C18045-ESH铜合金材料/材质保书铜合金

复杂黄铜的组织，可根据黄铜中加入元素的“锌当量系数”来推算。因为在铜锌合金中加入少量其他合金元素，通常只是使Cu-Zn状态图中的α/(α+β)相区向左或向右移动。所以特殊黄铜的组织，通常相当于普通黄铜中增加或减少了锌含量的组织。例如，在Cu-Zn合金中加入1%硅后的组织，即相当于在Cu-Zn合金中增加10%锌的合金组织。所以硅的“锌当量”为10。硅的“锌当量系数”zui大，使Cu-Zn系中的α/(α+β)相界显著移向铜侧，即强烈缩小α相区。镍的“锌当量系数”为负值，即扩大α相区。
特殊黄铜中的α相及β相是多元复杂固溶体，其强化效果较大，而普通黄铜中的α及β相是简单的Cu-Zn固溶体，其强化效果较低。虽然锌当量相当，多元固溶体与简单二元固溶体的性质是不一样的。所以，少量多元强化是提高合金性能的一种途径。
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Cu Sn4  German standard / DIN 17662, Zinnbronzen  Cu Sn4
LM’s comparison list between different
norms from Copper alloys
Please read below on the wished for trade-name in the left hand column, and get it translated into LM-language on the right-hand
column. The right hand column with our name is either identical in composition or a fully replaceable alloy with only minor differences.
The column in the middle states the norm and its country of origin.
With no marks in front of LM’s alloy = alloy is identical, with this sign “~” = alloy is very similar, fully replaceable.
Product name Country of origin LM’s trade name by or order/inquiry
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