{"id":546,"date":"2026-10-09T08:11:20","date_gmt":"2026-10-09T00:11:20","guid":{"rendered":"http:\/\/www.comparepowersaws.com\/blog\/?p=546"},"modified":"2026-10-09T08:11:20","modified_gmt":"2026-10-09T00:11:20","slug":"what-are-the-characteristics-of-stamping-metal-parts-made-of-aluminum-4da7-87e9f2","status":"publish","type":"post","link":"http:\/\/www.comparepowersaws.com\/blog\/2026\/10\/09\/what-are-the-characteristics-of-stamping-metal-parts-made-of-aluminum-4da7-87e9f2\/","title":{"rendered":"What are the characteristics of stamping metal parts made of aluminum?"},"content":{"rendered":"

Hey everyone, and welcome back to my little corner of the stamping metal parts world. I\u2019m Jake, and I\u2019ve been running our stamping metal parts shop for almost 12 years now\u2014man, does time fly. We work with all kinds of metals, but aluminum? That\u2019s our bread and butter. Every time a client calls asking for a lightweight, corrosion-resistant part that doesn\u2019t skimp on strength, we almost always start with aluminum. Today I want to break down what makes stamped aluminum parts so unique, why we choose them for so many jobs, and a few things that new folks in manufacturing often mix up when they\u2019re first working with this material. Stamping Metal Parts<\/a><\/p>\n

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First off, let\u2019s get one thing straight: aluminum isn\u2019t just lighter than steel. It\u2019s way lighter\u2014like, about a third the weight of mild steel, same volume. But that\u2019s not just a fun fact for engineers; that\u2019s game-changing for clients in automotive, aerospace, consumer electronics, and even outdoor equipment. Last year we landed a big contract with a electric bike company, and they told us that switching their frame brackets from steel to aluminum cut the overall bike weight by 2.7 pounds. For riders, that\u2019s the difference between hauling your bike up a flight of stairs or tossing it in the back of your car without breaking a sweat. I\u2019ve seen so many small design teams come in here thinking \u201clightweight\u201d just means using less material, but stamped aluminum lets you keep the part\u2019s strength while ditching the bulk. That\u2019s where the stamping process really shines too\u2014we can punch, bend, and form aluminum into tight, precise shapes without cracking it, which is way harder with some other light metals.<\/p>\n

Corrosion resistance is another big one that people don\u2019t always talk about enough. Aluminum naturally forms a super thin, hard oxide layer on its surface as soon as it\u2019s exposed to air. That layer seals the metal underneath, so it doesn\u2019t rust like steel does. Rust is the death of a lot of metal parts, right? If you make a steel bracket for a patio chair and leave it outside, within a few seasons it\u2019s pitted, flaking, and ready to break. But an aluminum stamped part? We\u2019ve got old parts from jobs we did in 2015 that are still sitting outside on a marina dock, and they look almost the same as the day we finished them. That\u2019s why so of our outdoor gear clients\u2014think kayak manufacturers and RV component makers\u2014swear by aluminum. The only time that oxide layer is an issue is if you need to weld it later, but since we\u2019re stamping it here at the shop, we usually coat it with a quick anodize or powder coat after forming, which adds even more protection and can color it too. Win-win.<\/p>\n

Wait, but let\u2019s be real\u2014aluminum isn\u2019t perfect, especially when you\u2019re stamping it. One of the most common mistakes new operators make is thinking \u201cit\u2019s soft, so it\u2019ll form easily.\u201d No way. The specific alloy matters way more here. We work with like 10 different aluminum alloys, and 6061 is our go-to for most jobs\u2014it\u2019s strong enough, forms well, and doesn\u2019t cost a fortune. But 3003 aluminum is softer, better for deep drawing parts like kitchen appliance housings, while 7075 is super strong but way trickier to stamp because it\u2019s more prone to cracking when you bend it sharp. Last quarter we had a aerospace client come in with a part they tried stamping themselves using 6061, and it split at the corners during the bend. Turns out they grabbed the wrong alloy, and we had to rework the whole run with 7075 (and adjust our stamping parameters to slow down the press just a little). That\u2019s the thing about aluminum: its work hardening rate is way higher than steel. So if you bend a part and then bend it again at the same spot, it gets harder and harder until it breaks. We have to adjust our stamping sequence for every job\u2014sometimes we do a light pre-form, then a anneal step (quick heat up to soften it) to keep it formable before the final shape. People who\u2019ve only worked with steel usually forget that, and they end up with a pile of scrap parts.<\/p>\n

Another characteristic that\u2019s huge for stamped aluminum parts is their surface finish. Aluminum takes coatings and finishes really well\u2014way better than most other metals. We can do a matte, glossy, or textured powder coat, anodize it to get that scratch-resistant, colorfast finish, even polish it to a mirror shine for decorative parts like phone casings. That\u2019s why so of our consumer electronics clients come to us\u2014they don\u2019t just need a part that works; it has to look good on a shelf. Last year we did a run of laptop hinges for a big tech brand, and the aluminum finish had to match the device\u2019s matte silver back exactly. If we\u2019d used steel, even with a fancy coating, it would\u2019ve been heavier, more likely to scratch, and the color wouldn\u2019t hold up as long. Aluminum\u2019s surface is also more consistent than steel for stamping, so we get way less variation in the final part\u2019s look and dimensions. That\u2019s critical for mass production\u2014if every third part is a slightly different shade, the whole batch gets rejected.<\/p>\n

