Corning (GLW) - Get Report expects to exceed its earnings goals for the first quarter due to strong silicon sales.

The technology glass maker says its preliminary numbers show net income of about 17 cents a share on sales of as much as $1.05 billion for the quarter ended March 31. Analysts had been looking for an 11-cent profit on $1 billion in revenue.

The company says a stronger-than-expected performance from its Dow Corning silicon products division as well as networking equipment sales helped boost the bottom line.

Corning, which reports earnings April 27, also says sales of its fiber optic cable and liquid crystal display glass were in line with its expectations.

Shares rose 43 cents to $11.43, a 4% gain in premarket trading.