![]() |
MOQ: | 5kg |
Standard Packaging: | Packed with waterproof paper or weave bag, into pallets or wooden case. Special packaging requirements can also be accommodated. |
Delivery Period: | 3 days |
Payment Method: | T/T, D/P |
Supply Capacity: | 30 Tons per day |
Cr15Ni60/60Ni16Cr/NiCr6015 NiCr Alloys Consistent Performance in High-Resistance Applications
GB | JIS | ASTM | DIN EN/DIN | GOST |
Cr15Ni60 | NCHW-2 NCHR-2 |
60Ni16Cr | NiCr6015 | Х15Н60-Н |
Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys
Type
|
Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni80 | Cr20Ni30 | Cr25Ni20 | |
Main Chemical composition | Ni | Rest | 55.0-61.0 | 34.0-37.0 | Rest | 30.0-34.0 | 19.0-22.0 |
Cr | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 20.0-23.0 | 18.0-21.0 | 24.0-26.0 | |
Fe | ≤ 1.0 | Rest | Rest | ≤ 1.0 | Rest | Rest | |
Max. continuous service temp. of element (℃) | 1250 | 1150 | 1100 | 1200 | 1100 | 1050 | |
Resistivity at 20 ℃(μΩm) | 1.18±0.05 | 1.12±0.05 | 1.04±0.05 | 1.09±0.05 | 1.06±0.05 | 0.95±0.05 | |
Density(g/cm3) | 8.10 | 8.20 | 7.90 | 8.40 | 7.90 | 7.15 | |
Thermal condyctivity (KJ/m·h·℃) | 45.2 | 45.2 | 43.8 | 60.3 | 43.8 | 43.8 | |
Coefficient of lines expansion (α×10-6/℃) | 17.0 | 17.0 | 19.0 | 18.0 | 19.0 | 19.0 | |
Melting point (approx.)(℃) | 1380 | 1390 | 1390 | 1400 | 1390 | 1400 | |
Elonation at rupture(%) | >20 | >20 | >20 | >20 | >20 | >20 | |
Micrographic structure | Austenite | Austenite | Austenite | Austenite | Austenite | Austenite | |
Magnetic properties | Non-magnetic | Low-magnetic | Low-magnetic | Non-magnetic | Low-magnetic | Non-magnetic | |
Note:The various grades of electric resistance alloy material are blended with the amountof rare earth, titanium and other trace elements, to improve the processing performance andextend the period of the uselife. | |||||||
Chemical Composition Wt.% Cr15Ni60 | % | Ni | Fe | C | Si | Mn | P | S | Cr | Al |
Min | 55 | 0.75 | 15 | |||||||
Max | 61 | Rest | 0.08 | 1.6 | 0.6 | 0.02 | 0.015 | 18 | 0.5 |
Mechanical properties | Condition | Tensile Strength (UTS)(Rm) | Elongation(A5) | |||
D>3, T>0.2 | ≥600 MPa | ≥25% | ||||
0.1<D<0.3, T>0.2 | ≥600 MPa | ≥20% |
Some key features of Cr15Ni60 include:
These characteristics make Cr15Ni60 a valuable material in various industrial applications, particularly those requiring high-temperature resistance and stability.
Applications:
These applications highlight the versatility and importance of Cr15Ni60 in various industries where high-temperature resistance, stability, and reliability are critical.
