B30镍白铜 点击进入阿里巴巴店铺
B30合金概述
B30铜镍合金具有良好的耐海水、淡水及蒸汽腐蚀性能，是制造各类冷凝器和恒温器管路系统的主要材料，
主要成分为铜基体、３０％ （质量分数，下同）的镍与少量铁、锰。被广泛使用于造船、石油化工、电器、
仪表、医疗器械、日用品、工艺品等领域，并还是重要的电阻及热电偶合金，B30白铜带材在铜合金中，
因B30白铜带材耐蚀性优异，且易于塑型、加工和焊接，广泛用于造船、石油、化工、建筑、电力、精密
仪表、医疗器械、乐器制作等部门作耐蚀的结构件。
白铜简介
白铜是以镍为主要添加元素的铜基合金，呈银白色，有金属光泽，故名白铜。铜镍之间彼此可无限固溶，
从而形成连续固溶体，即不论彼此的比例多少，而恒为α–单相合金。当把镍熔入红铜中，含量超过16%以
上时，产生的合金色泽就变得相对近白如银，镍含量越高，颜色越白，但是，毕竟与铜融合，只要镍含量
比例不超过70%，肉眼都会看到铜的黄色。何况通常白铜中镍的含量一般为25%。
普通白铜：B19白铜 B30白铜
B30镍白铜标准：（GB/T 5231-2001)
B30物理性能 密度8.9g/cm3
B30化学成分
| B30 镍白铜化学成分 | ||||||
| 元素 | 铜 Cu | 镍钴Ni+Co | 锰 Mn | 铁 Fe | 锌 Zn | 镁Mg |
| 质量分数/% | 余量 | 29.00-33.00 | ≤1.2 | ≤0.9 | / | / |
| 元素 | 硅 Si | 磷 P | 铅 Pb | 碳C | 硫S | 杂质 |
| 质量分数/% | ≤0.15 | ≤0.006 | ≤0.05 | ≤0.05 | ≤0.01 | ≤2.3 |
B30力学性能
| B30 镍白铜力学性能 | ||||
| 品种 | 状态 | 直径/mm | 抗拉强度MPa | 伸长率δ10(%) |
| 带材 | M软态 | 0.05-1.20 | ≥380 | ≥20 |
| 硬态Y | ≥550 | ≥3 | ||
| 板材 | M软态 | 0.5-75 | ≥380 | ≥23 |
| 硬态Y | ≥550 | ≥3 | ||
| 热轧 | ≥350 | ≥15 | ||
B30 copper-nickel alloy has good corrosion resistance to seawater, fresh water and steam. It is the main
material for manufacturing various condenser and thermostat piping systems. The main components are
copper matrix, 30% (mass fraction, the same below) nickel and a small amount of iron and manganese.
It is widely used in shipbuilding, petrochemical, electrical appliances, instruments, medical devices, daily
necessities, handicrafts and other fields, and is also an important resistance and thermocouple alloy. B30
white copper strip is in the copper alloy. Because B30 white copper strip has excellent corrosion resistance
and is easy to mold, process and weld, it is widely used in shipbuilding, petroleum, chemical, construction,
power, precision instruments, medical devices, musical instrument production and other departments as
corrosion resistant structural parts.
