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The VMT blog is dedicated to sharing our hard-earned knowledge in prototype manufacturing. We hope these articles will help you optimize your product designs and gain deeper insight into the world of rapid prototyping. Enjoy the read!
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2026 03 13 Maybe you are familiar with many high-strength, lightweight aerospace-grade aluminum alloys like 7050, 7075, or 2024. With so many aerospace materials available, why choose 2018 aluminum?—this forgeable and CNC-machinable metal material is widely used in defense and aerospace.
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VMT 2026 03 12 2007 aluminum offers excellent machinability and high strength after heat treatment(but it isn't very corrosion-resistant and can be quite brittle under impact), making it a perfect fit for CNC machining parts—like bolts, nuts, screws, and threaded parts—or mechanical components, automatic lathe work, and high-stress parts (static stress) in the automotive and aerospace industries. So, you might be wondering—when does 2007 aluminum actually make sense as your engineering choice for these applications?
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VMT 2026 03 11 From the exquisite ritual vessels and robust farming tools of millennia ago to the early currencies that fueled global trade, copper has defined the trajectory of early civilizations through its unique luster and ease of processing. With the dawn of the electrical age, however, this metal’s exceptional electrical and thermal conductivity quickly positioned it as a core material of global energy transmission. Today, amidst the surge of digitalization and green energy, copper’s role is more indispensable than ever. It is the lifeblood of complex circuitry, the driving force behind high-efficiency electric vehicle (EV) motors, and a critical component in solar panels. Beyond uses of pure copper, copper-based alloys—enhanced with various alloy elements to fine-tune their properties—are well-performed in mechanical engineering and structural design. In this article, you can have a comprehensive look at copper—about its key properties, prices, manufacturing, and diverse applications.
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VMT 2026 03 10 You will find that brass—or more specifically, the various types of brass—possesses unique properties: some offer high ductility, others provide superior mechanical strength, and some are engineered for marine-grade corrosion resistance. They can essentially adapt to all mainstream production methods for brass products, finding their way into everything from automotive parts and architectural decorations to various components for ocean-going vessels.
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VMT 2026 03 09 Do you want to know which "alloy" elements are used in alloy steel? How do we distinguish between high-alloy and low-alloy steels? What are the specific roles of these alloy elements? Are you looking for common alloy steel grades, their characteristics, and their applications? Furthermore, which alloy steels are better suited for CNC machining, sheet metal fabrication, or forming applications?
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VMT 2026 03 06 When you think of ferritic stainless steel, the first thing that comes to mind is likely its high cost-effectiveness, driven by its near-absence of nickel. Beyond its affordability, ferritic stainless steels offers excellent formability, thermal conductivity, and superior resistance to oxidation and corrosion. This makes it a preferred material for automotive exhaust systems, household appliances, and industrial components such as heat exchangers. In this article, you will gain an in-depth look at the chemical composition, core properties, and cost factors of ferritic stainless steel. Specific common grades and their applications will also be discussed to help you make informed decisions when balancing performance and cost in your stainless steel products.
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VMT 2026 03 05 Both 420 and 440 are martensitic stainless steels characterized by high hardness, excellent wear resistance, and good corrosion resistance. As martensitic grades, both can be strengthened through heat treatment to enhance their hardness and durability. However, their specific chemical compositions lead to distinct differences in performance—particularly in hardness and corrosion resistance—which in turn affects their cost and typical applications. Even though both 420 and 440 are widely used for precision bearings and machine components in CNC machining projects, as well as for blades and surgical instruments, they serve different needs. In this article, you can learn about how the composition of these two steels impacts their properties, compare their core characteristics, and analyze the differences in machining difficulty and cost.
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VMT 2026 03 04 This article will guide you through the core properties (properties) of 308 stainless steel and the reasons behind them. Additionally, you will learn about its cost, applications, machining , and its pros and cons.
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