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彈(dan)性(xing)(xing)(xing)(xing)(xing)合金(jin)是精(jing) 密合金(jin)的(de)一類(lei)，用于制作精(jing) 密儀器儀表(biao)中(zhong)(zhong)彈(dan)性(xing)(xing)(xing)(xing)(xing)敏感元件(jian)、儲能元件(jian)和頻率(lv)元件(jian)等彈(dan)性(xing)(xing)(xing)(xing)(xing)元件(jian)。除了具有(you)良好的(de)彈(dan)性(xing)(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)(xing)能之(zhi) 外，還(huan)具有(you)無磁性(xing)(xing)(xing)(xing)(xing)、微塑(su)性(xing)(xing)(xing)(xing)(xing)變形抗(kang)力(li)高、硬度高、 電阻率(lv)低、彈(dan)性(xing)(xing)(xing)(xing)(xing)模量(liang)(liang)溫(wen)度系(xi)數小、內耗小等性(xing)(xing)(xing)(xing)(xing)能。 彈(dan)性(xing)(xing)(xing)(xing)(xing)合金(jin)包括高彈(dan)性(xing)(xing)(xing)(xing)(xing)合金(jin)和恒彈(dan)性(xing)(xing)(xing)(xing)(xing)合金(jin)。前者(zhe)彈(dan)性(xing)(xing)(xing)(xing)(xing) 高，滯彈(dan)性(xing)(xing)(xing)(xing)(xing)效應低，耐熱性(xing)(xing)(xing)(xing)(xing)好;后(hou)者(zhe)在一定(ding)溫(wen) 度范圍內彈(dan)性(xing)(xing)(xing)(xing)(xing)模量(liang)(liang)幾乎(hu)不隨溫(wen)度變化(hua)，又(you)稱為“艾 林瓦 (Elinvar) 合金(jin)”。彈(dan)性(xing)(xing)(xing)(xing)(xing)合金(jin)一般在真空(kong)(kong)中(zhong)(zhong) 冶煉，半成(cheng)品或成(cheng)品亦多在真空(kong)(kong)或保護性(xing)(xing)(xing)(xing)(xing)氣氛(fen)中(zhong)(zhong)進 行熱處理。