2 Top Steel Stocks to Consider Buying Now -- and 2 to Avoid

Steel is at the core of the world around us, supporting our buildings, protecting us in our cars, and helping us run our homes in the form of washing machines and refrigerators. Supply and demand play a big part in the price of steel, as with all commodity-driven industries, and that's been a headwind in recent years, largely thanks to China. But there are some steel stocks that managed to thrive even during those difficult times. The steel industry is actually on the upswing right now, lifting the shares of the weakest players along with the strongest. Don't lose sight of the big picture: Stick with leaders like Nucor Corp. (NYSE: NUE) and Steel Dynamics, Inc. (NASDAQ: STLD), but avoid United States Steel Corporation (NYSE: X) and AK Steel (NYSE: AKS).

A little background

Steel is an industrial commodity prized for its mixture of strength and cost. Although it's used throughout modern society, construction is a big piece of the demand equation. For example, you can see the exposed steel beams in some buildings and throughout the heavy construction machines that are used to put those beams in place.

A steel worker in a steel mill
A steel worker in a steel mill

Image source: Getty Images

The interesting thing is that steel's close tie to the construction market is one of the key reasons why supply and demand got out of balance in recent years. China had been growing at double-digit rates for years. Construction made up a huge portion of that growth as the giant nation built cities to accommodate a shift from rural to urban living.

China had little choice but to ramp up the use of steel, which required an increase in its production capacity. With Chinese gross domestic product growth slowing from 14% in 2007 to less than half that total in 2016, demand for steel isn't what it used to be in that country. As a result, it has been selling steel to foreign markets at what some believe are below production costs.

That, in turn, pushed steel prices lower in the United States. Much damage was done during a long steel industry downturn that started after the 2007 to 2009 recession. The U.S. government has been hitting various countries, including China, with steel tariffs to help protect U.S. producers from a glut of cheap steel imports. Getting these protective measures implemented, however, is a slow process. That said, steel prices have moved higher over the last year or so, partly because of the enactment of tariffs, lifting the results and outlook for U.S. steelmakers. (That said, the oversupply issue isn't going away, so you'll want to keep an eye on it.)