THE HIGHEST STANDARD IN METAL FABRICATION

Leading Light Gauge Metal Fabrication - Manufacturing Company

Light Gauge roofing material, parts and supplies are our specialty. In addition to all of our roofing and siding materials, Metro Metal Supply can help with any of your light gauge metal needs. We can also customize many types of metal applications for a wide variety of projects.

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Metal Roof — Denver, CO — Metro Metal Supply

METAL FABRICATION

Light gauge steel is easily customizable. Thanks to the efforts of modern software

Consulting — Denver, CO — Metro Metal Supply

CONSULTING SERVICES

Metro Metal's approach enables us to tailor our solutions

Design Services — Denver, CO — Metro Metal Supply

DESIGN SERVICES

Metro Metal can provide complete drawings for your sheet metal design..

Design Icon — Denver, CO — Metro Metal Supply

QUALITY METAL DESIGNS

Metro Metal designers have over 30 years experience in the metal industry and can do standard to custom light gauge metal designs for all your roofing and project needs.

FABRICATION - MANUFACTURING

We manufacture light gauge metal and have the ability to customize or do standard applications. Our quality of service is second to none in the industry..

MODERN EQUIPMENT

The equipment and design applications at Metro Metal meet or exceed all industry standards. We pride ourselves in keeping up to date with all safety requirements.

THE STANDARD FOR LIGHT GAUGE FABRICATION

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Metro Metal Supply offers pricing at a very competitive rate for Fabrication and Raw Metal.

Providing a wide range of light gauge metal products for several industries.

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Insights And Trends From Our Blog!

