By Carla Mozee, MarketWatch

LONDON (MarketWatch) -- European stocks rose Tuesday, with major indexes starting the second quarter with gains as data showed the euro-zone's manufacturing sector remains on a path to recovery.

The Stoxx Europe 600 finished up 0.6% at 336.35, adding to an advance on Tuesday that left the benchmark up 1.8% for the first quarter. Tuesday's best price performer was Metso Oyj , surging 20% after the Finnish maker of oil and mining equipment said it's considering a merger proposal from Scottish engineering firm Weir Group .

The markets retained gains after trading began in the U.S., with stocks there rallying after U.S. manufacturers said business picked up pace slightly in March, and that they expect an improvement in demand during the spring season. The S&P 500 Index (SPX) hit its highest intraday level since March 21.

European stocks opened higher after Asian markets settled with gains. HSBC's monthly Chinese manufacturing reading fell for a third straight month in March, conflicting with China's official PMI, which signaled an expansion in the factory sector. But some analysts said much of the data reflect economic restructuring by China as it seeks more-sustainable growth.

In its look at the euro zone, market-research firm Markit reported a final March reading of 53.0 for its manufacturing Purchasing Managers' Index, unchanged from a previous estimate. French manufacturing returned to expansion with a level of 52.1, compared with 49.7 in February -- the strongest reading since June 2011.

France's CAC 40 settled up by 0.8% at 4,426.72, the index's s highest closing level since September 2008, according to FactSet data. Leading price performers on the index were shares of Alstom SA , up by 8.1% after the engineering conglomerate said it sold part of its steam-power business to investment fund Triton for an enterprise value of roughly 730 million euros ($1 billion).

"While the [euro-zone] survey paints a picture of a manufacturing recovery that is broad-based, with output rising in all countries surveyed for the second month running, the slight easing in the rate of new-order inflows raises the risk of production growth weakening further in April," said Chris Williamson, chief economist at Markit, in a statement.

Separately, the unemployment rate in the euro zone was 11.9% in February, said Eurostat, a result that was slightly better than analyst estimates of a 12% reading.

The U.K.'s FTSE 100 scaled higher by 0.8% to end at 6,652.61, with Aberdeen Asset Management PLC shares rising 6.7% as the company said it's found more ways to cut costs. Meanwhile, BHP Billiton PLC (BHP) picked up 2.1% as the mining heavyweight reportedly considers the sale of non-core assets.

Germany's DAX 30 index rose 0.5% to 9,603.71.

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