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| Brand Name : | TANKII | 
| Model Number : | NiCr70/30 | 
| Certification : | DIN, ASTM, JIS ROHS | 
| Price : | 30-80USD | 
| Payment Terms : | T/T, L/C, , Western Union | 
| Supply Ability : | 50 tons per month | 
| Delivery Time : | 5-10 work days | 
SWG 26 27 28 Nichrome Wire NiCr70/30 for chip resistor
Related Grade: Ni70Cr30, Nikrothal 70, N7, HAI-NiCr 70, Chromel 70/30, Resistohm 70, Balco,Tophet 30,Cronix 70,Alloy 710,Stablohm 710)
Cr30Ni70 is a nickel-chromium alloy (NiCr alloy) characterized byHigh resistivity, good oxidation resistance,very good form stability,good ductility and excellent weldability. It is suitable for use at temperatures up to 1250°C.
| C | P | S | Mn | Si | Cr | Ni | Al | Fe | Other | 
| Max | |||||||||
| 0.05 | 0.02 | 0.015 | 0.60 | 0.75~1.60 | 28.0~31.0 | Bal. | Max 0.50 | Max 1.0 | - | 
| Yield strength | Tensile Strength | Elongation | 
| Mpa | Mpa | % | 
| 430 | 820 | 30 | 
| Density (g/cm3) | 8.1 | 
| Electrical resistivity at 20℃(Ωmm2/m) | 1.18 | 
| Conductivity coefficient at 20℃ (WmK) | 14 | 
| Coefficient of thermal expansion | |
| Temperature | Coefficient of Thermal Expansion x10-6/℃ | 
| 20 ℃- 1000℃ | 17 | 
| Specific heat capacity | |
| Temperature | 20℃ | 
| J/gK | 0.46 | 
| Melting point (℃) | 1380 | 
| Max continuous operating temperature in air (℃) | 1250 | 
| Magnetic properties | non-magnetic | 
Temperature Factors Of Electrical Resistivity
| 20℃ | 100℃ | 200℃ | 300℃ | 400℃ | 500℃ | 600℃ | 
| 1 | 1.007 | 1.016 | 1.028 | 1.038 | 1.044 | 1.036 | 
| 700℃ | 800℃ | 900℃ | 1000℃ | 1100℃ | 1200℃ | 1300℃ | 
| 1.03 | 1.028 | 1.029 | 1.033 | 1.037 | 1.043 | - | 
Size and tolerance
| Diameter(mm) | Tolerance(mm) | Diameter(mm) | Tolerance(mm) | 
| 0.03-0.05 | ±0.005 | >0.50-1.00 | ±0.02 | 
| >0.05-0.10 | ±0.006 | >1.00-3.00 | ±0.03 | 
| >0.10-0.20 | ±0.008 | >3.00-6.00 | ±0.04 | 
| >0.20-0.30 | ±0.010 | >6.00-8.00 | ±0.05 | 
| >0.30-0.50 | ±0.015 | >8.00-12.0 |  			 ±0.4  |  		
Specifiations
| Alloy Type | Diameter (mm)  |  			Resistivity (μΩm)(20°C)  |  			Tensile Strength (N/mm²)  |  			Elongation(%) | Bending Times  |  			Max.Continuous Service Temperature(°C)  |  			Working Life (hours)  |  		
| Cr20Ni80 | <0.50 | 1.09±0.05 | 850-950 | >20 | >9 | 1200 | >20000 | 
| 0.50-3.0 | 1.13±0.05 | 850-950 | >20 | >9 | 1200 | >20000 | |
| >3.0 | 1.14±0.05 | 850-950 | >20 | >9 | 1200 | >20000 | |
| Cr30Ni70 | <0.50 | 1.18±0.05 | 850-950 | >20 | >9 | 1250 | >20000 | 
| ≥0.50 | 1.20±0.05 | 850-950 | >20 | >9 | 1250 | >20000 | |
| Cr15Ni60 | <0.50 | 1.12±0.05 | 850-950 | >20 | >9 | 1125 | >20000 | 
| ≥0.50 | 1.15±0.05 | 850-950 | >20 | >9 | 1125 | >20000 | |
| Cr20Ni35 | <0.50 | 1.04±0.05 | 850-950 | >20 | >9 | 1100 | >18000 | 
| ≥0.50 | 1.06±0.05 | 850-950 | >20 | >9 | 1100 | >18000 | |
| 1Cr13Al4 | 0.03-12.0 | 1.25±0.08 | 588-735 | >16 | >6 | 950 | >10000 | 
| 0Cr15Al5 | 1.25±0.08 | 588-735 | >16 | >6 | 1000 | >10000 | |
| 0Cr25Al5 | 1.42±0.07 | 634-784 | >12 | >5 | 1300 | >8000 | |
| 0Cr23Al5 | 1.35±0.06 | 634-784 | >12 | >5 | 1250 | >8000 | |
| 0Cr21Al6 | 1.42±0.07 | 634-784 | >12 | >5 | 1300 | >8000 | |
| 1Cr20Al3 | 1.23±0.06 | 634-784 | >12 | >5 | 1100 | >8000 | |
| 0Cr21Al6Nb | 1.45±0.07 | 634-784 | >12 | >5 | 1350 | >8000 | |
| 0Cr27Al7Mo2 | 0.03-12.0 | 1.53±0.07 | 686-784 | >12 | >5 | 1400 |  			 >8000  |  		


 







                                 
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