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Beryllium bronze is a kind of beryllium copper alloy containing (Be0.2 ~ 2.75% wt %), of all the beryllium alloy is a kind of, the use of the most widely used in today's world has been more than beryllium 70% of the total consumption. Beryllium bronze is precipitation hardening alloys, after solid solution aging treatment has high strength, hardness, elastic limit and fatigue limit, elastic hysteresis is small, and a corrosion resistant (beryllium bronze alloy in seawater corrosion speed: (1.1 1.4) x 10-2 mm/year. Corrosion depth (10.9 13.8) x 10-3 mm/year.) After corrosion, beryllium bronze alloy strength, elongation, no change in still water can keep more than 40 years, beryllium copper alloy is a submarine cable repeater constructs an irreplaceable material.
在硫酸介质中：铍青铜在小于80%浓度的硫酸中（室温）年腐蚀深度为0.0012-0.1175mm，浓度大于80%则腐蚀稍加快
性能：耐磨、 耐低温、无磁性、高的导电性、冲击无火花等特点。同时还具有较好的流动性和重现精细花纹的能力。由于铍铜合金的诸多优越性能，使其在制造业获得了广泛的应用。
1.中国:QBe2,QBe1.7
2.美国(ASTM):C17200, C17000
3.美国(CDA):172, 170
4.德国(DIN):QBe2, QBe1.7
5.德国(数字系统):2.1247, 2.1245
6.日本:C1720, C1700
铍青铜的用途及性能：高性能铍青铜硬度(HRC)38—43之间，密度8.3g/cm3，含铍1.9%-2.15%，其广泛适用于塑胶注塑成型模具的内镶件、模芯、压铸冲头、热流道冷却系统、导热嘴、吹塑模具的整体型腔、汽车模具、磨耗板等。在
