Frangible powered iron projectiles
First Claim
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1. A process for making a lead-free, frangible, sintered firearm projectile, comprising:
- admixing powdered iron particles with at least one other type of powdered metal particles selected from the group consisting of powdered copper particles and powdered tin particles, or a mixture thereof, wherein the powdered iron particles comprise at least 70% by volume of metal particles in admixed powders;
cold compacting the admixed powders in a mold to form a projectile core; and
sintering the projectile core at a temperature of 850°
F.-1450°
F. (454°
C.-788°
C.).
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Accused Products
Abstract
Frangible projectiles for firearms and processes for making such projectiles are disclosed. The projectiles include a sintered, compacted iron-based mixture of particles. The disclosed projectiles produce a similar feel and mimic the ballistic properties of lead projectiles of similar size and caliber, yet readily break-up upon impact with a hard surface in order to minimize ricochet or splatter. The disclosed projectiles and processes for making the projectiles meet the need for inexpensive, lead-free frangible projectiles.
13 Citations
12 Claims
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1. A process for making a lead-free, frangible, sintered firearm projectile, comprising:
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admixing powdered iron particles with at least one other type of powdered metal particles selected from the group consisting of powdered copper particles and powdered tin particles, or a mixture thereof, wherein the powdered iron particles comprise at least 70% by volume of metal particles in admixed powders; cold compacting the admixed powders in a mold to form a projectile core; and sintering the projectile core at a temperature of 850°
F.-1450°
F. (454°
C.-788°
C.). - View Dependent Claims (2, 3, 4, 5, 6)
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7. A process for making a lead-free, frangible, sintered firearm projectile, comprising:
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admixing powdered iron particles with powdered copper particles, wherein the powdered iron particles and powdered copper particles are present in volumetric percentages of about 80% and about 20%, respectively; cold compacting the admixed powders in a mold to form a projectile core; and sintering the projectile core at a temperature of about 850°
F.-1450°
F. (454°
C.-788°
C.). - View Dependent Claims (8, 9, 10)
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11. A process for making a lead-free, frangible, sintered firearm projectile, comprising:
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admixing powdered iron particles with powdered copper particles and powdered tin particles, wherein the powdered iron particles, powdered copper particles, and powdered tin particles are present in volumetric percentages of about 70%, about 20%, and about 10%, respectively; cold compacting the admixed powders in a mold to form a projectile core; and sintering the projectile core at a temperature of about 850°
F.-1450°
F. (454°
C.-788°
C.). - View Dependent Claims (12)
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Specification