Advanced MIM technology drives defence innovation with design flexibility and precision metal components.

OptiMIM Defense.jpg

Defence

Speak to an engineer

Large Square Card_Zinc.jpg

MIM components are known for their durability and longevity, which is essential for equipment that must withstand harsh conditions and heavy use.

Durability and longevity

Large Square Card_Magnesium.jpg

MIM is well-suited for producing small, lightweight components, which are often necessary for defence applications requiring compact, portable and lightweight equipment.

Reduced part weight

Large Square Card_Aluminum.jpg

MIM enables the production of highly precise and accurate components, which are critical for defence applications requiring strict tolerances and dimensional accuracy.

Strict dimensional accuracy

MIM can help improve supply chain management by reducing the number of suppliers and simplifying the manufacturing process, while adhering to ITAR and CUI compliance.

Supply chain management

Defence leaders choose OptiMIM to help achieve key goals

Black and OptiMIM purple thermal map pattern

OptiMIM Background

A look at

defence applications

Search all certifications

Certification.png

Industry-leading certifications

View all resources

<p>Metal injection moulding is a process that combines plastic injection moulding and powder metallurgy. It produces precise, complex metal parts, including <a href="/materials/stainless-steels" target="_self">stainless steel</a> and other <a href="/materials/low-alloy-steels" target="_self">low-alloy steels</a>, often in large quantities. Machining, which removes unwanted material from a metal block, offers similar alloy options but may be less cost-effective for complex parts. Before MIM, machining was the primary option for non-castable parts.</p><h2>Differences between metal injection moulding and machining</h2><p>In terms of similarities, MIM generally compares well with machined parts in terms of finished components. Typically, MIM components can be used in the same applications as machined parts—including aerospace, medical and firearms applications—and in some cases, MIM parts look very similar to machined parts. However, <a href="/metal-injection-molding/benefits" target="_self">metal injection moulding offers advantages</a> for precision components that machining does not provide.</p><h3>Unique geometry</h3><p>MIM offers unique geometry and complexity capabilities. Machining provides limited intricacy, flexibility and design freedom, and it is often more difficult to machine complex components. As components become more complex, MIM becomes more cost-effective because more complex parts require more machine time to produce.</p><h3>Strength &amp; performance</h3><p>While both processes yield strong parts, MIM components do not undergo machine-induced stress or internal pressure, which may result in deformation over time and potential part failure. MIM parts are moulded using conventional moulding machines and then placed in an oven, where the wax is strategically melted from the component, leaving a strong, solid component.</p><h3>Mould investment</h3><p>When creating a MIM component, the complexity of the part is usually tied to the mould investment. This means that the mould or tool itself is complex, so there is one upfront cost tied to the complexity of your component. With machining, adding complexity adds extra cost and process time to the part price.</p><h3>Material scrap</h3><p>Material scrap is not wasted in the MIM process. This is important because, as a customer sourcing a machined part, you are paying for that scrap. With the MIM process, you do not have to spend funds that could be used elsewhere.</p><h3>Capacity</h3><p>MIM is more scalable when ramping up capacity. Machining takes a considerable amount of time to produce complex parts, so if you want to increase from 10k parts a week to 20k, you have to buy more CNC machines to reach capacity. With MIM, you do not have to do that.</p><h2>Other metal injection moulding benefits</h2><p>When you use the MIM process, you also gain:</p><ul><li>Repeatability</li><li>Improved cycle time</li><li>Part consolidation</li><li>Reduced need for secondary operations</li></ul><h2>Why choose MIM over machining?</h2><p>MIM becomes a more cost-effective alternative to machining for some applications when you consider the volume and complexity of your project. MIM produces complex, net-shape components that require no secondary machining operations. When applied appropriately, MIM can significantly decrease costs associated with secondary overhead while increasing production rates.</p><p><strong>Our team of engineers offers design solutions for a variety of industries, including consumer electronics, automotive, healthcare and more. When our engineers are involved early in the project, they can help design a tool and part specifically for mass production. </strong><a href="/contact-us" target="_self"><strong>Contact our team</strong></a><strong> today to get started on your next project.</strong></p>

OptiMIM_Extras_machine.jpeg

Compare benefits and trade-offs of MIM and conventional CNC machining, including cost per part, component complexity, production scalability across volumes."

Metal injection moulding vs. machining | OptiMIM article

MIM is a more cost-effective alternative to machining for complex, high-volume parts, offering benefits such as unique geometry, reduced material scrap and improved cycle time. 

