Hex Dumbbells for Weight Training on a Budget

Cast Iron Hex Dumbbells: Features, Materials, and Selection Guide

Cast iron hex dumbbells have been a staple training tool in the exercise industry for many years. As an economical dumbbell choice for providing multiple dumbbell weight increments, cast iron dumbbells can be found in home gyms, new personal training facilities, and other health and wellness facilities on a budget.

What is a Cast Iron Hex Dumbbell?

Also known as grey hex dumbbells, hexagonal iron dumbbells are an inexpensive option to add versatile strength training to any home gym or fitness facility.

Each dumbbell consists of two weighted heads and a centrally located handle shaft. The dumbbell heads are where most of the weight of a dumbbell is consolidated to. The dumbbell heads are cast into the hexagonal shape to prevent rolling when placed on the floor, a dumbbell rack, or momentarily set on a utility bench, a feature that is requested in free weights used in some commercial gym facilities, cruise ships, as well as military ships and submarines.

Joining the two dumbbell heads is the dumbbell handle. The most common is the straight handle with diamond knurling, made from solid steel for heavier weight increments above 12 lbs. There are also a limited number of manufacturers who offer a cast iron hex dumbbell with a contour shaped ergonomic handles, such as manufacturer York Barbell. The contoured hex dumbbell handles feature bands of knurling instead of being fully knurled like the straight handles.

What Exercises Can You Perform With Cast Iron Hex Dumbbells?

The "Big Three," squat, chest press, and deadlift, are essential compound strength training movements that can be performed with dumbbells. Dumbbell rows, military presses, snatches, and lunges are also popular compound exercises where hex dumbbells are utilized. For isolation exercises, standing bicep curls, overhead triceps extensions, flyes, dumbbell hamstring curls, and lateral raises are a few examples of bodybuilding exercises that can be performed with economy dumbbells.

What Are Gray Hex Dumbbells Made Of?

Cast Iron

Elemental iron (Fe), is a key component that makes up the broad array of iron materials utilized in fitness equipment. Cast iron is an alloy of iron and carbon, a combination of mostly these elements with a 2-4% proportion of carbon, and varying amounts of silicon and manganese. Cast iron is a key material manufacturers utilize for creating economy hex dumbbells due to its cost effectiveness and molding ability, making up the dumbbell heads as well as handles of some of the lighter increments.

Steel

Steel is also utilized in the manufacturing of the cost effective gray hex dumbbells. Steel is also an alloy of iron and carbon, but containing less than 2% carbon. With a higher tensile strength than cast iron, steel is utilized as the dumbbell handle material for the heavier hex dumbbell weight increments heavier than 12 lbs.

Are All Hex Dumbbells Made the Same Way?

Iron hex dumbbells can be categorized as both residential use and commercial use dumbbells.

Residential Iron Hex Dumbbells

Residential iron hex dumbbells are an "entry level" dumbbell designed to be as cost efficient as possible. Intended strictly for the home gym environment, dumbbells sets in this category will typically have lighter weights up to 12 lbs. fully cast as one piece. While heavier dumbbells will be manufactured typically with straight steel handles adhered to cast iron dumbbell heads, they can be prone to separation from dropping and knocking of dumbbells together. Warranty is minimal for residential hex dumbbells, typically a 30-day warranty from manufacturer defects but not from breakage due to use. Craters, chipping of paint, rough knurling, and wide deviations from the specified weight of the dumbbell are common with some manufacturers.

Commercial Iron Hex Dumbbells

Commercial iron hex dumbbells, such as the Iron Hex Dumbbells by CAP Barbell have added safety for use in a commercial environment. With cast iron heads that are cast over the ends of steel dumbbell handles with "fishtail" ends, the dumbbell head/handle joint have greatly improved strength making it virtually impossible to separate.

Do Cast Iron Hex Dumbbells Require Any Maintenance?

Although lubricating, tightening of bolts, and other alterations do not apply to hex dumbbells, proper use and storage will keep them looking new. Harsh impacts from dropping, as well as "clanking" of dumbbells is best to be prevented as such collisions can crack and chip paint, and possibly lead to dumbbell failure with head detachment for residential dumbbells.

Dumbbells are recommended to used with rubber flooring to prevent scratching or chipping, or stored on a dumbbell rack. Dumbbells should be utilized in dry environments as moisture can lead to rust and accelerate pitting of the iron and flaking of surrounding paint. Enamel touch-up paint found at local hardware stores can be found to match many "gray" shades of cast iron hex dumbbells to provide better aesthetics as well as offset corrosion.

Upgrading to rubber coated hex dumbbells for the home gym or facility is the next level of upgrade to bypass issues of paint chips and rusting. Though the rubber coated and urethane coated hex dumbbells are not recommended to be dropped, they are more forgiving to impacts.

Types of Dumbbell Racks for Hex Shaped Dumbbells

Vertical Dumbbell Racks

For residential settings, a vertical style dumbbell rack, such as the CAP Barbell RK-12 A-Frame dumbbell rack, allows for 6 pairs of hex dumbbells between 5-30 lbs. to be stored with minimal floor space.

Tray-Style Dumbbell Racks

Commercial settings using commercial hex head dumbbells are recommended to utilize a tray style dumbbell rack, such as the York Barbell 69128 2-Tier Tray Dumbbell Rack. Tray style dumbbell racks lessen than likelihood of fingers being pinched while providing easy access to the dumbbell handles with the set-back stadium trays. As an added benefit, the York dumbbell rack has the trays lined with rubber to prevent scratching and paint chipping.

Suggested Hex Dumbbells and Dumbbell Equipment

Buyers comparing dumbbells for home or commercial weight training can explore IRON COMPANY dumbbells, including iron hex dumbbells, rubber hex dumbbells, and urethane hex dumbbells. These categories provide options for comparing materials, construction and intended training environments.

Relevant equipment options include CAP Barbell Gray Cast Iron Hex Dumbbells for buyers considering traditional economy iron construction, IRON COMPANY Rubber Hex Dumbbell Sets for buyers considering rubber-coated alternatives, and IRON COMPANY Urethane Hex Dumbbells for buyers comparing urethane-coated options.

Where Can I Obtain More Information on Affordable Hex Dumbbell Sets?

Contact a sales representative at IRON COMPANY for further education on the various gray hex dumbbells available for home gyms and commercial use.

About the Author: IRON COMPANY Editorial Team

The IRON COMPANY Editorial Team creates and maintains buyer-focused content for gym equipment, gym flooring, cardio equipment, strength training equipment, free weights, and related fitness facility solutions. Our content is developed to help residential, commercial, government, military, school, institutional, and facility buyers compare products, understand key specifications, avoid common buying mistakes, and make more informed purchasing decisions. When appropriate, content is reviewed against manufacturer information, product specifications, IRON COMPANY category knowledge, and current purchasing considerations before publication.