Raw Aluminum  — Denver, CO — Metro Metal Supply
By MetroMetal 15 Aug, 2021
The Strength of Aluminum – from Aluminum.org From Automakers to the U.S. Military, Those in the Know Trust Aluminum If you’re like many people, when you hear the word “aluminum”, you think of everyday convenience items that, while incredibly useful, don’t exactly convey a high-strength image. And it’s true – aluminum is a highly versatile metal – meaning it can be processed to be thin, lightweight, bendable and even crushable by human hands. What’s less well-understood is that aluminum can also be some of the toughest stuff on earth. Often, the metal is used in applications where high-strength and durability are the most important considerations – from cars and trucks to building material to military vehicles. You likely trust aluminum to keep you safe and secure dozens of times a day without even knowing it. Take-Away Facts The Key to Auto Safety: Automakers are increasingly turning to aluminum as part of the multi-material mix to increase vehicle fuel efficiency while maintaining strength and safety. Every aluminum-intensive vehicle ever crash tested by the National Highway Traffic Safety Administration has earned a 5-star safety rating. High-Strength Aluminum is Everywhere: High-strength aluminum alloys are used in hundreds of everyday applications where strength and durability are essential – from planes to trains, buses to trucks – even some of the world’s tallest skyscrapers. Extreme Applications: Aluminum is also used by the U.S. military, NASA and others to build vehicles and structures capable of thriving in some of the harshest conditions imaginable. The Chemistry of Strength: By adding elements like silicon, magnesium and lithium to pure aluminum and through special processing techniques, aluminum can be engineered to be as strong if not stronger than some steel. Everyday Strength Aluminum is about one-third the weight of steel, meaning parts can be made thicker and stronger while still reducing weight in vehicles and other applications. Depending on the alloy and processing technique used, pound for pound aluminum can be forged to be just as strong if not stronger than some steel. Aluminum is already the second-most-used material by automakers, so your car or truck likely has a lot of aluminum in it right now, protecting you from hazards on the road. Engineers know how to work with aluminum to make parts that perform as well or better than steel parts – all while reducing vehicle weight. Aluminum is highly effective at absorbing crash energy, protecting passengers in the event of an accident. And lighter aluminum vehicles improve performance. Better handling and shorter stopping distances help drivers avoid accidents to begin with. Aluminum is used for window frames and curtain wall in some of the world’s tallest skyscrapers – maybe even the office building you’re sitting in right now. This versatile metal is used to make planes, trains, buses, trucks – even ocean liners! In short, every day, people around the world trust the strength of aluminum – whether they know it or not. Extreme Durability In addition to “everyday” applications, aluminum’s strength and durability is also trusted for some of the most extreme uses imaginable. Designers know that high-strength aluminum alloys can handle some of the harshest conditions on earth – and beyond. U.S. Army: The U.S. Army has trusted aluminum for decades to help protect our troops. The high-strength, crash-absorbent metal is used in the Humvee (HMMWV), HEMTT and Bradley Fighting Vehicle to reduce weight, resist rust and be reliable under tough conditions. Aluminum armor plate is even used to resist explosives and other attacks. NASA: It’s no exaggeration to say that modern space travel would not be possible without aluminum. The metal was widely used in the space shuttle program and NASA chose a high-strength aluminum-lithium alloy to make the new Orion spacecraft, which will someday take humans to Mars. U.S. Air Force: After replacing older wood, steel, wire and fiber aircraft during WWII, high-strength aluminum alloys have become among the most commonly used materials to make military aircraft. Indeed, the airframe for the famed fighter jet – the F-16 – is 80% aluminum. Shark Cages: Even when facing one of nature’s fiercest predators – the strength of aluminum is trusted. Aluminum is the popular choice for shark cages because the metal is more buoyant than alternatives and won’t corrode in salt water. Aluminum bars are more than strong enough to protect divers from direct attacks from Great White and other sharks. The Secret to Strength The secret to aluminum’s strength comes down to chemistry. Pure aluminum is mixed with other elements to create high-strength alloys. Common additives used to increase the strength and formability of aluminum include silicon, magnesium and copper. Aluminum-zinc alloys are some of the strongest alloys available today and are commonly used by the automotive and aerospace industries. Aluminum can be further strengthened through processing – hot rolling or cold rolling. Some alloys are made stronger by heat-treating followed by rapid cooling. This process freezes the atoms in place strengthening the final metal. Alternatively, some aluminum is “cold worked” — usually by rolling, stretching forging or drawing — to make it stronger. This process inhibits the movement of atoms relative to each other, strengthening the finished product. The strongest aluminum alloys – 7000-series alloys – can reach strengths in excess of 72,000 pounds per square inch. A 1.2-inch aluminum wire made from this alloy could suspend a fully-loaded tractor-trailer in the air. 
Standing Seam Roofing In Progress — Denver, CO — Metro Metal Supply
By MetroMetal 02 Aug, 2021
