Material choice directly affects how well a part performs—and how long it lasts. Yet in many designs, habit overrides intent. Engineers stick with familiar alloys, even when they overshoot performance needs or add unnecessary cost.
What if there’s already a better match—one that’s more aligned with real-world operating conditions?
With side-by-side comparisons and application-specific data, a guide built for engineering decisions makes it easier to evaluate alternatives and choose with confidence. Drawing on Spuncast’s experience supporting alloy selection for centrifugal cast parts, this post shows how relevant data can challenge assumptions and lead to better-performing, more cost-effective results.
Rethinking a default alloy
So, how can manufacturers move beyond the “this is what we’ve always used” mindset and explore better options?
Consider the New Hudson Corporation. When they set out to improve the performance and cost-efficiency of the Lehr rollers used in their float glass operation, they revisited their material selection. The goal was clear: find a metal composition and process that could meet tighter specifications—without driving up cost or sacrificing reliability.
An internally developed alloy guide from Spuncast played a central role in the evaluation. By organizing alloys by physical, chemical, and mechanical properties—as well as listing similar materials and industry-standard equivalents—it made it easier to compare options and spot untapped opportunities.
“The alloy guide helps engineers used to off-the-shelf grades like 304 or 4130 see what’s possible,” says Greg Whitman, Vice President of Sales and Engineering. “It sparks new conversations by comparing alternative options.”
The process led to a practical alloy alternative that improved tubing reliability and lifespan while reducing overall material costs and lead times—a solution better aligned with the actual application demands.
Aligning an alloy with real-world applications
Building on the idea of optimizing material choices, a technically sound alloy guide doesn’t just focus on chemical composition or ASTM standards—it looks at how the metal has proven to work with the application demands of the part.
The guide should serve as a discovery tool to help engineers identify materials that answer three key questions in the design process:
- What types of stress or load will the part need to withstand?
- Will it be exposed to chemicals or specific wear mechanisms?
- Does the design call for certain mechanical properties—or even aesthetic considerations?
Once these requirements are clear, comparing alloy options becomes more intuitive. The result? A part that performs as intended, without over-engineering or overspending.
“We often hear, ‘I didn’t know that alloy was even an option,” says Whitman. “When they spot an alternative alloy side by side, it often sparks new ideas—especially knowing we can custom melt to improve properties like weldability or machinability.”
Whitman says some of the often-overlooked standout performers in their inventory include:
*High-Strength Low-Alloy (HSLA) Steel
Delivers strength, fatigue resistance, and a leaner profile—often replacing carbon steel in structural applications.
*Duplex Stainless Steels
Offering twice the strength of conventional stainless and excellent chloride resistance—ideal for marine, chemical, or industrial environments.
*Precipitation Hardening (PH) Stainless Steels
Known for high strength-to-weight ratios and corrosion resistance, PH grades like 17-4 are staples in aerospace, tooling, and energy applications.
Each of these alloys has earned its place through performance—not popularity. They’re the materials you won’t always find on the spec sheet, but once you see what they can do, they quickly become part of the discussion.
Smarter alloy choices for centrifugal casting
New Hudson Corporation is not alone in its pursuit of a more efficient material. Many manufacturers rely on more expensive materials simply because they’re the standard choice, not because they’re the best fit.
In centrifugal casting, however, engineers can explore alternatives that offer better performance and cost efficiency by leveraging the process’s unique benefits.
“Manufacturers like Caterpillar or Komatsu, who need large-diameter hydraulic cylinders for high-pressure, mildly corrosive applications, are ideal candidates for this approach,” says Greg Whitman, Vice President of Sales and Engineering at Spuncast. “By using centrifugally cast alloys, these companies achieve the right balance between performance and cost savings.”
Centrifugal casting, with its high-speed rotation and directional solidification, enhances the properties of metals—eliminating impurities and creating dense, fine-grained structures with superior mechanical performance. This process allows manufacturers to use lower-alloy materials that perform just as well, or even better, than their high-alloy counterparts.
With detailed performance data from the alloy guide, engineers can now compare the original high-alloy spec with more readily available, lower-alloy centrifugal cast metals that meet—or exceed—performance requirements. This approach leads to:
- Reduced machining time and waste
- Shorter lead times
- Lower overall material costs
It’s not just about cost savings—it’s about choosing the right material for the job, taking full advantage of what centrifugal casting has to offer.
More options, better outcomes
Defaulting to familiar materials might feel safe, but it often forces unnecessary trade-offs—whether in cost, performance, or both.
An in-depth alloy guide turns that equation around. Instead of shaping the design to fit the material, engineers can select materials that meet the design’s actual demands. The result: smarter choices, longer-lasting parts, and more efficient use of resources.
Whether you’re refining an existing spec or building something new, the ideal alloy may already exist. The key is having a tool that makes it visible.
