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7075鋁合金

7075 是一種鋁合金,以做為合金元素。具有良好的疲勞強度以及好的加工性,但是不可焊接。跟其他合金比起來,其對抵抗腐蝕的能力也較弱。

常見的型號有: 7075-07075-T67075-T651

基本性質

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7075的密度為2.81 克/毫升 (0.102 磅/立方吋),楊氏模數 71.7 GPa,抗拉強度 572 MPa,蒲松比 0.33

7075 基底以外的金屬添加百分比:

  • Zn:5.1-6.1 %
  • Mg:2.1-2.9 %
  • Cu:1.2-2.0 %
  • Si:0.40 %
  • Fe: 0.50 %
  • Cr:0.18-0.28 %
  • Mn:0.30 %
  • Ti:0.20 %


7075主要用途

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航空固定装置,卡车,塔式建筑,船,管道及其他需要有强度、可焊性和抗腐蚀性能的建筑上的应用的领域。如:飞机零部件、齿轮和轴、熔丝零件、仪表轴和齿轮、导弹零件跳进阀零件、涡轮、钥匙、飞机、航空及国防应用。

7075对应牌号

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国标:7075 GB/T3190--1996    

日标:A7075 JIS H4000-1999 JIS H4080-1999   

非标:76528 IS 733-2001 IS737-2001    

俄标:B95/1950 rocT 4785-1974    

EN:EN AW-7075/AlZn5.5MgCu EN573-3-1994  

德标:AlZnMgCu1.5/3.4365 DIN172.1-1986/w-nr    

法标:7075(A-Z5GU) NFA50-411 NFA50-451    

英标:7075(C77S) BS 1470-1988    

美标:7075/A97075 AA/UNS

機械性質

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7075的機械性質在很大程度上取決於回火的材料[1]

7075-0

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7075-0,抗拉強度40,000 psi (276 MPa),降伏強度21,000 psi (145 MPa),伸長率9-10%。

7075-T6[2]

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7075-T6,抗拉強度74,000-78,000 psi (510-538 MPa),降伏強度63,000-69,000 psi (434-476 MPa),伸長率5-8%,E=72GPa, v=0.33。

7075-T731

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7075-T651,抗拉強度 67,000-78,000 psi (462-538 MPa),降伏強度54,000-67,000 psi (372-462 MPa),伸長率3-9%。

應用

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7075廣泛用於飛機結構上,像是機翼機身[3]。7075強度高、重量輕的特性也應用在其他領域, 攀岩設備及自行車零件普遍用了7075鋁合金,自行車產業使用7075和6061鋁合金。

參見

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註解

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  1. ^ 7075 data sheet (pdf), accessed October 13, 2006
  2. ^ http://www.aofeng99.com/Pro_lc/Product_View.asp?Id=5233 Archive.is存檔,存档日期2013-04-24 .pdf
  3. ^ Archive.is的[https://archive.today/20130424221954/http://www.aofeng99.com/Pro_lc/Product_View.asp?Id=5233 存檔,存档日期2013-04-24
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7075鋁合金
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