Price Comparison of Molybdenum Crucibles by Four Processes

For molybdenum crucibles, the cost ranking based on key factors (especially material utilization) is generally consistent with conventional material processing: Machining ≥ Welding ≥ Spinning ≥ Sintering.

However, since molybdenum crucibles are standard products, many ready-made market prices are available, making pricing more transparent than for custom molybdenum parts.

Below is a detailed price comparison of the four processes, combining process principles and market quotations.

products
Process	Welding Crucible	Spinning crucible	Sintering crucible	Machining crucible
Characteristics	Fabricated by welding multiple sheet metal parts; can produce large or complex shapes	Formed from a sheet by spinning; near-net-shape, high material utilization	Powder metallurgy, with or without light finishing	Turned or milled from a molybdenum rod or block; subtractive manufacturing, the largest material waste
Key Dimensions & Limitations	Theoretically, any large size; weld seams are weak points; requires high-quality vacuum welding	Ideal for thin-walled, large-diameter crucibles; typical max diameter up to 500 mm, wall thickness down to 0.3 mm	Mostly small to medium sizes; dimensional accuracy and wall thickness control are relatively limited	Ideal for small, high-precision crucibles; common range: diameter 10–100mm, height 10–200mm
Density & Compactness	Same as base metal, but the weld zone properties may be degraded	High (up to >10.15 g/cm³), close to forged level	Relatively low (≥9.8 g/cm³), possible micro-porosity	Highest (≥10.2 g/cm³), 100% dense
Typical Applications	Extra-large, complex-shaped, or non-standard crucibles difficult to form by other methods	Large, thin-walled, weight-sensitive crucibles, e.g., liners for sapphire crystal growth furnaces	Small to medium crucibles with moderate compactness requirements, e.g., laboratory use, some metallurgical containers	Crucibles requiring tight tolerances, thick walls, complex geometries, or the highest internal quality
Market Reference Price	Priced by weight: approx. ¥80 – ¥190 / kg, or $25 / piece	Approx. ¥400 / piece	Approx. ¥200 – ¥450 / piece	Approx. ¥300 / piece (small standard) or priced by weight

Cost Ranking & Summary

Considering all factors, the cost gradient is clear:

1. Most economical: Sintering
For small to medium standard crucibles with moderate density requirements, sintering is the most cost-effective. Example references: Baoji Bilong Metal ~¥200/piece; Xinkang Scientific Research D60x15mm ~¥380/piece.

2. Best value: Spinning
For large, thin-walled crucibles, spinning is the top choice. It provides high density while avoiding the waste of expensive molybdenum metal from machining. Unit prices are around ¥400.

3. Medium cost: Welding
For extra-large or complex-shaped crucibles, welding is the only low-cost solution. Pricing by weight: e.g., Jiaxin Dingsheng ~¥80/kg; Bilong Metal ~¥190/piece or $25/piece.

4. Highest cost: Machining
When dimensional precision, geometric complexity, or 100% internal density is the highest priority, machining is necessary due to its lowest material utilization. Quotations: Longji Sharp Metal ~¥300/piece and up.

How to Choose?

A simple decision path for selecting the process:

Extra-large or custom shapes → Consider Welded crucible

Large, thin-walled crucibles → Consider Spun crucible

Small, standard crucibles → Consider Sintered crucible

Highest precision and internal quality → Consider Machined crucible

I hope this gives you a clear understanding of the price and process options for molybdenum crucibles. If you have a specific size or application in mind, I can help you analyze the most suitable process.