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加拿大Noranda Mines公司研制了ZA8, ZA12和ZA27锌基铸造合金。这类合金成本低,铸造性能好,机械性能和机加工性能均理想,应用范围广,既可砂型铸造,也可压铸。有时其性能可相当于铝合金。这三种合金是在ILZRO-12合金(含铝12％、铜0 .75％和镁0.015％)基础上研制成功的。室温下这类铸造合金的正常机械和物理性能如表1。由表可知这些新型铸造合金是抗拉强度高、布氏硬度大及熔点低。表2为这些合金的标准性能与铜、LM25M铝合金及灰口铁的比较。ZA8与ZA12、ZA27比较,冷凝温度范围最小,
Noranda Mines Canada has developed ZA8, ZA12 and ZA27 zinc-based foundry alloys. These alloys are low cost, good casting performance, ideal mechanical properties and machinability, wide range of applications, both sand casting and die-casting. Sometimes the performance can be equivalent to aluminum. All three alloys were successfully developed on the basis of ILZRO-12 alloy (aluminum 12%, copper 0.75% and magnesium 0.015%). The normal mechanical and physical properties of such cast alloys at room temperature are shown in Table 1. From the table shows that these new cast alloy is high tensile strength, Brinell hardness and low melting point. Table 2 compares the standard performance of these alloys with that of copper, LM25M aluminum and gray iron. ZA8 and ZA12, ZA27 comparison, the smallest condensation temperature range,