Ni70Cr30yog ib qho nickel-chromium alloy (NiCr alloy) uas muaj kev tiv thaiv siab, zoo oxidation kuj thiab zoo heev daim ntawv stability. Nws yog qhov tsim nyog rau kev siv ntawm qhov kub txog li 1250 ° C, thiab tuav lub neej kev pabcuam zoo dua piv rau Hlau chromium alumium alloys.
Tej daim ntawv thov rauNi70Cr30yog cov khoom siv hluav taws xob cua sov hauv cov khoom siv hauv tsev, cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob (wirewound resistors, hlau zaj duab xis resistors), tiaj tus hlau, ironing tshuab, dej rhaub, yas molding tuag, soldering hlau, hlau sheathed tubular ntsiab lus thiab cartridge ntsiab.
Muaj pes tsawg leeg%
C | P | S | Mn | Si | Cr | Ni | Al | Fe | Lwm yam |
Max | |||||||||
0.03 ib | 0.02 ib | 0.015 ib | 0.60 ib | 0.75-1.60 Nws | 28.0-31.0 Nws | Bal. | Max 0.50 | Max 1.0 | - |
Hom Lub cev muaj zog
Qhov ceev (g / cm3) | 8.1 |
Hluav taws xob tiv taus ntawm 20ºC (mm2 / m) | 1.18 |
Coefficient ntawm thermal expansion | |
Kub | Coefficient ntawm Thermal Expansion x10-6 / ºC |
20 ºC - 1000ºC | 17 |
Tshwj xeeb kub muaj peev xwm | |
Kub | 20ºC tso |
J/gK | 0.46 ib |
Melting point (ºC) | 1380 |
Max nruam khiav hauj lwm kub hauv huab cua (ºC) | 1250 |
Cov khoom sib nqus | tsis sib nqus |
Temperature Factors Ntawm Hluav Taws Xob Resistivity | |||||
20ºC tso | 100ºC | 200ºC | 300ºC | 400ºC | 600ºC |
1 | 1.006 ib | 1.012 ib | 1.018 Nws | 1.025 Nws | 1.018 Nws |
700ºC | 800ºC | 900 ºC | 1000ºC | 1100ºC | 1300ºC |
1.01 Nws | 1.008 Nws | 1.01 Nws | 1.014 ib | 1.021 ib | - |
Style khoom
Alloys npe | Hom | Dimension | ||
Ni70Cr30W | Hlau | D = 0.03mm ~ 8mm | ||
Ni70Cr30R | Ribbon | W = 0.4 ~ 40 | T = 0.03 ~ 2.9 hli | |
Ni70Cr30S | Sawb | W = 8 ~ 250mm | T = 0.1 ~ 3.0 | |
Ni70Cr30F | Ntawv nyiaj | W = 6 ~ 120mm | T = 0.003–0.1 | |
Ni70Cr30B | Bar | Dia = 8 ~ 100mm | L = 50 ~ 1000 |