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铝线电阻表

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线径负公差正公差标称电阻最小电阻最大电阻0.2(0.004)0.0040.88789370.9245040610.8534157060.21(0.004)0.0040.805345760.8451100060.7755207450.22(0.004)0.0040.7337964470.7683233750.7078234220.23(0.004)0.0040.6713751990.701545640.648618380.24(0.004)0.0040.6165928480.6431099690.5965423950.25(0.004)0.0040.5682519680.5916825990.5504951950.26(0.004)0.0040.5253808880.5461860520.5095808660.27(0.004)0.0040.4871844720.5057422290.4730639350.28(0.004)0.0040.453006990.4696297260.4403360940.29(0.004)0.0040.4223037810.4372514380.4108906940.3(0.004)0.0040.3946194220.4081097160.3843030210.31(0.004)0.0040.3695707390.3817871330.3602148970.32(0.004)0.0040.3468334770.3579314490.338322550.33(0.004)0.0040.3261317540.3362437680.3183669910.34(0.004)0.0040.3072296540.3164691290.3001263180.35(0.004)0.0040.2899244740.2983889770.2834095250.36(0.004)0.0040.2740412660.28181510.2680514730.37(0.004)0.0040.25942840.2680514730.2539088050.38(0.004)0.0040.2459539340.2539088050.2408565810.39(0.004)0.0040.2335026170.2408565810.2287855140.4(0.005)0.0050.2219734250.2287855140.2165264320.41(0.005)0.0050.2112775020.2175996720.2062171460.42(0.005)0.0050.201336440.2072145680.1966269790.43(0.005)0.0050.1920808440.1975555580.187690570.44(0.005)0.0050.1834491120.1885564990.179349820.45(0.005)0.0050.175386410.1801586110.1715529430.46(0.005)0.0050.16784380.1723095150.1642536620.47(0.005)0.0050.1607774920.1649624150.1574105180.48(0.005)0.0050.1541482120.1580753980.1509862810.49(0.005)0.0050.147920650.1516108360.1449474460.5(0.005)0.0050.1420629920.1455348720.139263790.51(0.005)0.0050.1365465130.1398169720.1339079950.52(0.005)0.0050.1313452220.1349541470.1288553220.53(0.005)0.0050.1264355570.1298427150.1240833190.54(0.005)0.0050.1217961180.1250162730.1195715780.55(0.005)0.0050.1174074310.1204540220.1153015110.56(0.006)0.0060.1132517480.1161370270.1108633770.57(0.006)0.0060.1093128590.1120480170.1070473690.58(0.006)0.0060.1055759450.1081712190.1034250490.59(0.006)0.0060.1020274290.1044921960.0999835260.6(0.006)0.0060.0986548560.1009977220.0967109650.61(0.006)0.0060.0954467830.0980004310.0935964860.62(0.006)0.0060.0923926850.0948239670.090630067铝漆包线电阻表电阻=温度系数*1/电阻率/截面积0.63(0.006)0.0060.0894828620.0917994750.087802470.64(0.006)0.0060.0867083690.0889174110.0851051670.65(0.006)0.0060.0840609420.0861689720.0825302740.66(0.006)0.0060.0815329390.0835460220.0800704940.67(0.006)0.0060.0791172820.0810410370.0777190660.68(0.006)0.0060.0768074140.0786470470.0754697190.69(0.006)0.0060.0745972440.0763575910.0733166290.7(0.006)0.0060.0724811180.0741666690.071254380.71(0.007)0.0070.0704537750.0722744720.0690848240.72(0.007)0.0070.0685103160.0702557320.067197350.73(0.007)0.0070.0666461780.0683204060.0653861840.74(0.007)0.0070.06485710.066463960.0636472670.75(0.007)0.0070.0631391080.0646821650.0619768080.76(0.007)0.0070.0614884830.0629710730.060371260.77(0.007)0.0070.0599017510.061326990.0588273020.78(0.007)0.0070.0583756540.0597464640.0573418240.79(0.007)0.0070.0569071430.058226260.0559119090.8(0.008)0.0080.0554933560.0567633470.0543999180.81(0.008)0.0080.0541316080.0554933560.0530779770.82(0.008)0.0080.0528193750.0541316080.0518036420.83(0.008)0.0080.0515542870.0528193750.0505746550.84(0.008)0.0080.050334110.0515542870.049388890.85(0.008)0.0080.0491567450.050334110.0482443420.86(0.008)0.0080.0480202110.0491567450.0471391250