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We offer the best product range of Forklift Counterweights, Crane/Hoist Test Weights, Marine Ballast Weights, Industrial Mine Shaft Weights and Window Sash Weights.

Forklift Counterweights

MarsMetal manufactures custom and production Forklift Counterweights to satisfy your specific requirements. Forklift types that commonly utilize counterweights are the stand-up rider and sit-down counter-balanced forklifts. Sit-down counter-balanced types commonly place counterweights in between or behind the rear wheels. Counterweights are used to secure a proper weight distribution and maintain stability, to prevent the vehicle from tipping over and to ensure the safety performance of the vehicle. There are two main groups of forklift counterweights : Bulk type: Specifically designed hollow body part at back end or between wheels that for space savings is typically lead filled.Stack type: Cast metal housings steel canisters or metal plates designed to stack onto a base plate. Stacking or removing enables configuration for maximum lift weight.Capabilities Complex lead counterweight castings for OEMsStraight lead fills into your fabricated or cast housingsAll steel and lead filled counterweight additionsDesigned and fabricated to suit your applicationLead Filled Forklift Counterweights and Counterweight Additions When size matters, choose lead filledLead is approximately 45% more dense than steelCounterweight or Addition can be smaller, shorter, narrower, etc.All Steel Forklift Counterweight Additions When size is less of an issue, choose all steelAll steel counterweight additions are generally lower cost than lead filled additions
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Lead Ingot

Mars Metal is your source for ingot lead. Lead ingots have managed to acquire a variety of industry specific names. Ingot lead can also be known as lead pigs, bullion or bar lead and range in size from 10 LB ice cube tray ingots to 70 LB large ingots. For more information please see the dimensioned line drawings and renderings below to help you decide on the ingot sizing that suits you best. We are able to provide ingots individually or in bundles. We Supply: Lead ingots produced to ASTM B29-03 specifications for refined pure at 99.97% and pure lead at 99.94%Lead ingots that tweak the standard purity specifications to include very low sulfur at controlled levelsPurity specifications like those listed above would be used in radiation shielding applications for interlocking lead bricks or nuclear quality pours as well as extrusion lines that require a very consistent lead quality to achieve reliable repeat values. *G2 ballast grade pig lead that would satisfy the requirements of the end user requiring a heavy metal lead ballast weight solution*This material is produced to a 96.5% minimum purity lead level and may contain 1.5-3% Antimony (Sb) and .1-3.5% Tin (Sn) Mars Metal is able to provide you with very specific lead grades such as: Chemical Copper leadLow sulfurLow bismuthLow silver pure leadVarious alloyed lead ingots produced to meet your specifications, such as 3% antimonial bullion (typically used for sailboat keels) or 6% antimonial bullion
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Crane/Hoist Test Weights

Crane Hoist test weights are used in the periodic re-certification of lifting equipment. The Mars Metal Company, Specialty Casting Division will work with you to design test weights that exactly meet your requirements. Individual weights can be designed to achieve the desired total weight requirements by stacking or nesting weight combinations. This will allow you to test all lifting devices in your facility. Each weight is clearly labeled to ensure that the correct combinations can be selected to suit your testing requirements. Lead offers a real advantage in space savings as lead filled test weights are approximately 45% heavier by volume than steel and more than 4.5 times heavier by volume than cured concrete. When size matters, choose lead filled test weights. When size is less of an issue, choose all steel test weights. All steel test weights are generally lower cost than lead filled. Whether its Lead Filled or All Steel test weights, we bring a wealth of experience to the table, so challenge us !
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Custom Castings

Mars Metal Company, Specialty Casting Division, has a wealth of experience in turning your custom casting requirements into reality. We have the capability of producing high precision castings to nuclear quality specifications to achieve the maximum density possible from a lead casting. We can produce custom, one-offs and production runs in any quantity you desire from less than one pound to continuous pours in excess of 150, 000 LBS. We have done art castings using the lost wax process and very basic lead fills into canisters provided by you for simple heavy metal requirements. For complicated projects we are able to supply pattern making capabilities and mold making so you can get the exact shape and weight that you require. We can supply machined all over parts in one-offs and production runs and, if requested, we can provide finished parts painted to your specifications.Our talented sales and engineering staff are able to assist in all facets of your project from design to delivery of your requirement.
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Bridge Weights

