fabrika fiyat toptan 5251 satılık alaşımlı alüminyum bobin, Çin üretici ve tedarikçiden özel metal alüminyum sac rulo satın alın

5251 alaşımlı alüminyum bobine genel bakış

5251 alüminyum bobin, nispeten güçlü bir alüminyum bobin serisidir. 5 seri alüminyum alaşım Ürün:% s. Alüminyum alaşımı 5251 sözde içerir 2.0% magnezyum & 0.30% manganez. İyi işlenebilirliğe sahiptir, orta statik güç, yüksek yorulma mukavemeti, iyi kaynaklanabilirlik, ve çok iyi korozyon direnci, özellikle deniz ortamlarında. Aynı zamanda tüm alüminyum alaşımlarında ortak olan düşük yoğunluğa ve mükemmel ısı iletkenliğine sahiptir.. It is commonly used in sheet, plate and tube form.

Typical Applications Architecture, general sheet metal work, küçük tekneler.

Korozyon Direnci 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 seri alaşımlar. 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. Yine de, 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.