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TCDC Email
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Twin City Die Castings Company currently casts Aluminum and Magnesium alloys. Other alloys can be addressed by our PhD-level, staff Metallurgist. Refer to NADCA for detailed information and considerations when specifying these materials:
Aluminum, magnesium and zinc alloy data (PDF)

Aluminum (Al) die casting alloys have specific gravity of approximately 2.7 g/cc, placing them among the lightweight structural metals. The majority of die castings produced worldwide are made from aluminum alloys. Alloy 380 is by far the most widely used, offering the best combination of material properties and ease of production.

The following Aluminum alloys are standard:


Magnesium (Mg) has a specific gravity of 1.74 g/cc, making it the lightest commonly used structural metal. Alloy AZ91D offers the highest strength of the commercial magnesium die casting alloys. Alloys AM50 and AM60 are used in applications requiring good elongation, toughness, and impact resistance, combined with reasonably good strength and excellent corrosion resistance. Magnesium also offers longer die life than Aluminum.

The following Magnesium alloys are standard:


Die Casting Equipment

Refer to the following for a list of current die casting equipment, CNC machines, and inspection equipment maintained at each facility:

Minneapolis, MN | Monticello, MN | Watertown, SD

Twin City Die Castings, Inc. - Minneapolis

Minneapolis, MN

Phone: 651-645-3611
Fax: 651-645-0724
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Twin City Die Castings, Inc. - Monticello

Monticello, MN

Phone: 763-271-5060
Fax: 763-271-5070
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Twin City Die Castings, Inc. - Watertown

Watertown, SD

Phone: 605-886-9448
Fax: 605-886-2489
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