Chofaj Nichrome
Nikèl-chromium alyaj (NiCr alyaj) karakterize pa rezistans segondè, bon rezistans oksidasyon ak trè bon estabilite fòm. Li apwopriye pou itilize nan tanperati jiska 1200 degre, epi kenbe yon lavi sèvis siperyè konpare ak alyaj Iron Kwòm aliminyòm.
Aplikasyon tipik pou Ohmalloy109 yo se eleman chofaj elektrik nan aparèy kay, founo endistriyèl ak rezistans (rezistans fil, rezistans fim metal), fè plat, machin ironing, aparèy chofaj dlo, plastik bòdi mouri, soude fè, metal gani eleman tubulaires ak eleman katouch.
|
Klas |
Cr10Ni90 |
Cr20Ni80 |
Cr30Ni70 |
Cr15Ni60 |
Cr20Ni35 |
Cr20Ni30 |
|
|
konpozisyon |
Ni |
90 |
bal |
bal |
55-61 |
34-37 |
30.3-34 |
|
Kr |
10 |
20-30 |
28-31 |
15-18 |
18-21 |
18-21 |
|
|
Fe |
Mwens pase oswa egal a 1 |
Mwens pase oswa egal a 1 |
bal |
bal |
bal |
||
|
tanperati max |
1300 |
1200 |
1250 |
1150 |
1100 |
1100 |
|
|
pwen k ap fonn (degre) |
1400 |
1400 |
1380 |
1390 |
1390 |
1390 |
|
|
dansite |
8.7 |
8.4 |
8.1 |
8.2 |
7.9 |
7.9 |
|
|
rezistans nan 20 |
1.09+/-0.05 |
1.18+/-0.05 |
1.12+/-0.05 |
1+/-0.05 |
1.04+/-0.05 |
||
|
Elongasyon |
Pi gran pase oswa egal a 20 |
Pi gran pase oswa egal a 20 |
Pi gran pase oswa egal a 20 |
Pi gran pase oswa egal a 20 |
Pi gran pase oswa egal a 20 |
||
|
chalè espesifik J/g |
0.44 |
0.461 |
0.494 |
0.5 |
0.5 |
||
|
tèmik conductivitu KJ/mh |
60.3 |
45.2 |
45.2 |
43.8 |
43.8 |
||
|
koyefisyan ekspansyon liy yo |
18 |
17 |
17 |
19 |
19 |
||
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