Wait, what about conductivity? Aluminum is a way better conductor of heat and electricity than steel, and even copper sometimes. That makes it perfect for electrical components\u2014like the bus bars we stamp for solar panels, or heat sinks for LED lights. We did a run of heat sinks for a company making grow lights last year, and the aluminum\u2019s high thermal conductivity meant they didn\u2019t have to add extra cooling fins to the part, cutting material costs by 15% and making the light unit smaller. For heat sinks, the shape of the stamped fins is key too\u2014aluminum is malleable enough that we can stamp thin, closely spaced fins that maximize surface area, which steel would never do without costing a fortune. And for electrical parts, the oxide layer I mentioned earlier? It\u2019s an insulator, so we have to make sure we remove it from contact points during stamping, but that\u2019s a simple step in our process. No big deal once you know how to handle it.<\/p>\n

Now, let\u2019s talk about the downsides, because I don\u2019t want to sugarcoat this\u2014aluminum isn\u2019t the right choice for every job. It\u2019s softer than steel, so stamped aluminum parts can get dented more easily if they\u2019re going to be exposed to rough use, like heavy equipment components. Also, if you\u2019re working with really high loads\u2014like a truck frame crossmember\u2014steel or even titanium will be stronger for the same weight, so we won\u2019t push aluminum there. Another thing: aluminum has a lower melting point than steel (around 1220\u00b0F vs 2750\u00b0F for mild steel), so if a stamped part is going to be in a high-heat environment, like a engine part, we have to pick a special high-temperature alloy, like 2024, which holds up way better than regular 6061. We\u2019ve learned that the hard way\u2014once we stamped some parts for a small engine manufacturer using 6061, and within a month they deformed from the heat. We switched to 2024 and haven\u2019t had a problem since. That\u2019s why we always ask clients so many questions upfront: what\u2019s the part going to be used in? What\u2019s the environment? How many parts do you need? We don\u2019t want to sell someone a part that works for a few months, that\u2019s bad for business.<\/p>\n

One thing a lot of clients don\u2019t realize is that stamping aluminum is actually more material-efficient than stamping steel. Because it\u2019s softer, we can cut tighter blanks\u2014less scrap from the initial coil\u2014and when we do the forming steps, we don\u2019t have to leave as much extra material for bends or cuts. A typical steel stamping has around 12% scrap, but aluminum is usually around 8-10%\u2014that adds up big time on 10,000 part runs. And since aluminum is recyclable, the scrap we do generate goes right back to the smelter, no waste. We actually send all our aluminum scrap to a local recycler that pays us for it, which offsets some of our material costs. That\u2019s a win for both us and the client, since we can keep part prices lower.<\/p>\n

Let me throw in a real example to make this concrete. A few months ago, a startup came to us with a design for a portable camp stove. They had a brass part they\u2019d been prototyping with, but it was heavy, expensive, and prone to tarnishing. We switched them to stamped 5052 aluminum, which has great formability and corrosion resistance. The final stove component was 40% lighter than the brass prototype, 25% cheaper to make, and we added a powder coat finish so it matched their company\u2019s black brand color perfectly. They went from hand-making 100 prototypes a week to us stamping 5,000 a month, and they haven\u2019t had a single quality issue in 8 months. That\u2019s the kind of result we live for here.<\/p>\n

Now, if you\u2019re someone who\u2019s looking for stamped parts for your project, whether it\u2019s a small startup or a big manufacturing company, there are a couple of things you should keep in mind when working with aluminum. First, don\u2019t assume all aluminum is the same\u2014ask your supplier what alloy they\u2019re using, and why. 6061 is great for most general use, but don\u2019t ask for it for a part that needs high strength or deep drawing. Second, make sure your supplier has experience stamping aluminum specifically. Like I said earlier, the stamping parameters are totally different from steel\u2014press speed, tonnage, lubrication, even the tooling. We use different stamping dies for aluminum than we do for steel, because aluminum is softer and can gall (stick to the die) if you don\u2019t use the right lubricant. Third, think about your end use environment\u2014are you part going outside? Near chemicals? Under high heat? That will determine which alloy and finish works best.<\/p>\n

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At the end of the day, stamped aluminum parts are versatile, cost-effective, and reliable for so many applications. They check all the boxes for light weight, corrosion resistance, great surface finishes, and good conductivity, as long as you pick the right alloy and work with a supplier who knows how to stamp them correctly. If you\u2019re tired of dealing with heavy, rust-prone steel parts or flimsy plastic, give aluminum a shot. We\u2019ve got the expertise to walk you through every step\u2014from picking the right alloy to getting the perfect finish\u2014and we can handle runs of 100 prototypes all the way up to 100,000 production parts. If you need to chat about your project, just reach out to us to start the conversation. We\u2019re here to help make your parts work, look good, and hold up for years.<\/p>\n

DPDT Changeover DC Contactor<\/a> References
\nASM International. (2019). Aluminum Alloys: Properties and Selection. ASM Handbook Volume 2: Properties and Selection: Nonferrous Alloys and Special-Purpose Materials.
\nDesign for Manufacturing (DFM) Guide for Stamping Aluminum. (2021). Society of Manufacturing Engineers (SME).
\nKaufman, J. G. (2000). Introduction to Aluminum Alloys and Tempers. Aluminum Association.<\/p>\n

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Zhejiang Aokai Electric Co., Ltd.<\/a>
Zhejiang Aokai Electric Co., Ltd. is your best source for the high quality stamping metal parts with CE certification. We have been one of the largest stamping metal parts manufacturers and suppliers in China since our establishment in 2008. Welcome to contact our factory for the products.
Address: No.166 Xiangbai Road, Huxi Industrial, Yueqing, China.
E-mail: akcontactor@aokai.com
WebSite: https:\/\/www.ak-contactor.com\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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