the main use of antimony is in the form of antimony trioxide is used in the making of flame-proofing compounds. markets for these flame-retardant applications include children's clothing, toys, aircraft and automobile seat covers. it is also used in the fiberglass composites industry as an additive to polyester resins for such items as light aircraft engine covers. the resin will burn while a flame is held to it but will extinguish itself as soon as the flame is removed. fireproofing consumes about half of the annual production of antimony.

[2]
lead base alloys
antimony forms a highly useful alloy with lead, increasing its hardness and mechanical strength. the sb-pb alloy is used in lead-acid batteries.[2][32] it is used in antifriction alloys, such as babbitt metal.[33] it is used as an alloy in bullets and lead shot, cable sheathing, type metal (e.g. for linotype printing machines[34]), solder – some "lead-free" solders contain 5% sb,[35] in pewter,[36] and in hardening alloys with low tin content in the manufacturing of organ pipes.

the main use of antimony is in the form of antimony trioxide is used in the making of flame-proofing compounds. markets for these flame-retardant applications include children's clothing, toys, aircraft and automobile seat covers. it is also used in the fiberglass composites industry as an additive to polyester resins for such items as light aircraft engine covers. the resin will burn while a flame is held to it but will extinguish itself as soon as the flame is removed. fireproofing consumes about half of the annual production of antimony.

[2]
lead base alloys
antimony forms a highly useful alloy with lead, increasing its hardness and mechanical strength. the sb-pb alloy is used in lead-acid batteries.[2][32] it is used in antifriction alloys, such as babbitt metal.[33] it is used as an alloy in bullets and lead shot, cable sheathing, type metal (e.g. for linotype printing machines[34]), solder – some "lead-free" solders contain 5% sb,[35] in pewter,[36] and in hardening alloys with low tin content in the manufacturing of organ pipes.