16 years one-stop China custom CNC machining parts factory
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 04 28 As we all know, if a designed part is going to be used in high wear and abrasion environment, it couldn't’t be made of soft steel. While D2 steel is one of the famous “ hard steel” that can meet the high wear and abrasion uses perfectly—this outstanding wear-resistant, edge-retaining, and reputed as “ semi-stainless” steel is what we will dive deep into today. How this D2—cold work class of D-series tool steels— can benefit your application? How can you tell if the D2 vs A2 vs 440C vs M2 vs 4140 is suitable for your project or not? These are the common questions we often see from our client—as the professional CNC machining factory, we will help you figure these issues out and share a case how we reduce downtime with D2 CNC parts for one of our clients in the end.
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VMT 2026 04 27 As a steel with primarily 95% iron, 0.4% carbon, 1.65-2% nickel, and 0.7-0.90% chromium, you can tell 4340 steel the low alloy steel or medium carbon steel. Whatever aisi 4340 steel belongs to, its biggest value for engineering is versatile for heavy-duty industry applications such as aerospace landing gear, heavy-duty drive shafts, mining drill bits, high-strength fasteners.
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VMT 2026 04 25 Yes, brass does tarnish over time due to oxidation when exposed to air, moisture, and contaminants. However, this is a surface-level reaction and can be effectively prevented through proper surface finishing and controlled manufacturing processes.
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VMT 2026 04 22 2014 aluminum is a high-strength aerospace alloy renowned for its exceptional fatigue resistance, with the T6 temper representing its peak strength achieved through rigorous heat treatment. However, precision components—such as gyroscope brackets, sensor housings, micro-pump bodies, and heat sink assemblies—you can’t rely solely on tensile strength for the needed parts.
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VMT 2026 04 21 Proper steel alloy can decide your budget, performance of the CNC-machined parts like strength, weight, or corrosion resistance. 4140 alloy steel is one of the most versatile structural steel with excellent performance that you may now seek. High strength by heat treatment, good toughness and wear-resistance, good corrosion resistance if coated or painted for mild environment.
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VMT 2026 04 15 This article delivers a deep dive into their chemical compositions, mechanical properties, and CNC machining complexities. We will also break down the key technical differences and share a case study on how our facility successfully transforms these "difficult-to-machine" alloys into precision-engineered parts for our clients.
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VMT 2026 04 14 This blog will take you through properties of high carbon steel in depth, from composition, physical and mechanical property, cost and insights of its heat treatment, and also share how we solve difficulties that our clients face in the end.
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VMT 2026 04 13 This blog will take you through brass annealing process, equipment, advantages, and most importantly, the annealed brass CNC machining—how gummy nature of annealed brass affects CNC machining, and how we solve this challenges for our clients when ask for perfect mirror-like precision brass parts in the end.
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