.87(0.008)0.0080.0469226420.0480202110.0460714560.88(0.008)0.0080.0458622780.0469226420.0450396530.89(0.008)0.0080.0448374550.0458622780.0440421280.9(0.009)0.0090.0438466020.0448374550.0429826510.91(0.009)0.0090.0428882360.0438466020.0420523180.92(0.009)0.0090.041960950.0428882360.0411518670.93(0.009)0.0090.0410634150.0420523180.040280030.94(0.009)0.0090.0401943730.0411518670.0394356080.95(0.009)0.0090.0393526290.040280030.0386174640.96(0.009)0.0090.0385370530.0394356080.0378245190.97(0.009)0.0090.037746570.0386174640.0370557480.98(0.009)0.0090.0369801620.0378245190.0363101780.99(0.009)0.0090.0362368620.0370557480.0355868861(0.010)0.0100.0355157480.0363101780.0348159471.01(0.010)0.0100.0348159470.0355868860.0341366281.02(0.010)0.0100.0341366280.0348849920.0334769991.03(0.010)0.0100.0334769990.0342036610.0328363051.04(0.010)0.0100.0328363050.0335420970.032213831.05(0.010)0.0100.032213830.0328995430.0316088891.06(0.010)0.0100.0316088890.0323987010.031020831.07(0.010)0.0100.031020830.031788570.030449031.08(0.010)0.0100.030449030.0311955130.0298928951.09(0.010)0.0100.0298928950.0306188980.0293518581.1(0.010)0.0100.0293518580.0300581240.0288253781.11(0.010)0.0100.0288253780.0295126160.0283129371.12(0.011)0.0110.0283129370.0289818250.0277648771.13(0.011)0.0110.027814040.0284652250.0272803341.14(0.011)0.0110.0273282150.0279623160.0268083641.15(0.011)0.0110.0268550080.0274726170.0263485381.16(0.011)0.0110.0263939860.0269956710.0259004421.17(0.011)0.0110.0259447350.0265310380.025463681.18(0.011)0.0110.0255068570.0260782990.0250378741.19(0.011)0.0110.0250799720.0256370490.0246226591.2(0.011)0.0110.0246637140.0252069050.0242176881.21(0.011)0.0110.0242577340.0248289640.0238226261.22(0.011)0.0110.0238616960.0244189140.0234371531.23(0.011)0.0110.0234752780.0240189390.0230609611.24(0.011)0.0110.0230981710.0236287110.0226937541.25(0.013)0.0130.0227300790.0232479160.0222645681.26(0.013)0.0130.0223707160.0228762520.0219161451.27(0.013)0.0130.0220198080.0225134310.0215758371.28(0.013)0.0130.0216770920.0221591730.0212433951.29(0.013)0.0130.0213423160.0218132120.0209185771.3(0.013)0.0130.0210152360.021475290.0206011521.31(0.013)0.0130.0206956170.0211451590.0202908981.32(0.013)0.0130.0203832350.0208225830.0199876011.33(0.013)0.0130.0200778720.0205073330.0196910531.34(0.013)0.0130.0197793210.0201991880.0194010561.35(0.013)0.0130.0194873790.0198979370.0191174191.36(0.013)0.0130.0192018530.0196033750.0188399561.37(0.013)0.0130.0189225570.0193153060.0185684911.38(0.013)0.0130.0186493110.019033540.0183028511.39(0.013)0.0130.0183819410.0187578950.018042871.4(0.014)0.0140.018120280.0184881950.0177632391.41(0.014)0.0140.0178641660.01827660.0175146311.42(0.014)0.0140.0176134440.0180171770.0172712061.43(0.014)0.0140.0173679630.0177632390.0170328211.44(0.014)0.0140.0171275790.0175146310.0167993371.45(0.014)0.0140.0168921510.0172712060.0165706221.46(0.014)0.0140.0166615440.0170328210.0163465461.47(0.014)0.0140.0164356280.0167993370.0161269841.48(0.014)0.0140.0162142750.0165706220.0159118171.49(0.014)0.0140.0159973640.0163465460.0157009271.5(0.014)0.0140.0157847770.0161269840.0154942021.51(0.014)0.0140.0155763990.0159118170.0152915331.52(0.014)0.0140.0153721210.0157009270.0150928151.53(0.014)0.0140.0151718350.0154942020.0148979451.54(0.014)0.0140.0149754380.0152915330.0147068251.55(0.014)0.0140.014782830.0150928150.014519361.56(0.014)0.0140.0145939140.0148979450.014335456

