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Featured Products
ANTIMONY INGOT 99.65%
Antimony ingot is the refined metallic form of antimony (Sb), cast into standardized ingots for easy transport, storage, and melting.
It is produced mainly from stibnite ore (Sb₂S₃) via smelting and refining.
Typical purities:
• 99.65% Sb (Grade 2) — standard commercial quality
• 99.85% Sb (Grade 1)
• 99.90%+ Sb (High purity)
Chemical & Physical Properties
Property Typical Value
Chemical symbol Sb
Atomic number 51
Purity 99.65% min
Color Silvery-white metal, brittle, crystalline
Melting point 630.6°C
Density 6.68 g/cm³
Boiling point 1,587°C
Crystal structure Rhombohedral
Impurity elements:
As, Fe, Cu, S, Se, Pb, Bi — typically controlled in the COA.
Standard Packaging
Common antimony-ingot packaging used in the U.S., Europe, and Asia:
• 25 kg ingots
• Strapped bundles
• Or 1-ton jumbo sack containing multiple ingots
• Palletized and shrink-wrapped
• ISPM-15 heat-treated pallets required for U.S. import
Applications of Antimony Ingot
1) Flame Retardants
The largest use — antimony is used as a synergist with halogenated flame retardants.
2) Lead-Acid Batteries
Antimony is alloyed with lead to:
• Strengthen battery plates
• Improve charge retention
• Increase cycle life
3) Ammunition / Lead Alloys
Antimony is critical for hardening lead in:
• Bullets
• Shots
• Metallurgical alloys
4) Metallurgical Alloys
Used in:
• Bearing metals
• Solder
• Cable sheathing
• Sb–Sn, Sb–Cu, Sb–Pb alloys
5) Chemicals production
Feedstock for producing:
• Antimony trioxide (ATO)
• Sodium antimonate
• Antimony pentoxide
Specifications (Typical)
For 99.65% Sb ingot (commercial grade):
Element Max (%)
Sb 99.65 min
As 0.15
Pb 0.10
Fe 0.02
S 0.04
Cu 0.02
Se 0.005
Antimony alloys are alloys of antimony with other metals, such as lead and tin, that are used to increase the hardness, strength, and corrosion resistance of the base metal. Very common alloys include antimonial lead, used in lead-acid batteries, solder, and bullets, and antimony-tin alloys, which are used in bearings and pewter making. Antimony's ability to harden lead is crucial for applications like storage batteries where it improves the rigidity of the plates.
Common antimony alloys
· Antimonial lead:
An alloy of lead and antimony, which is much harder and more durable than pure lead.
· Applications: Lead-acid batteries, solder, and bullets.
· Properties: It allows molten lead to fill casting molds better, while also increasing corrosion resistance.
Used in applications where hardness, strength, and wear resistance are important.
· Applications: Bearings, type metal, and pewter.
Used to improve the properties of aluminum alloys.
· Applications: Used to enhance the strength, ductility, and machinability of the final aluminum-based product.
Other applications of antimony alloys
· Munitions:
Antimony makes lead-based ammunition stronger and harder, which improves its accuracy and effectiveness.
· Cable Sheathing:
Used to provide durability and corrosion resistance.
· Bearings:
Antimony alloys are used in plain and other types of bearings to improve their mechanical properties and reduce friction.
· Foil, sheets, and pipes:
Antimony enhances the mechanical strength and corrosion resistance of lead in these products.
Tin-Antimony plating Alloy
We can provide tin-antimony alloy plating which has the following properties:
Pb-free solder plating
Solder composited uniformly by Sn-5% Sb having a melting point of 235 degree C
Material used for soldering at multi-temperatures
Good reliability for connection strength at hot environmentPb-free Sn-Sb solders plating having uniform composition. Antimony content is 5% of plus or minus 3ï¼….
Functional property: Good Bondability and High Temperature Solder
Industry employed: Sensors
Typical applications for antimony trioxide include flame retardant synergist for use in plastics, rubber, paints, paper, textiles, and electronics; polyethylene terephthalate polymerization catalyst; a clarifying agent for glass; an opacifier for porcelain and enamel; and a white pigment for paint.
Product information
Sb2O3 (min) 99.5 % 99.8 % 99.9 %
Sb+3 (min) 83.6 % 83.8 % 83.9 %
Arsenic, As (max) 0.10 % 350 ppm 20 ppm
Lead, Pb (max) 0.10 % 425 ppm 20 ppm
Iron, Fe (max) 60 ppm 40 ppm 15 ppm
Selenium, Se (max) 30 ppm 30 ppm 10 ppm
Bismuth, Bi (max) 30 ppm
Copper, Cu (max) 30 ppm
Tin, Sn (max) 20 ppm
Sodium, Na (max) 100 ppm
Nickel, Ni (max) 30 ppm
Average Particle Size 1.6 – 3.0 μ 0.2 – 2.0 μ 2.0 – 5.0 μ
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