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铝铁青铜9-4是一种不含锡的高强度、高冲击韧性的优良铜基耐磨铸铁合金,在机器制造业中颇有前途,用以制造机械设备上的蜗轮,有如下主要优点:1．机械性能好,抗拉强度和延伸率都和钢差不多;2．耐腐蚀性很好,在海水中的耐腐蚀能力比磷青铜、海军黄铜都好得多;3．耐磨性好;4．抗蠕变能力比锡青铜高得多,组织致密,不易渗漏;5．民由于它不含锡,比重较轻(约7．6克/厘米3),成本低,用它代替磷青铜和低锡巴氏合金,不仅可以达到“代锡”的目的,而且还可以节约15%的金属原材料和20~25%的制造成本费用。
Aluminum Bronze 9-4 is a high-strength, high impact toughness, copper-free, wear-resistant cast iron alloy that does not contain tin and is a promising machine tool manufacturer for the manufacture of worm gears on machinery and equipment. It has the following major advantages :1. Good mechanical properties, tensile strength and elongation are similar to steel; 2. Good corrosion resistance, corrosion resistance in seawater than phosphor bronze, naval brass are much better; 3. Good wear resistance; 4. Creep resistance much higher than tin bronze, dense tissue, difficult to leak; 5. Because of its low cost (about 7.6 g / cm 3) and its low cost, it can not only achieve the purpose of “substituting tin” but also save it by replacing it with phosphor bronze and low-tin babbitt 15% of the metal raw materials and 20 ~ 25% of the manufacturing costs.