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常用金属电阻率表

常用金属电阻率表

金属电阻率及其温度系数

物质 温度 t/℃ 电阻率 Ω..m 电阻温度系数 aR/℃-1

银 20 1.586 0.0038(20℃)

铜 20 1.678 0.00393(20℃)

金 20 2.40 0.00324(20℃)

铝 20 2.6548 0.00429(20℃)

钙 0 3.91 0.00416(0℃)

铍 20 4.0 0.025(20℃)

镁 20 4.45 0.0165(20℃)

钼 0 5.2

铱 20 5.3 0.003925(0℃~100℃)

钨 27 5.65

锌 20 5.196 0.00419(0℃~100℃)

钴 20 6.64 0.00604(0℃~100℃)

镍 20 6.84 0.0069(0℃~100℃)

镉 0 6.83 0.0042(0℃~100℃)

铟 20 8.37

铁 20 9.71 0.00651(20℃)

铂 20 10.6 0.00374(0℃~60℃)

锡 0 11.0 0.0047(0℃~100℃)

铷 20 12.5

铬 0 12.9 0.003(0℃~100℃)

镓 20 17.4 铊 0 18.0

铅 20 20.684 (0.0037620℃~40℃)

锑 0 39.0

钛 20 42.0

锰 23~100 185.0

金的熔点:1064.63 沸点:2807

银的熔点:961.93 沸点:2213

铜的熔点:1083.4 沸点:2567

铁的熔点:1535 沸点:2750

材料电阻率表

材料电阻率表

材料电阻率表

以下是部分材料的电阻率：

• 银在20℃的电阻率是1.5860 Ω·mm^2/m，温度系数为0.0038℃^(-1)。

• 铜在20℃的电阻率是1.6780 Ω·mm^2/m，温度系数为0.00393℃^(-1)。

• 金在20℃的电阻率是2.400 Ω·mm^2/m，温度系数为0.00324℃^(-1)。

• 铝在20℃的电阻率是2.6548 Ω·mm^2/m，温度系数为0.00429℃^(-1)。

• 钙在0℃的电阻率是3.91 Ω·mm^2/m，温度系数为0.00416℃^(-1)。

• 铍在20℃的电阻率是4.0 Ω·mm^2/m，温度系数为0.025℃^(-1)。

• 镁在20℃的电阻率是4.45 Ω·mm^2/m，温度系数为0.0165℃^(-1)。

不同材料的电阻率各有不同，以上数据仅供参考，具体可查阅专业金属手册。

铝材 电阻率 标准(一)

铝材 电阻率 标准(一)

铝材 电阻率 标准(一)

铝材电阻率标准

简介

• 铝材电阻率是衡量铝材导电性能的重要指标之一。

• 电阻率是指材料在单位长度和单位面积内导电时的电阻大小。

为什么要了解铝材电阻率标准？

• 铝材广泛应用于电子、航空、建筑等领域，了解铝材电阻率标准可以帮助我们选择合适的材料。

• 合理选择电阻率可提高产品的电导性能，降低能耗。

铝材电阻率标准的分类

1. 纯铝材

– 纯铝的电阻率为 × 10^-8 Ω·m。

– 电阻率较低，适用于对导电性能要求高的场合。

– 常用于电力传输、电器制造等领域。

2. 铝合金

– 铝合金的电阻率因合金成分不同而有所差异。 – 一般在 × 10^-8 Ω·m至 × 10^-8 Ω·m之间。

– 电阻率较纯铝略高，但优于许多其他金属。

– 铝合金具有较好的强度和耐腐蚀性，广泛用于航空航天、汽车、建筑等领域。

如何选择合适的铝材电阻率标准？

1. 根据导电性能要求

– 如果需要较高的导电性能，可选择纯铝材。

– 如果导电要求一般，可以选择铝合金。

– 注意根据实际应用场景综合考虑其他性能指标，如强度、耐腐蚀性等。

2. 根据成本考虑

– 纯铝材价格较低，铝合金价格相对更高。

– 若成本限制较大，可以选择合适的铝合金材料。

总结

• 铝材电阻率是衡量铝材导电性能的重要指标。

• 纯铝材的电阻率较低，适用于高导电性能要求的场合。

• 铝合金的电阻率介于纯铝和其他金属之间，具有较好的强度和耐腐蚀性。 • 在选择铝材电阻率标准时，应根据实际需求和成本因素进行综合考虑。

以上就是关于铝材电阻率标准的相关内容，希望对您有所帮助！

常用导体电阻率

常用导体电阻率

常用金属导体在20℃时的电阻率

材料电阻率(Ω m)

(1)银 1.65 ×10-8

(2)铜 1.75 ×10-8

(3)金 2.40×10-8

(4)铝 2.83 ×10-8

(5钨 5.48 ×10-8

(6)铁 9.78 ×10-8

(7)铂 2.22 ×10-7

(8)锰铜 4.4 ×10-7

(9)汞 9.6 ×10-7

(10)康铜 5.0 ×10-7

(11)镍铬合金 1.0 ×10-6

(12)铁铬铝合金1.4 ×10-6

(13) 铝镍铁合金1.6 ×10-6

可以看出金属的电阻率较小，合金的电阻率较大，非金属和一些

金属氧化物更大，而绝缘体的电阻率极大。锗、硅、硒、氧化铜、硼

等的电阻率比绝缘体小而比金属大，我们把这类材料叫做半导体

(semiconductors)。 总结：常态下（由表可知）导电性能最好的依次是银、铜、铝，这三种材料是最常用的，常被用来作为导线等，其中铜用的最为广，几乎现在的导线都是铜的（精密仪器，特殊场合除外）铝线由于化学性质不稳定容易氧化已被淘汰。由于铝密度小，取材广泛，且价格比铜便宜，目前被广泛用于电力系统中传输电力的架空输电线路。为解决铝材刚性不足缺陷，一般采用钢芯铝绞线，即铝绞线内部包有一根钢线，以提高强度。银导电性能最好但由于成本高很少被采用，只有在高要求场合才被使用，如精密仪器、高频震荡器、航天等。顺便说下金，在某些场合仪器上触点也有用金的，那是因为金的化学性质稳定故采用，并不是因为其电阻率小所至。