Crucibles, stirrers

Crucibles and equipment for optical glass production


Application: melting and stirring glass

Regulatory document: company standard STO 00195200-035-2008, for crucibles and stirrers made of dispersion-strengthened platinum alloys - company standard STO 00195200-018-2007, Technical specifications TU 1995-475-00195200-2006*

*Сrucibles can be manufactured in accordance with the customer’s drawings upon request.

Material and dimensions:

Material Volume, l   Diameter, mm   Wall thickness, mm   Height, mm (without nozzle) 
 Min  Max Min Max  MinMax  MinMax 

Pt99.9; Pt99.93; Pt99.8; PtRh95-5; PtRh93-7; PtRh90-10

Zirconium oxide stabilized alloys: Pt99DU; PtRh-10DU

Zirconium oxide stabilized alloys Pt99DU with cladding layer of platinum Pt99.9:

• B Pt99.9 + Pt99DU – one-sided cladding

• B Pt99.9 + Pt99DU + Pt99.9 – double-sided cladding


The technologies and equipment of JSC EZOCM allow manufacturing crucibles in the wide range of diameters with a minimum number of welds:

  • solid-drawn spherical bottom from a solid billet;
  • cylindrical part of the crucible with one longitudinal weld.

The advantages of such crucibles are their greater resistance to aggressive substances and longer service life.

In addition to crucibles, stirrers, drain and overflow pipes, nozzles, flanges, bellows and other devices can be manufactured upon the customer's request.

For further details, please contact us.

To place an order, kindly provide information as below: 

CategoryProductRequired informationOrder quantity
Technical productsCrucibles; other technical products

1. Alloy, contents of major alloy components;

2. Product number or product drawing.

3. Unit pricing (per 1 gram of alloy/per piece; counting per piece)

Required quantity, unit of measurement

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