Antimony Ingot 99.65%

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