Silicon Carbide Graphite Crucible 890mL - High Temp Melting Tool

Our review finds the Molten Masters silicon carbide graphite crucible a practical choice for hobbyists and small foundries that need a durable melting cup. This review focuses on one clear selling point: its high-temperature resistance up to 1800C/3272F, which lets users reliably melt common metals such as aluminum, gold, silver, copper and brass without rapid degradation. For anyone using a propane furnace or a small kiln, the crucible's long life and compatibility with multiple heat sources make it a dependable workhorse rather than a single-use item.

Key Features

• High-Temperature Resistance: Handles up to 1800C/3272F so users can melt a wide range of metals safely and without premature failure.
• Wide Compatibility: Designed for Molten Masters propane furnaces but also works with kilns, natural gas furnaces, coke ovens and coal furnaces for flexible use.
• Durability: Silicon carbide graphite construction lasts two to five times longer than ordinary clay crucibles, reducing replacement frequency and downtime.
• Practical Capacity: The 890mL volume suits small batches of metal, providing a useful balance between capacity and manageable weight when handling.
• Dimensions for Fit: Outside 5.1 in diameter by 6.4 in height with inside 3.9 in diameter and 5.6 in depth, making it easy to check fit in common lab and hobby furnaces.
• Simple Maintenance Tip: Preheat the empty crucible to 500C for about 10 minutes to reduce thermal shock and extend service life.

Who It's For

The crucible is best for jewelry makers, metalcasters and small-shop users who run frequent low- to medium-volume melts and want a robust, reusable cup that copes with high temperatures. Its compatibility with multiple furnace types makes it ideal for those who switch between propane, gas, or kiln setups.

It is less suited to large commercial foundries where much larger capacities and automated handling are required, or to absolute beginners who expect a fully insulated, turnkey melting system; this is a high-performance component rather than a complete melting rig.

Pros & Cons

Pros

• High temperature rating up to 1800C/3272F for melting a broad range of metals.
• Durable silicon carbide graphite construction that outlasts ordinary clay crucibles.
• Good mid-size 890mL capacity and dimensions that fit many hobby furnaces.
• Versatile compatibility across propane furnaces, kilns and gas setups.

Cons

• Not intended for large industrial melts where greater volume and automated handling are needed.
• Requires proper preheating and handling to maximize lifespan, which adds a small procedural step.

Specifications

Brand	Molten Masters
Material	Silicon carbide graphite
Maximum Temperature	1800C / 3272F
Capacity	890mL
Outside Dimensions	5.1 in Dia. x 6.4 in Height
Inside Dimensions	3.9 in Dia. x 5.6 in Depth

Our Verdict

The Molten Masters 890mL silicon carbide graphite crucible is a solid value for hobbyists and small shops that need reliable, long-lasting performance at very high temperatures. It is especially worthwhile for users who already own a compatible propane furnace or kiln and want a durable upgrade from clay crucibles; just follow the preheat guidance to get the best lifespan.

Frequently Asked Questions

Can this crucible melt gold and silver?
Yes. With a maximum temperature of 1800C/3272F it is suitable for melting gold, silver and common non-ferrous metals.

Will it fit a standard propane furnace?
It is designed to be compatible with Molten Masters propane furnaces and fits many similar hobby propane setups, but check the outside dimensions against your furnace opening.

How should I care for the crucible to extend life?
Preheat the empty crucible to about 500C for 10 minutes before regular use and avoid rapid thermal shock to maximize the 2-5x lifespan advantage over clay.