Technical Articles

Gray iron or ductile iron for your casting? Compare strength, damping, cost and typical parts, plus the mistakes buyers make with grades.

Compare WCB carbon steel, CF8M stainless and duplex 2205 for valve body castings. Service limits, cost factors and buyer mistakes explained.

Every dimension on a drawing is a cost decision, most of them made before a foundry ever sees the file. Investment casting is uniquely forgiving of complex geometry — that’s why it wins over sand casting on detail and over fabrication on part consolidation — but it still obeys the physics of solidification, shell strength

1. Why investment casting is a good match for many medical device components Investment casting (lost-wax) lets a single part replace several weldments, fasteners and assemblies. For medical instruments — a retractor blade hub, a forceps hinge, a dental-handle body, an infusion-pump gear housing — that means fewer sterile-trap gaps, fewer autoclave-cycle failure points, fewer parts

Every metal casting is a story of liquid metal freezing into solid shape, and like any story, it can go off-script. Porosity, shrinkage, inclusions, cold shuts — these words appear on foundry reports and in RFQ discussions, and they carry real cost when they appear in your parts. This article is a plain-language guide to

Ask ten buyers what “good surface finish” means on a casting, and you will get ten different answers: “smooth,” “like machined,” “no pits,” “better than sand casting,” and “Ra 3.2 everywhere.” Most of those answers cost money—usually more than they need to. Surface finish is one of the most over-specified requirements in casting procurement and

Not every project needs 50,000 pieces. Equipment rebuilders need 30 replacement yokes for a legacy machine. Racing teams need 200 brackets in 4140. Machine builders testing a new design need 10 sets of housings before committing to production tooling. In these situations, the usual manufacturing menu looks unattractive: CNC machining every part from solid wastes

When engineers send us a request for quotation, one question comes up in almost every conversation: “What tolerance can you hold?” It is a reasonable question — but it is also one where a little knowledge saves a lot of money. Over-specifying tolerances on a cast part quietly inflates costs through unnecessary machining, added inspection,

In the world of precision metal component manufacturing, the debate between casting and machining is often framed as a choice between two fundamentally different processes. But the most sophisticated OEM procurement strategies don’t choose between casting and machining — they leverage near-net-shape investment casting to minimize machining while maximizing the benefits of both processes. Near-net-shape casting is

When sourcing custom metal components, OEM engineers and procurement managers face a fundamental question early in the design phase: which casting process is the right fit? The choice between investment casting (lost wax) and sand casting affects everything from dimensional accuracy and surface finish to production cost and lead time. Make the wrong choice, and you may