Mars Metal Company is capable of pattern-making and mold-making to provide you with complex, lead bridge weight castings, straight lead fills into your fabricated or cast housing(s) or providing a complete, turn-key, fully-encapsulated bridge weights ready to install. We can design and fabricate steel canisters, fill with lead to your desired weight specification, weld any pour holes closed, surface-grind any projecting weld beads, primer paint and final coat. Due to the extreme density of lead we are able to maximize the bridge weight in the smallest space possible. Lead is approximately 45% more dense than steel so by utilizing lead you are able to make the maximum use of the space available to you. Mars Metal Company has provided valuable input to architects and engineers in solving the complicated problems associated with the counterweights necessary to counterbalance lift and swing bridges. Each application is different and requires a custom solution. Sometimes these solutions require large production runs of individual weights that can be man-handled into place and sometimes they require very large, one-off castings moved into place with heavy lift material handling equipment. Our talented and capable sales and engineering staff will work with you to design a solution, manufacture the required weight(s) and deliver them to the site when you need them.
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Commercial Elevator Weights

New elevator construction is not usually done with lead counterweights but when the end user wants or needs to increase an existing elevators capacity, it requires a new counterweight. Rarely is there room on the counterweight to increase the stack height due to head room restrictions. This is where lead is an invaluable product to solve the problem. Because lead is so much more dense than steel approximately 45% greater the company performing the upgrade is able to remove the existing steel or cast iron weights until they reach the point where a corresponding stacked height of lead counterweights will provide the necessary weight to counterbalance the new weight capacity. Each weight that the contractor removes is being replaced with a weight that is 45% heavier. Re-counterweighting the elevator becomes a simple math problem. Lead is often the only substitute that will do the job. Contact us and let us work out the solution for you. Our talented and capable sales and engineering staff will work with you to design a solution, manufacture the required weight(s) and deliver them to the site when you need them. Challenge us and let us show you what we can do to solve your counterweight problems and smooth the path to completion.
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Marine Ballast Weights

Mars Metal supplies Marine Ballast Weight products, such as sheet lead, lead shot and ballistic shot bags, and lead ingots. In Stock: Over 300 tons of standard ingot lead barsLearn more about our lead ingotsOver 20 tons (18, 182kg) of either bagged shot or bulk lead shotLearn more about out lead shotOver 70 tons of sheet leadLearn more about out sheet leadOur talented and capable sales and engineering staff will work also with you to design a custom solution, manufacture the required weight(s) and deliver them to the site when you need them. Our MarsKeel division specializes in all things marinecustom and production sailboat keels, internal ballast, custom prop shaft struts and much more. Please visit www.marskeel.com for more information. Why use counterweights in the marine industry? Counterweights used in the marine industry are used for two similar but slightly different reasons. When you build a boat of any size, you have to counterbalance the boat. In the case of a sailboat, you have to counterbalance it against the effects of the wind filling the sails. In the case of a motorized vessel, one needs to counterbalance the height and weight of the superstructure above the waterline in heaving seas and strong winds. Sailors might be heard referring to their boat as being tender. This is another term for improperly ballasted. Internal ballast is often how this is accomplished. Custom made, specially-shaped lead castings matching the shape of the bottom of the hull are placed at the deepest part of the hull and then distributed evenly fore and aft. Adding the right amount of ballast settles the boat lower in the water making it more stable and significantly safer. This ballasting process can also be accomplished by using standard lead ingots andor lead shot to achieve the desired stability. Another reason that you might need to consider marine ballast weight is to trim-ballast your boat. If you have just installed your new Corian countertops or that new water maker that you have always wanted, but now the extra weight has your boat sitting off level in the water. A few well-placed lead ingots or perhaps some custom-cast ballast shapes will do the trick to bring your boat back to a nice even keel.
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Industrial Mine Shaft Weights

