- 规格：
- 齐全
- 成分：
- 标准
- 密度：
- 标准
牌号：BZn18-26标准：GB/T 4423-1992
特性及适用范围：
为结构铜镍,合金其外表具有美丽的银白色，俗称德银(本来是中国银)，这种合金具有高的强度和耐蚀性,可塑性好，在热态及冷态下均能很好地承受压力加工，可切削性不好，焊接性差，弹性优于QSn6.5-0.1。
化学成份：
铜 Cu ：62.0～65.0
镍+钴 NiCo：13.5～16.5
锌 Zn：余量
铅 Pb：≤0.02
铅 Pb：≤0.02
硼 P：≤0.005
铁 Fe：≤0.5
锰 Mn：≤0.3
硅 Si ：≤0.15
铍 Sb ：≤0.002
硫 S ：≤0.01
砷 As ：≤0.010
碳 C：≤0.03
铋 Bi：≤0.002
镁 Mg：≤0.05
注：≤0.9(杂质)
力学性能：
抗拉强度 σb (MPa)：≥440
伸长率 δ10 (％)：≥5
注 ：棒材的纵向室温拉伸力学性能
试样尺寸：直径或对边距离5～12
热处理规范：铸造温度1170℃;退火温度700～750℃;轧制热加工温度950～970℃;消除内应力的低温退火温度250℃。
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