C5218-EH C5218-1/2H銅合金沖壓加工
Cu Zn40 Pb German standard / DIN 17660, Kupfer-Zinn (Messinge) SS 5163, ingen tillg nglighet
Cu Zn40 Pb2 German standard / DIN 17660, Kupfer-Zinn (Messinge) SS 5168, ingen tillg nglighet
Cu Sn4 German standard / DIN 17662, Zinnbronzen Cu Sn4
LM’s comparison list between different
norms from Copper alloys
采用傳統Tafel 擬合計算得出腐蝕速率。與未微合金化的錳黃銅相比,鋯微合金化的錳黃銅腐蝕速率降低了74.5%,說明其電化學耐蝕性更好。
摩擦磨損性能
通過錳黃銅在室溫下的濕摩擦系數隨磨損時間變化曲線可以看出,未合金化和鋯微合金化的濕摩擦系數變動幅度均較小,都有較優的耐磨性能。但是鋯微合金化的錳黃銅具有更低的平均摩擦系數(0.0254),與未合金化的錳黃銅(0.0315)相比降低了19.3%。
通過錳黃銅的磨痕形貌可以看出,摩擦後的表面特征有如下幾點︰
ヾ沿滑動方向上存在著明顯的犁溝,犁溝深且多;
ゝ犁溝旁邊均出現了部分承載面。說明該區域在摩擦力的作用下發生了塑性變形,但沒有發現裂紋,表明無脆性斷裂現象 [3] 。
力學性能
通過鑄態錳黃銅的拉伸性能可以看出,微量元素鋯的加入,使錳黃銅的抗拉強度提高5.5%,屈服強度提高了24.2%,但是伸長率降低了6.5%。這是由于鋯在錳黃銅中起到細晶強化的作用,而位錯增強導致了合金塑性降低,伸長率也會相應的減小。
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.