Mine shafts pose special and complicated elevator counterweight issues. Not only does the elevator car need counterweights but it usually requires guide wires to keep the elevator properly aligned within the mine shaft. Mine shaft elevators are critical for moving men and equipment through the various mine levels stretching hundreds, and often thousands of feet deep. The car itself requires a counter weight for elevators that are capable of carrying 50, 000 lbs. or more of equipment to where it is needed but of equal importance is guiding the car properly. These guides are often heavily-weighted, highly-tensioned steel cables that reach all the way to the bottom of the mine. A huge weight usually made of dozens of custom lead castings anchor these cables providing the necessary guidance for the elevator car as it traverses the depths of the mine. Lead is approximately 45% more dense than steel so by utilizing lead you are able to make the maximum use of the space available to you. Another great feature of lead is that it is a non-ferrous metal so it will not rust like other weight mediums such as steel or cast iron. Mine shafts are harsh environments so using a non-ferrous metal provides added life expectancy, reduced maintenance and provides a safer overall environment. Mars Metal Company, Specialty Casting Division has worked with several customers to provide then with the cooperative solutions they require. Our talented and capable sales and engineering staff will work with you to design a solution, manufacture the required weight(s) and deliver them to the site when you need them. Challenge us and let us show you what we can do to solve your counterweight problems.
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Window Sash Weights

Window Sash WeightsLead window sash weights are becoming the choice by many contractors over steel cast weights due to the space savings obtained. Lead is approximately 40% smaller in size than steel and lead is non rusting material. Lead counterweights can also be easily cut on site if required and reused for other weights. Mars Metal provides a wide range of cast and extruded lead window weights, designed to facilitate the balancing of window sashes. We produce lead window counterbalance weights for both traditional and modern double glazed units. The variety of sizes we offer provides the flexibility in ensuring the optimal balance is met. Features of our Window Sash Weights: Custom sizes to meet your exact needsAvailable in round, square or rectangular sections to your desirable lengthProvided with or without centre holes*Extruded stock sizes are subject to available stock dies
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Damper Weights

Mars Metal damper weights work to counteract the affects of vibration. Vibration, as perceptible mechanical vibrations can be generated by many sources: Transportation sources such as subwaysHeavy truck traffic or street carsMachinery in buildings such as HVAC unitsPeople in buildings such as dancing, aerobics, chanting or cheeringEven the wind which can cause buildings to sway.These vibrations can generate unwanted structure-borne sound, and in severe cases can cause damage to the structure itself. Dampers can have several forms: seismic isolation dampers; tuned mass dampers; vibration control dampers, but the common thread to all of them is that they are very large, heavy weights that move in opposition to the frequency of the vibration or oscillations that the structure is experiencing. Lead damper weights utilize the extreme density of lead to make the damper weight as compact as possible, and being a non-ferrous metal they will not rust. Mars Metal Company, Specialty Casting Division has experience with counterweights of every description and we are able to work with you to provide the weight factor and compactness that makes lead-filled damper weights so desirable. Let Mars Metal provide the damper weight solution you need in order to minimize unwanted and potentially destructive vibrations. Mars Metal Company, Specialty Casting Division has worked with many customers to provide them with the cooperative solutions they require. Challenge us and let us show you what we can do to solve your counterweight problems.
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Elevator Test Carts

Elevator test weights are essential for ensuring the safety of the elevators that we take for granted in our daily lives. We see them everywhere, we use them without thought or worry (at least most of us) and we take it for granted that they are safe. Elevator test weight carts are a critical component in the testing and certification of elevators. Elevator service and repair companies use them regularly and we supply them to the industry. Each cart is engineered specifically for the elevator industry and is designed with safety, serviceability and durability in mind. Each unit weighs 500 LBS and is balanced for ease of handling. The cart itself weighs 100 LBS and comes with eight, ergonomically-shaped 50 LB weights. Our test carts consist of a rigidly constructed box section fabricated from 14 steel plate and 1 schedule 40 steel pipe. The wheels on this cart are a steel core with solid rubber tires and have roller bearings and grease fittings. The cart is painted safety red using an OSHA oxide paint. All carts are equipped with a diameter steel rod designed to accept a padlock that protects the individual test weights from theft.
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Aerospace Test Weights

