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5251 मिश्र धातु अॅल्युमिनियम कॉइल विहंगावलोकन

5251 ॲल्युमिनियम कॉइल ही तुलनेने मजबूत ॲल्युमिनियम कॉइल मालिका आहे 5 मालिका अॅल्युमिनियम मिश्र धातु products. अॅल्युमिनियम मिश्र धातु 5251 नाममात्र समाविष्टीत आहे 2.0% मॅग्नेशियम & 0.30% मॅंगनीज. त्यात चांगली कार्यक्षमता आहे, मध्यम स्थिर शक्ती, उच्च थकवा शक्ती, चांगली वेल्डेबिलिटी, आणि खूप चांगला गंज प्रतिकार, विशेषतः सागरी वातावरणात. यात कमी घनता आणि उत्कृष्ट थर्मल चालकता देखील आहे जी सर्व अॅल्युमिनियम मिश्र धातुंसाठी सामान्य आहे. It is commonly used in sheet, plate and tube form.

Typical Applications Architecture, general sheet metal work, small boats.

गंज प्रतिकार 5251 has the same high resistance to general corrosion as other non heat treatable aluminium alloys. It also has the higher resistance to slightly alkaline conditions common to the 5000 series alloys. The resistance of 5251 to corrosion in marine atmospheres is excellent, exceeding that of 5005, hence the frequent use of 5251 in marine applications such as small boats and dinghies.

The corrosion resistance of aluminium alloys relies on a protective surface oxide film, which when damaged is readily repaired by the rapid reaction between aluminium and oxygen. तथापि, the high reactivity of the base metal can give rapid corrosion if the film cannot be repaired, so aluminium alloys are not suitable for use with reducing media. 5251 can be anodised to improve the corrosion resistance by thickening the protective surface film.

Since aluminium is a reactive metal, it may corrode more quickly when in electrical contact with most other metals. The prediction of galvanic corrosion is complex; please consult Austral Wright Metals for specific advice.