Investment Casting Products

Marketech International is the export distributor for Howmet Specialty Products group, offering Howmet's zirconia crucibles and investment casting waxes.

Zirconia MC-1204 Crucibles

Howmet uses high purity zirconia material, stabilized with magnesium oxide to produce the preferred crucible for melting nickel and cobalt-based superalloys. Crucibles are isostatic pressed from coarse-grain materials and fired at high temperatures. The end result is a crucible which exhibits extremely uniform properties and improved interparticle bonding.

Howmet's MC-1204 crucibles have such properties as:

• Resistance to erosion by molten metals - to provide long-life service
• High density - minimize metal penetration
• Low thermal conductivity
• Chemical inertness
• Minimum of non-metallic inclusions
• High temperature resistance - able to assist in vacuum melting operation over 1700^oC

Typical Chemical and Physical Properties

ZrO2 MgO Flexural Strength Porosity

94% 3% 3000 psi min 20%

Investment Casting Waxes

Howmet manufactures more than 30 standard and special application investment casting waxes. These include custom or standard gating wax formulations. Specialty waxes include dip seal, seaming, extrusion, and patching waxes, and pattern repair crayons. Contact your Marketech representative for details.