Strength @ 24 hrs.      60MPa
Static Creep @ 7 days                             2.6%
Dimensional Change @ 24 hours            +0.09%
Silver Content    70%

capsule size   alloy weight per capsule    plunger colour
1 spill               400mg                                   white
2 spill               600mg                                   blue
3 spill               800mg                                   black


CAPSULES: F-400 is available in predosed capsules for safe, convenient and accurate amalgamation. F-400 capsules are available in one, two and three spill in regular set only.

POWDER: F-400 powder is available in 30g plastic bottles in regular set only.

TABLETS: F-400 tablets are available in 150g packs in regular set only.