很多新客戶對光伏支架的選材不了解，造成方案的不適應(yīng)以及低效，下面我來給你介紹太陽能支架鋼材與鋁材之間的優(yōu)缺點。
Many new customers do not know too much about how to select material of Solar brackets, resulting in the unadaptability of the scheme and inefficiency, below I will introduce you to the advantages and disadvantages between steel and aluminum solar mounting.
①鋼與鋁材料強(qiáng)度方面（Steel and aluminum strength）
太陽能支架一般采用Q235B鋼材與鋁合金擠壓型材6005 T5，強(qiáng)度方面，6005-T5鋁合金大概為Q235 B鋼材的68%-69%，所以一般在強(qiáng)風(fēng)地區(qū), 跨度比較大等情況下,太陽能支架鋼材優(yōu)于鋁合金型材。
The solar mounting material generally adopts Q235B steel and aluminum alloy extruded profile 6005-T5, in terms of strength, 6005-T5 aluminum alloy is about 68%-69% of Q235B steel, so generally in strong wind areas, Solar mounting rail span is relatively large and other situations , steel is better than aluminum alloy profile. In the other words, steel is better for utility project.
②撓度變形方面（Deflection deformation）
在同等條件下，鋁合金型材變形量是鋼材的2.9倍，重量是鋼材的35%，造價方面在同等重量下，鋁材是鋼材的3倍。所以一般在強(qiáng)風(fēng)地區(qū)、跨度比較大、造價方面等條件鋼材優(yōu)于鋁合金型材。
Under the same conditions, the deformation of aluminum alloy profile is 2.9 times that of steel, the weight is 35% of steel, and the cost is 3 times that of steel under the same weight. Therefore, generally in strong wind areas, solar mounting rail span is relatively large, considering cost and other conditions steel is better choice.
③防腐蝕方面（Anti-corrosion aspects）
鋁合金在標(biāo)準(zhǔn)大氣環(huán)境下，處于鈍化區(qū)，其表面形成一層致密的氧化膜，阻礙了活性鋁基體表面與周圍大氣相接觸，故具有非常好的耐腐蝕性，且腐蝕速率隨時間的延長而減小。
Aluminum alloy in the standard atmospheric environment, in the passivation zone, its surface forms a dense oxide film, hindering the surface of the activated aluminum matrix from contacting the surrounding atmosphere, so it has very good corrosion resistance, and the corrosion rate decreases with the extension of time.
鋼材在在標(biāo)準(zhǔn)環(huán)境下，80μm鍍鋅厚度能保證使用20年以上，但在高濕度工業(yè)區(qū)或高鹽度海濱甚至溫帶海水里則腐蝕速度加快，鍍鋅量通常需要達(dá)到100μm以上并且需要每年定期維護(hù)。
In the standard environment, the galvanized thickness of 80μm can be guaranteed to be used for more than 20 years, but in high-humidity industrial areas or high-salinity coastal or even temperate seawater, the corrosion rate is accelerated, and the galvanizing thickness usually needs to reach more than 100μm and requires regular maintenance every year.
④表面處理對比（Surface treatment comparison）
鋁合金型材有很多種表面處理方式，如陽極氧化、化學(xué)拋光等。外表美觀并能適應(yīng)各種強(qiáng)腐蝕作用的環(huán)境。鋼材則一般采用熱浸鍍鋅、表面噴涂、油漆涂層等方式。外觀差于鋁合金型材，在防腐蝕性能方面也差于鋁型材。
There are many surface treatment methods for aluminum alloy profiles, such as anodizing, chemical polishing, etc. Beautiful appearance and can adapt to a variety of strong corrosive environments. Steel generally adopts hot-dip galvanizing, surface spraying, paint coating and other methods. The appearance is worse than that of aluminum alloy profiles, and it is also inferior to aluminum profiles in terms of corrosion resistance.
綜合對比下來，鋁材質(zhì)量輕，防腐蝕性能強(qiáng)，對于有承重要求的屋頂電站/腐蝕性強(qiáng)環(huán)境/化工廠電站等，采用鋁合金做支架比較好。鋼材強(qiáng)度高，承受荷載時撓度變形小，一般用于手里比較大的部件，在大風(fēng)、跨度要求比較大的光太陽能支架電站比較適合。
In comprehensive comparison, aluminum is light in weight and strong in corrosion resistance, and it is better to use aluminum alloy as a bracket for rooftop power stations with load-bearing requirements/corrosive environment/chemical plant power stations. Steel has high strength and small deflection deformation when bearing load, generally used for relatively large parts in hand, and is more suitable for solar bracket power stations with large winds and span requirements.
All in one sentence, for small solar project, choose Aluminum mounting system, easy and quick to install and to save labor cost. For utility solar power project, choose Steel mounting system, designed and manufactured according to project requirements.
晨科深入光伏支架市場已經(jīng)16年，擁有自己的光伏支架加工工廠，以及專業(yè)的技術(shù)團(tuán)隊，或者多項國際認(rèn)證，更多光伏支架解決方案請聯(lián)系我們！
CHIKO SOLAR has been deeply involved in the Solar mounting market for 16 years, we are manufactory, we export by self , we have technical team, also have a number of international certifications. Welcome more solar mounting or OEM solar bracket question consulted us ! please feel free to contact us!
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