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Aloi nichrome termasuk nikel tulen, aloi NiCr, aloi Fe-Cr-Al dan aloi nikel tembaga.
Aloi krom nikel: Ni80Cr20, Ni70Cr30, Ni60Cr15, Ni35Cr20, Ni30Cr20, nikel tulen Ni200 dan Ni201
Aloi FeCrAl: 0Cr25Al5, 0Cr23Al5, 0Cr21Al4, 0Cr27Al7Mo2, 0Cr21Al6Nb, 0Cr21Al6.
Aloi nikel tembaga: CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi23, CuNi30, CuNi44, Constantan, CuMn12Ni
Aloi Nichrome kami adalah dalam bentuk dawai, gegelung, reben, jalur, kerajang.
Saiz wayar nichrome ialah:
Kawat: 0.018mm-10mm
Reben: 0.05*0.2mm-2.0*6.0mm
Jalur: 0.5*5.0mm-5.0*250mm
Bar: 10-100mm
Nichrome: 80 20
Gred Nichrome: Ni70Cr30,Ni80Cr20, Ni60Cr15, Ni35Cr20, Ni30Cr20
NiCr 80/20 juga dipanggil Chromel A, Cr20Ni80, N8, Nichrome V, HAI - NiCr 80, Tophet A, Resistohm 80, Cronix 80, Protoloy, Aloi A,
MWS-650, Stablohm 650, NCHW1
Ciri-ciri nicr8020:
Kandungan Kimia %: 80.00 Nikel, 20.00 Chrome
Suhu perkhidmatan berterusan maksimum: 1200ºC
Kerintangan: 1.09 mm2Ω /m
Ketumpatan: 8.4g/cm3
Kekonduksian terma: 60.3kj/mhc
Pekali pengembangan haba: 18*10-6/c
Takat lebur: 1400ºC
Pemanjangan: Min 20%
Austenit: Bukan magnet
Prestasi bahan |
Cr10Ni90 |
Cr20Ni80 |
Cr30Ni70 |
Cr15Ni60 |
Cr20Ni35 |
Cr20Ni30 |
|
Komposisi |
Ni |
90 |
Rehat |
Rehat |
55.0~61.0 |
34.0~37.0 |
30.0~34.0 |
Cr |
10 |
20.0~23.0 |
28.0~31.0 |
15.0~18.0 |
18.0~21.0 |
18.0~21.0 |
|
Fe |
≤1.0 |
≤1.0 |
Rehat |
Rehat |
Rehat |
||
Suhu maksimum ℃ |
1300 |
1200 |
1250 |
1150 |
1100 |
1100 |
|
Takat lebur ℃ |
1400 |
1400 |
1380 |
1390 |
1390 |
1390 |
|
Ketumpatan g/cm3 |
8.7 |
8.4 |
8.1 |
8.2 |
7.9 |
7.9 |
|
Kerintangan pada 20 ℃((μΩ·m) |
1.09±0.05 |
1.18±0.05 |
1.12±0.05 |
1.00±0.05 |
1.04±0.05 |
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Pemanjangan semasa pecah |
≥20 |
≥20 |
≥20 |
≥20 |
≥20 |
≥20 |
|
Haba tertentu J/g.℃ |
0.44 |
0.461 |
0.494 |
0.5 |
0.5 |
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Kekonduksian terma KJ/mh℃ |
60.3 |
45.2 |
45.2 |
43.8 |
43.8 |
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Pekali pengembangan garisan a×10-6/ (20~1000 ℃) |
18 |
17 |
17 |
19 |
19 |
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Struktur mikrografik |
Austenit |
Austenit |
Austenit |
Austenit |
Austenit |
||
Sifat magnetik |
Bukan magnet |
Bukan magnet |
Bukan magnet |
Magnet lemah |
Lemah magnetik |
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bentuk |
Saiz(mm) |
wayar |
0.05-7.5 |
joran |
8-50 |
reben |
(0.05-0.35)*(0.5-6.0) |
Strip |
(0.5-2.5)*(5-40) |