High Purity Graphite Crucible, 1kg/2kg/3kg Graphite Crucible(99.97% Carbon Purity), for Melting Gold Silver Copper, Jewelry Making Furnace Casting Tools
Product details
| Management number | 219192625 | Release Date | 2026/05/03 | List Price | US$12.80 | Model Number | 219192625 | ||
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Double-Ring Graphite Crucible (1kg/2kg/3kg):✅ 1kg Capacity → 0.6kg 24K Gold / 1.1kg Fine Silver / 0.8kg Copper (Precision Small Jewelry)✅ 2kg Capacity → 1.6kg 24K Gold / 2.2kg Fine Silver / 1.2kg Platinum (K-Gold & Ingot Production)✅ 3kg Capacity → 2.8kg 24K Gold / 3.5kg Fine Silver / 3kg Brass (Industrial Precious Metal Refining)🔥 Double Anti-Stick Grooves × 1800°C Corrosion Resistance × 200+ Furnace Cycles Lifespan! Core Product Features：Industrial Grooved Design：Deep-tread grooves prevent metal adhesion + enable one-handed furnace extraction.→ Reduce precious metal waste by 95% vs smooth crucibles. Grade Thermal Performance：-Withstands 5000°F (2760°C) in vacuum/gas furnaces.<0.5% thermal expansion at 1800°C → No thermal shock cracks. Ceramic-Glazed Longevity：Proprietary-coating provides 3X lifespan vs standard crucibles.→ 200+ melts guaranteed with proper maintenance. Precision Metallurgy Ready： 99.97% carbon purity → Zero contamination in gold refining. Boron nitride-ready surface for copper/platinum alloys.
- 💪【High Purity Graphite Crucible 】SIZE -- Options: 1kg, 2kg, 3kg. 1PCS graphite crucible. ideal for large-scale jewelry casting, bullion refining, & non-ferrous metal smelting.
- ✅【Industrial-Grade Grooved Design】Deeper grooves ensure secure furnace extraction & zero metal adhesion – save precious alloys & eliminate material waste during gold/silver/copper casting.
- 🔥【Ultra-High Purity Natural Graphite】99.9% Refractory-Grade Carbon delivers superior thermal conductivity (reduces melting time) + low thermal expansion (prevents cracks at 1800°C/3272°F).
- 🛡️【Glazed Anti-Corrosion Surface】Specialized ceramic coating resists slag erosion & metal oxidation, extending crucible lifespan by 3X vs standard graphite molds.
- 🌡️【Extreme-Temperature Resilience】Vacuum/Gas Furnace Ready: Withstands 5000°F (2760°C) | Electric Kiln Use: Stable at 3200°F (1760°C) – perfect for platinum melting & high-alloy casting.
| Item Weight | 1 pounds |
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| Manufacturer | Shenzhen Jianfeng e-commerce Co., LTD |
| Item model number | GANGUO-002 |
| Product Dimensions | 3.5 x 3.5 x 3.5 inches |
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