Hluav taws xob tiv thaiv alloys yog dav siv nyob rau hauv hluav taws xob cua sov, tshwj xeeb tshaj yog NiCr. Nichrome yog npib tsib xee thiab chromium alloy uas feem ntau siv rau hauv kev tsim cov hlau tsis muaj zog vim tias nws qhov kev tiv thaiv siab thiab ruaj khov tiv thaiv oxidation ntawm qhov kub txog li 1250 ° C, yog vim li cas cov hlau tsis kam tiv taus yog qhov zoo rau kev pabcuam hauv qhov chaw huab cua uas lawv raug rau siab thiab cua sov. Vladimir cog ntawm Precision Alloys tau raug tsim cov hlau tsis kam thiab cov cua sov alloys los ntawm nws lub hauv paus. Peb lub zog yog ua cov xov hlau, strips, ribbon thiab ntawv ci, suav nrog NiCr alloys thiab Fe-Cr-Al alloys.
Qib | Ni80Cr20 | Ni70Cr30 | Ni60Cr23 | Ni60Cr15 | Ni35Cr20 | Karma | Evanohm | |
Nominal muaj pes tsawg leeg% | Ni | Bal | Bal | 58.0-63.0 Nws | 55.0-61.0 Nws | 34.0-37.0 Nws | Bal | Bal |
Cr | 20.0-23.0 Nws | 28.0-31.0 Nws | 21.0-25.0 Nws | 15.0-18.0 Nws | 18.0-21.0 Nws | 19.0-21.5 Nws | 19.0-21.5 Nws | |
Fe | ≦ 1.0 | ≦ 1.0 | Bal | Bal | Bal | 2.0-3.0 Nws | - | |
Al1.0-1.7 Ti 0.3-0.5 | Al2.7-3.2 Mn0.5-1.5 | Al2.7-3.2 Cu2.0-3.0 Mn0.5-1.5 | ||||||
Max ua haujlwm kub (°C) | 1200 | 1250 | 1150 | 1150 | 1100 | 300 | 400 | |
Kev tiv thaiv (Ω / cmf, 20 ℃) | 1.09 Nws | 1.18 | 1.21 | 1.11 | 1.04 ib | 1.33 | 1.33 | |
Kev tiv thaiv (uΩ / m, 60 ° F) | 655 | 704 ib | 727 ib | 668 ib | 626 | 800 | 800 | |
Qhov ceev (g / cm³) | 8.4 ib | 8.1 | 8.4 ib | 8.2 | 7.9 ib | 8.1 | 8.1 | |
Thermal conductivity (KJ / m·h· ℃) | 60.3 | 45.2 ib | 45.2 ib | 45.2 ib | 43.8 ib | 46.0 ib | 46.0 ib | |
Linear Expansion Coefficient (× 10¯6/ ℃) 20-1000 ℃) | 18.0 Nws | 17.0 Nws | 17.0 Nws | 17.0 Nws | 19.0 Nws | - | - | |
Melting Point (℃) | 1400 | 1380 | 1370 ib | 1390 ib | 1390 ib | 1400 | 1400 | |
Hardness (Hv) | 180 | 185 | 185 | 180 | 180 | 180 | 180 | |
Tensile zog (N / mm2) | 750 | 875 ib | 800 | 750 | 750 | 780 ua | 780 ua | |
Elongation (%) | ≥ 20 | ≥ 20 | ≥ 20 | ≥ 20 | ≥ 20 | 10-20 | 10-20 | |
Micrographic Structure | austenite | austenite | austenite | austenite | austenite | austenite | austenite | |
MagneticProperty | Tsis yog | Tsis yog | Tsis yog | Me ntsis | Tsis yog | Tsis yog | Tsis yog | |
Lub neej ceev (h / ℃) | ≥81/1200 | ≥50/1250 | ≥81/1200 | ≥81/1200 | ≥81/1200 | - | - |