Manganese content increased, weakening the corrosion resistance of steel, reduce the welding performance.
锰量增高，削弱钢的抗腐蚀才能，降低焊接性能。
In order to enhance the corrosion resistance of steel bars, the epoxy coated ones are used as non-prestressing reinforcement.
并且为使非预应力钢筋具有与预应力纤维塑料筋匹配的防腐性能，采用先进的环氧涂层钢筋作为非预应力筋。
Chromium can improve the oxidation resistance and corrosion resistance of steel, so it is an important alloying element in stainless steel and heat-resistant steel.
铬又能进步钢的抗氧化性和耐腐蚀性，因此是不锈钢，耐热钢的重要合金元素。
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