NEW YORK ( TheStreet) -- The economically sensitive business of aluminum has taken a significant toll on Alcoa ( AA). Despite the company's strong fundamentals, the struggles caused by weak aluminum prices have been too much for Alcoa to overcome. But better days are ahead.Not only does the company expect a 6% rebound in demand for aluminum, but the stock is currently undervalued relative to long-term growth potential. And with the company expected to report on its fourth quarter on Tuesday, investors would do well to buy the stock ahead of a market still filled with doubt. The company is expected to post earnings of 6 cents per share, which is 1 penny lower than estimates from three months ago. Revenue is expected to arrive at $5.64 billion. Although pessimism among analysts remains, investors have begun to realize that the situation for Alcoa can't possibly get any worse. For instance, in its third-quarter report, the company posted a loss of $143 million from continuing operations. This included a payout from an environmental lawsuit totaling $175 million. When excluding one-time items, its earnings reached $32 million or 3 cents per share. Despite the difficult macro climate, the company still managed to generate $5.8 billion in revenue -- better than analysts' estimates of $5.54 billion. The prolonged weakness in the price of aluminum, which has declined by 5% from since the second quarter and by 17% annually, has hurt its revenue growth. However, that Alcoa was able to beat on both its top and bottom lines shows how the company continues to make the best out of a bad situation. And its commitment toward return value to shareholders can't be understated. And it seems that investors have begun to appreciate this fact as shares have risen over 14% off the mid-November lows. During the conference call, investors should expect more clarity regarding aluminum prices and the outlook for the year. Management has maintained the 6% and 7% improvement in demand for most of 2012. A slight uptick would be a welcome signal. Management also have spoken favorably about the automotive and aerospace industries where companies such as Ford ( F) and Boeing ( BA) have started to migrate toward using aluminum in their vehicles and jets.