Electroplated dumbbell: The whole dumbbell is made of cast iron, which is hard, heavy and dense.

Steel dumbbell dumbbell: steel dumbbell is made of pure steel.

2. The difference in appearance:

Electroplated dumbbell: the surface of dumbbell is electroplated, which is smooth and refreshing, does not rust and does not change color, and can be used permanently. However, the anti-beating ability is poor, and it will go out of shape after several uses.

Steel dumbbell: There is a layer of glaze on the outside. As long as the steel is maintained, it is less prone to rust, more beautiful and more expensive.

3. Price difference

Electroplated dumbbells 10 yuan/kg

Steel dumbbell 15-20 yuan/kg

Extended data:

Discussion on electroplating rust from the source

Electroplated substrates are either easy to rust or too soft to wear, such as copper faucets or some plastics.

The coating is usually stainless steel and wear-resistant metals such as nickel and chromium. Before electroplating, it is generally necessary to thoroughly clean the substrate, remove water-soluble pollution and grease, remove rust by pickling, corrode nano-scale holes and increase coating strength. Others need excessive plating to increase adhesion, such as copper and chromium plating on steel surface. It can be seen that the peeling of electroplating layer is basically caused by improper control of cleaning and electroplating process parameters. If you knock frequently, the coating will also fall off because of the different elastic coefficient and expansion coefficient between the coating and the substrate inside. Once it falls off, it can only be treated by ordinary anti-rust methods, such as water isolation, electrolyte isolation, oxygen isolation, low temperature maintenance and so on.

Feasible suggestions:

You can wear plastic gloves during exercise to prevent sweat from soaking and expanding corrosion.

You can exercise at low temperature in winter, and use dumbbells in vacuum bags at other times.