Metal roofs are durable and long-lasting. (from Bob Vila) At the top of the list of metal roofing “pros,” the material’s long lifespan is why most homeowners make the switch in either a re-roofing or new construction. Indeed, that recent McGraw-Hill survey found that 26 percent of homeowners cited longevity as their primary reason for investing in metal and another 22 percent said they were swayed by its strength. A properly installed metal roof typically will last as long as the house, with an expected lifespan of 40 to 70 years and, often, a 30- to 50-year manufacturer’s warranty to boot. (By contrast, traditional asphalt roofing typically lasts 12 to 20 years.) Thanks to the material’s unique durability, you can count on it to withstand the elements—including gusts of wind up to 140 miles per hour—and not corrode nor crack thanks to rust-proof coatings.
Stainless Metal  — Denver, CO — Metro Metal Supply
By MetroMetal 12 Apr, 2021
By Metal Form Magazine Lightweight, easy to form and resistant to rust, aluminum sheet metal offers manufacturers the option of skipping the painting step when producing parts. These benefits make the material popular in a range of applications, from toolboxes and jon boats to signs and awnings. But joining aluminum sheet—for the purposes of this article, sheet measures 0.125 in. thick or less—via gas metal arc welding (GMAW) presents some challenges, as operators must take care to avoid warpage, distortion and burnthrough. The following five tips will help operators better control heat input and improve their techniques, thus optimizing results and reducing rework. 1Use pulsed GMAW welding. The right welding process helps improve results. For example, pulsed GMAW lowers the heat input and makes it easier to weld thin materials and minimize burnthrough. This welding process alternates between a high peak current and a lower background current, which lowers overall amperage. The pulse of peak current propels the molten droplet across the arc and provides the energy to produce good fusion associated with spray transfer, while the low background current allows the weld puddle to cool. Pulsed GMAW also allows operators to run larger-diameter wire at lower currents than needed to run a non-pulsed process, such as constant-voltage (CV) GMAW. In addition, pulsed GMAW provides the ability to better control the bead profile. A wider arc cone helps tie-in both sides of a joint or an outside corner, where a narrow arc cone helps focus the arc and provides good fusion at the root of a joint. Adjusting the arc length (voltage) and wire-feed speed for optimum performance helps eliminate excess heat input, overwelding (making welds that are larger than needed or using too much filler material) and post-weld grinding. 2Choose the best-possible filler-metal alloy. Selecting the best filler metal for welding aluminum sheet presents many factors to consider, such as the base-metal alloy, service temperature, environment, formability and more. The two most-common aluminum filler metals, types 4043 and 5356, produce very different results. A 4043 filler metal features silicon as its main alloying element, which lowers its melting temperature and improves fluidity, helping it wet out better than a 5356 filler metal. Also, silicon expands as it solidifies, meaning that filler metals with high silicon content will experience less contraction as the weld cools. A 4047 filler metal has a slightly lower melting point and about twice as much silicon as compared to 4043, so the welds experience even less contraction/ warpage. Common base metals compatible with 4043 and 4047 filler metals include types 3003, 3004, 6061, 6063, 5005, 5050 and 5052. When using pulsed-GMAW on material from 1⁄8 in. thick to 16-gauge, a 3⁄64-in.-thick filler metal can be used, provided the weld area has a tight fitup. For even thinner materials, try a 0.035-in. filler metal. For CV GMAW on sheet metal, we recommend wire diameters of 0.035 to 0.030 in.Note that readily available 100-percent-argon shielding gas is common for GMAW aluminum-sheet applications. 3 Take the time to ensure proper fitup. Proper, tight part fitup is essential when welding thin material such as sheet metal. Gaps between the pieces to be welded can cause warpage. Even a small gap can turn into a larger gap should a piece warp, forcing the operator to slow down to fill the larger gap, and adding unwanted heat into the weld. This can lead to bottlenecks. In addition to ensuring no gaps in part fitup, slight overlapping of edges is recommended. A lap corner part fitup rather than an outside corner fitup offers a lesser chance of burnthrough. Another option to combat burnthrough issues: Use a copper backing bar during GMAW on sheet. This involves placing or clamping a copper bar on the back side of the welded area, which helps dissipate heat more rapidly than when relying on atmospheric cooling alone. 4 Keep travel speeds high. A rapid travel speed and a small bead during GMAW also helps minimize burnthrough, warpage and distortion. A slower travel speed means dwelling longer in an area, causing heat to build. Operators always should employ stringer beads (not weave) and the fastest travel speed possible to maintain a good bead profile. Backstepping techniques should be avoided, as they slow travel speeds, increasing heat input and distortion. Pulsed GMAW is recommended, as it provides the ability for a rapid travel speed, especially compared to other welding processes available for aluminum sheet.5Use weld-bead sequences. Part geometry and fixturing greatly affect bead sequences. Using weld-bead sequences, such as intermittent welds, rather than a constant weld bead, can help offset distortion and warping. To minimize burnthrough, when possible weld beads in any low heat-sinking areas first. Spreading the weld sequence around the part also helps reduce localized heating. Another option: Make short welds in one direction, starting the next weld behind the beginning of the previous bead. This helps reduce heat buildup while still allowing operators to weld in one direction.

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