Zinc & Zamak Ingots
Special High Grade zinc and Zamak 3, Zamak 5, Zamak 2 and ZA-8 ingots for die casting and galvanizing. Made in Jamnagar.
High-Purity Zinc and Zamak ingots
Special High Grade (SHG) zinc, 99.995% minimum, and Zamak 3, Zamak 5, Zamak 2 and ZA-8 ingots for pressure die casting, hot-dip galvanizing and hardware.
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Indian standards: IS 209 (zinc), IS 713 (zinc alloy ingots)
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European standards: EN 1774 (ZP0400, ZP0410, ZP0430), EN 1179 (primary zinc)
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American standards: ASTM B240 (ingots), ASTM B6 (zinc), ASTM B86 (die castings)
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Form: notch-bar ingots, 10 to 15 kg, and continuous slabs, 20 to 25 kg
Manufacturing Process
Four controlled steps from raw material to ingot.
SHG raw material
LME-registered Special High Grade zinc, 99.995% minimum, is the base metal.
Controlled electric melting
Low-frequency induction furnaces with tight temperature control limit zinc loss and oxidation.
Alloying and spectro test
Aluminium, magnesium and copper are added. A spectrometer keeps lead, cadmium and tin within limits.
Water-cooled casting
Filtered alloy is poured into water-cooled moulds to give clean, low-dross ingots strapped in 1 tonne bundles.
Technical Specifications & Data Sheets
Comprehensive chemical composition limits, physical constants, and mechanical properties of Pure Zinc and Zamak Alloys.
1. Chemical Composition Analysis
| Alloy | Al | Mg | Cu | Fe max | Pb max | Cd max | Sn max |
|---|---|---|---|---|---|---|---|
| SHG zinc (IS 209, ASTM B6): Zn 99.995 min | None | None | None | 0.003 | 0.003 | 0.003 | 0.001 |
| Zamak 3 (AG40A) | 3.9 to 4.3 | 0.03 to 0.06 | 0.10 max | 0.035 | 0.004 | 0.003 | 0.0015 |
| Zamak 5 (AC41A) | 3.9 to 4.3 | 0.03 to 0.06 | 0.7 to 1.1 | 0.035 | 0.004 | 0.003 | 0.0015 |
| Zamak 2 (AC43A) | 3.9 to 4.3 | 0.025 to 0.05 | 2.7 to 3.3 | 0.035 | 0.004 | 0.003 | 0.0015 |
| ZA-8 | 8.2 to 8.8 | 0.02 to 0.03 | 0.9 to 1.3 | 0.035 | 0.005 | 0.005 | 0.002 |
2. Typical Mechanical Properties
| Property | Zamak 3 | Zamak 5 | ZA-8 |
|---|---|---|---|
| Tensile strength (MPa) | 280 | 330 | 370 |
| Yield strength (MPa) | 200 | 250 | 290 |
| Elongation (% in 50 mm) | 10 | 7 | 6 to 10 |
| Brinell hardness (HB) | 82 | 91 | 100 |
| Melting range (°C) | 381 to 387 | 380 to 386 | 375 to 404 |
| Density (g/cm³) | 6.60 | 6.70 | 6.30 |
3. Packaging and Ingot Dimensions
| Ingot type | Weight | Size (L × W × H) | Bundle weight | Packaging |
|---|---|---|---|---|
| Notched bar ingot | 10 to 15 kg | 450 × 90 × 60 mm | 1000 kg (1 tonne) | Steel strapped, palletized |
| Continuous slab | 20 to 25 kg | 500 × 100 × 75 mm | 1000 to 1050 kg | Plastic wrap and heavy straps |
Where it is used
Key downstream manufacturing sectors reliant on pure zinc and Zamak alloys.
Precision die casting
Zamak 3 is the standard alloy for high-speed hot-chamber die casting of thin-walled parts with stable dimensions.
Automotive hardware and locks
Zamak 5 is stronger and harder, for door handles, lock parts, wipers and fuel pump parts.
Hot-dip galvanizing
SHG zinc is melted to galvanize steel pipes, towers, fasteners and sheet metal against corrosion.
Door and cabinet hardware
Decorative door handles, hinges, window fittings, mortise locks and bathroom accessories.
Zippers and garment accessories
Zipper sliders, belt buckles, rivets and footwear trims with a smooth finish.
Electrical and electronics housings
Shield boxes, connector shells, switchgear handles and heat-dissipating enclosures.