Before any new or modified aircraft design leaves the ground carrying passengers it must first undergo rigid testing to ensure the safety of the design. Many of the components are tested to destruction so areas like the wings and tail sections can experience the maximum design stresses and prove the design parameters are being met. Other applications for test weights in the aerospace industry include in-flight testing for uneven loading and load shifting and taxiway evaluation to simulate full loads for brake testing under a variety of situations. Mars Metal Company, Specialty Casting Division provides an industry-approved, easy-to-handle weight to satisfy this requirement. Each weight consists of 25 lbs of lead shot sewn into a denier nylon bag for destructive testing applications or a ballistic nylon bag treated with flame retardant to exceed industry standards for actual in-flight testing applications.
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Extruded Lead

Extruded LeadPipeBarMars Metal Company, Specialty Casting Division is your supplier for extruded lead pipe and bar products. The extrusion process provides a very accurate shape that is very dense. The pressures necessary for extruding pipes or shapes ensures very little porosity in the lead and it provides a very smooth and consistent surface. Various alloys are available from pure at 99.97% through various copper, tin and antimony alloys in varying percentages. The low melting temperature of lead, high density, corrosion-resistance, malleability and relative low cost make it attractive for use in many applications. Extruded Lead Pipe Our extruded lead pipe is available in standard sizes from .375 OD through 10 OD with uniform wall thicknesses. Pipe from .375 OD through 1.5 OD is available coiled while 2 OD through 10 OD is available in up to 10 lengths packed in fiber tubes for protection and straightness. Lead pipes are generally, but not exclusively, used for carrying acids and corrosive chemicals or for sheathing sensitive communication cable runs for waterproofing purposes. Extruded Lead Bar Our inventory of extrusion dies is extensive and includes round, ribbed, elliptical, rectangular, and square and is available in various lengths. Extruded lead bar has many applications. Challenge us and let us produce the size and alloy that perfectly suits your requirements. If the extrusion dies arent part of our inventory then we can produce one to suit your needs.
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Sheet Lead Overview

Sheet Lead OverviewOver 70 tons of sheet lead in stock in various sizes are available for quick turnaround at our warehouse! Our high quality Sheet Lead is manufactured from pure lead conforming to ASTM B-29, B-749 and Federal QQ-L-201F, QQ-L-171E. Mars Metal offers sheet lead as laminated panels, adhesive bonded to such materials like plywood, gypsum board, and other supporting materials. Since sheet lead has very little inherent structural strength, most applications require that the sheet lead be supported in some fashion, or that the sheet lead be laminated to provide a more rigid building material. Mars Metal offers quick turnaround time on all sheet lead. With our large inventory of sheet lead most orders can be shipped out on the same day. We offer in house Precision 3D and CNC Machining of sheet lead. Learn More.
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Lead Bricks

Our MarShield division manufactures straight, interlocking, and corner lead bricks, commonly used for radiation shielding or ballast weight. Bricks are available in a wide range of sizes, thicknesses and shapes to suit your application. If you would like more information on our lead bricks please visit our lead brick page on our MarShield website.
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Radiation Shielding

MarShield is a Canadian manufacturer with exceptional experience in nuclear lead castings and nuclear lead pours. We have proven ourselves to be leaders in the field by helping companies from the first stages of product development right though to a completed, lead filled component. At MarShield we have the facilities to pour molten lead in a continuous pour in excess of 100, 000 lbs. This provides a nuclear lead pour consisting of low porosity, high density lead into a customers supplied, fabricated weldment. We use only purest lead meeting ASTM B29 standards. We specialize in all types of structural lead pours including nuclear flasks, nuclear storage containers, pipe sleeves and castings.
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Lead Shot

Lead Shot Using lead shot for radiation shielding? Visit our MarShield website for comprehensive information. Mars Metal provides lead shot as an easy, cost-effective solution for areas where solid lead is impractical, due to location, shape, or accessibility. Applications include ballast, stress testing, vibration control, noise deadening, and radiation shielding. We stock lead shot in standard 25 lb. canvas bags. For added strength and durability, we also offer lead shot in bags manufactured of 600 Denier vinyl coated black nylon or ballistic nylon to meet rigid fire rating specs. Our standard lead shot is #8 (.092.29mm diameter). Density is approximately 436 lbs. per cubic foot. WE OFFER: Chilled Lead Shot Highly-polished, uniformly-round, accurately-sized and consistently-dense shot. Graphite-coated. Custom embroidery or printing is available on application.
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