This week, 3 Metals & Mining stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, Carpenter Technology Corporation’s (CRS) rating worsens to a D from the company’s C rating a week ago. Carpenter Technology Corporation makes and distributes specialty metals and alloys. The company also gets F’s in sales growth, earnings revisions, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of CRS stock.

BHP Billiton Plc Sponsored ADR (BBL) declines this week from a D to a F. BHP Billiton Plc Sponsored ADR is a natural resources company that is engaged in the petroleum, aluminum, base metals, iron ore, diamonds, specialty products, stainless steel materials, manganese, metallurgical coal, and energy coal sectors. The company also gets F’s in sales growth, operating margin growth, earnings growth, and earnings revisions. For more information, get Portfolio Grader’s complete analysis of BBL stock.

TimkenSteel Corp (TMST) slips from a C to a D this week. The company also gets F’s in sales growth, operating margin growth, earnings growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of TMST stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.