MIM vs. machining

<h2>Complexity demands precision</h2><p>When you think of the metal injection moulding and powder metallurgy processes, a few key characteristics come to mind. These components are usually high in mechanical strength, highly dense, and perform well in corrosive environments. Because of the nature of the MIM process specifically, MIM components are exceptionally dense across the board.</p><p>But what sets the <a href="/about-us/company-overview" target="_self">OptiMIM process</a> apart from the rest? Far and away, our distinguishing factor is our custom feedstock and enhanced material performance. While many of our competitors import BASF feedstock to mould components, our OptiMIM metallurgists make specialised, made-to-order feedstock with compositions tailored to each project. Since we produce our own feedstock, we have full control of all the ingredients, the recipes, and especially the control of the variables so we can guarantee the precise composition and consistency of each component.</p><h2>Why does material composition matter?</h2><p>Made-to-order feedstock sounds great on paper. But how does the quality difference translate to part performance?</p><p>With MIM, custom feedstock and precise powder composition contribute to an enhanced grain structure and grain boundary condition. This adds up to reliable and repeatable capabilities, optimal part density, highest ultimate strength, and best elongation of all final MIM components.</p><p>Since we manufacture our own feedstock, we have the freedom to specify the metal particle size distribution and develop the binder composition for each project. This makes OptiMIM’s process fully customisable to deliver the end mechanical performance and properties your application requires rather than having to settle for off-the-shelf properties of wrought metals.  Our technical experts are able to manipulate these elements to deliver on different performance requirements. This, partnered with our ability to optimise furnace recipes, ensures that OptiMIM parts are more structurally sound and consistent, perform more reliably, and are less prone to embrittlement (cracking) than parts produced with BASF feedstock. Since we can guarantee the structure and exact material composition of each part, we can guarantee industry-leading yield strength and other relevant mechanical properties.</p><h2>MIM metals: superior performance</h2><p>OptiMIM’s precise and uniquely engineered feedstock composition, along with our proprietary grain structure, allows us to deliver both high strength as well as the highest elongation (ductility) performance in the industry. With other processes, design engineers are often forced to decide between optimising mechanical strength or optimising elongation—with OptiMIM you can have both.</p><p>For example, with 17-4PH stainless steel, heat treated to H-900, the OptiMIM mechanical properties yield up to 19% better ultimate and yield strength and up to 125% higher elongation than the Metal Powder Industries Federation (MPIF Std 35) industry standards.</p><h2>What are my material options for metal injection moulding?</h2><p>At OptiMIM, we specialise in various ferrous and non-ferrous alloys including several <a href="/materials/stainless-steels" target="_self">stainless steel grades</a>, copper and copper alloys, and <a href="/materials/low-alloy-steels" target="_self">low alloy steel</a> components which make up about 70% of our business. We also have experience processing specialty alloys like Cobalt-Chromium (F-75) and other high alloy materials. But that’s not all we do.</p><p><a href="/materials/metal-selector-tool" target="_self">MIM materials</a> can have their chemistries modified when utilised in the complex metal injection moulding process. These materials are customisable and come in a wide variety, and they generally fall into four categories:</p><h4>Ferrous alloys</h4><p>Steels, stainless steels, tool steels, iron-nickel magnetic alloys, non-magnetic alloys and specialty alloys such as Invar and Kovar make up our ferrous alloy materials. Ferrous alloys are characteristically strong because they have an iron-based composition, and are often used in medical and automotive applications.</p><h4>Tungsten alloys</h4><p>Our tungsten alloys are characteristically high in tensile strength and are naturally resistant to corrosion. We often work with a tungsten-copper alloy for parts that require a material that is heat-resistant, ablation-resistant, and highly thermally and electrically conductive.</p><h4>Cemented carbide alloys</h4><p>The MIM process is compatible with hard materials such as cemented carbides and cermets. These materials consist of hard and wear-resistant carbide and a tough and ductile metal binder, thus delivering a unique combination of hardness and toughness.</p><h4>Special material alloys</h4><p><a href="/materials/special-and-custom-materials" target="_self">Specialty materials</a> that we see a lot in the MIM process include, but are not limited to, precious metals, titanium alloys, cobalt-chromium, nickel, nickel-base super alloys, molybdenum, molybdenum-copper, and particulate composites.</p>

Optimim_Metals_Hero.jpeg

Compare MIM material options with traditional manufacturing methods to understand trade-offs in strength, durability and design flexibility for decisions.

Material options – how does MIM compare? | OptiMIM article

OptiMIM's unique, customisable feedstock allows for greater control over material properties in metal injection moulding, resulting in components with superior strength, ductility, and consistency compared to those made with standard feedstocks. 

Material options – how does MIM compare?

<p>The <a href="/metal-injection-molding/process" target="_self">Metal Injection Moulding (MIM) process</a> combines plastic injection moulding and powder metallurgy, offering greater design flexibility for shaping metals such as stainless steel, titanium, and copper. The process begins with creating a feedstock of fine metal powders mixed with thermoplastic and wax binders, which is then injected into a mould to form a "green" part. After debinding to remove the binders, the part undergoes sintering at high temperatures to achieve its final strength and geometry, resulting in highly precise, complex components with reduced production costs.</p>

Metal Injection Molding Process Video

Metal Injection Moulding (MIM) combines plastic injection moulding and powder metallurgy, offering greater design flexibility for shaping metals such as stainless steel, titanium, and copper. The process begins with creating a feedstock of fine metal powders mixed with thermoplastic and wax binders, which is then injected into a mould to form a "green" part. After debinding to remove the binders, the part undergoes sintering at high temperatures to achieve its final strength and geometry, resulting in highly precise, complex components with reduced production costs.

Defence

Defence leaders choose OptiMIM to help achieve key goals

Durability and longevity

Reduced part weight

Strict dimensional accuracy

Supply chain management

A look at
defence applications

Industry-leading certifications

BEYOND THE BASICS

Expand your knowledge of metal injection moulding for defence

Article

Article

Video

Global reach, tailored solutions

Interested in starting your MIM project?

Defence

Defence leaders choose OptiMIM to help achieve key goals

Durability and longevity

Reduced part weight

Strict dimensional accuracy

Supply chain management

A look atdefence applications

Industry-leading certifications

BEYOND THE BASICS

Expand your knowledge of metal injection moulding for defence

Article

Article

Video

Global reach, tailored solutions

Interested in starting your MIM project?

A look at
defence applications