Chase Brass & Copper S-4 Registration of securities issued in business combination transactions

Exhibit 12.1

Global Brass and Copper Holdings, Inc.

Computation of Ratio of Earnings to Fixed Charges

	Three Months Ended March 31,				Year Ended December 31,
	2013		2012		2012		2011		2010		2009		2008
(in thousands)
Earnings
Income (loss) before provision for income taxes and equity income	$	17,191	$	21,971	$	31,085	$	85,837	$	67,291	$	12,455	$	(118,026	)
Add:
Fixed charges		10,151		10,045		40,918		41,756		26,245		19,455		21,154
Amortization of capitalized interest		9		9		36		—		—		—		—
Distributions from equity investment		—		500		1,000		500		566		2,028		—
Share of pre-tax losses of equity investees for which charges arising from guarantees are included in fixed charges		—		—		—		—		—		—		—
Less:
Capitalized interest		—		—		—		557		—		—		—
Preference security dividend requirements of consolidated subsidiaries		—		—		—		—		—		—		—
Noncontrolling interest in pre-tax income of subsidiaries that have not incurred fixed charges		124		68		466		223		565		132		30
Total Earnings	$	27,227	$	32,457	$	72,573	$	127,313	$	93,537	$	33,806	$	(96,902	)
Fixed Charges
Interest expense	$	9,875	$	9,749	$	39,727	$	40,010	$	25,076	$	18,136	$	20,045
Capitalized interest		—		—		—		557		—		—		—
Estimated interest in rent expense (a)		276		296		1,191		1,189		1,169		1,319		1,109
Total Fixed Charges	$	10,151	$	10,045	$	40,918	$	41,756	$	26,245	$	19,455	$	21,154
Ratio of Earnings to Fixed Charges (b)		2.7		3.2		1.8		3.0		3.6		1.7		—

(a) Interest portion of rental expense is estimated to equal 33% of such expense, which is considered a reasonable approximation of the interest factor.

(b) Earnings were insufficient to cover fixed charges by $118,056 for the year ended December 31, 2008. Accordingly, the ratio of earnings to fixed charges was less than 1:1.