Signs of a gradual recovery in the materials sector of the S&P 500 has hinged upon a slow economic recovery in the U.S. and China. Exchange traded funds tracking this sector are an affordable, risk-adjusted method of gaining exposure to these equities.

S&P Capital IQ lifted its view on the Materials sector of the S&P 500 Index from a negative stance to a neutral one, citing an expected recovering in global economics in 2013.

“Furthermore, the growing demand from emerging markets for metals and mining products should drive the increase. One way to gain exposure to this space is through ETFs, which can provide diversification in ways where individual equities fall short,” S&P said in a recent note.

S&P Capital is positive on the diversified chemicals firms, which can be accessed through the iShares Dow Jones U.S. Basic Materials Sector Index Fund (NYSEArca: IYM). The research firm has upgraded this ETF to Marketweight, along with the Vanguard Materials Index Fund (NYSEArca: VAW). IYM gives the top holdings to chemical companies, while VAW gives 19.3% to chemical companies. VAW is the least expensive ETF with an expense ratio of 0.14%. [Why You Should Pay Attention to Materials ETFs]

“Fundamentals for diversified chemicals, the largest sub-industry in the sector, are positive, according the S&P Capital IQ equity analysts. We think the decline in U.S. natural gas prices relative to global crude oil prices has improved the feedstock cost competitiveness of the U.S. petrochemical industry versus other global regions, such as Europe, thus helping boost U.S. industry exports,” said S&P Capital IQ. [What Materials, Copper ETFs are Saying About the Market]