Technical data of wires
Dia. (mm) | Cross-sectional area (mm²) | Weight/Meter (g/m) | Resistance/Meter at 20 ℃ (Ω/m) | Dia. (mm) | Cross-sectional area (mm²) | Weight/Meter (g/m) | Resistance/Meter at 20 ℃ (Ω/m) |
0.018 | 0.000255 | 0.002117 | 3410-4610 | 0.25 | 0.04909 | 0.4074 | 20.88-23.54 |
0.020 | 0.000314 | 0.002606 | 2940-3740 | 0.28 | 0.06158 | 0.5111 | 16.64-18.76 |
0.022 | 0.000380 | 0.003154 | 2440-3100 | 0.30 | 0.07069 | 0.5867 | 14.49-16.35 |
0.025 | 0.000491 | 0.004075 | 1880-2400 | 0.32 | 0.07548 | 0.6265 | 12.74-14.36 |
0.028 | 0.000616 | 0.005113 | 1530-1870 | 0.33 | 0.08553 | 0.7099 | 12.20-13.40 |
0.030 | 0.000707 | 0.005868 | 1338-1696 | 0.38 | 0.1134 | 0.9412 | 9.13-10.09 |
0.032 | 0.000804 | 0.006673 | 1180-1440 | 0.40 | 0.1257 | 1.0433 | 8.24-9.108 |
0.035 | 0.000962 | 0.007985 | 981-1200 | 0.41 | 0.132 | 1.0956 | 7.68-8.89 |
0.040 | 0.001257 | 0.01043 | 780.7-954.1 | 0.45 | 0.159 | 1.3197 | 6.51-7.196 |
0.045 | 0.00159 | 0.0132 | 594-726 | 0.50 | 0.1963 | 1.6293 | 5.273-5.829 |
0.050 | 0.001963 | 0.01629 | 499.6-610.6 | 0.55 | 0.2376 | 1.9721 | 4.518-4.994 |
0.055 | 0.00238 | 0.01975 | 407-477 | 0.60 | 0.2827 | 2.3464 | 3.797-4.197 |
0.063 | 0.00312 | 0.02590 | 321.41-377.31 | 0.65 | 0.3318 | 2.7539 | 3.235-3.575 |
0.070 | 0.00385 | 0.03196 | 260.5-305.9 | 0.70 | 0.3848 | 3.1938 | 2.789-3.083 |
0.080 | 0.005027 | 0.04172 | 199.5-234.1 | 0.75 | 0.4418 | 3.6669 | 2.43-2.686 |
0.090 | 0.006362 | 0.0528 | 157.6-185.0 | 0.80 | 0.5027 | 4.1724 | 2.136-2.36 |
0.100 | 0.007854 | 0.0652 | 127.7-149.9 | 0.85 | 0.5674 | 4.7094 | 1.891-2.091 |
0.110 | 0.009852 | 0.08177 | 105.5-123.9 | 0.90 | 0.6362 | 5.2805 | 1.687-1.865 |
0.120 | 0.01227 | 0.1018 | 88.67-104.1 | 0.95 | 0.7088 | 5.883 | 1.46-1.62 |
0.140 | 0.01539 | 0.1277 | 65.85-75.77 | 1.00 | 0.7854 | 6.5188 | 1.367-1.511 |
0.150 | 0.01767 | 0.1467 | 56.75-66.63 | 1.10 | 0.9503 | 7.8875 | 1.13-1.26 |
0.160 | 0.02011 | 0.01669 | 50.42-58.00 | 1.12 | 0.9852 | 8.1772 | 1.05-1.17 |
0.170 | 0.022700 | 0.1884 | 44.18-51.86 | 1.18 | 1.0936 | 9.0769 | 0.95-1.05 |
0.180 | 0.02545 | 0.2112 | 40.26-45.40 | 1.20 | 1.313 | 10.8979 | 0.79-0.87 |
0.190 | 0.02835 | 0.2353 | 35.37-41.53 | 1.30 | 1.327 | 11.0141 | 0.78-0.86 |
0.200 | 0.03142 | 0.2608 | 32.62-36.78 | 1.40 | 1.539 | 12.7737 | 0.70-0.77 |
0.212 | 0.035300 | 0.2930 | 28.41-33.35 | 1.50 | 1.767 | 14.6661 | 0.60-0.67 |
0.220 | 0.03801 | 0.3155 | 26.65-30.39 | 1.60 | 2.011 | 16.8924 | 0.52-0.58 |
The tolerance or wires diameter
Wires | Dia.(mm) | Tolerance |
0.018-0.025 | ±0.001 | |
0.028-0.035 | ±0.0015 | |
0.040-0.055 | ±0.002 | |
0.070 | ±0.0025 | |
0.08-0.10 | ±0.003 | |
0.11-0.14 | ±0.004 | |
0.16-0.20 | ±0.005 | |
0.22-0.25 | ±0.006 | |
0.28-0.30 | ±0.007 | |
0.32-0.40 | ±0.01 | |
0.41-0.50 | ±0.015 | |
0.55-0.80 | +0.02/-0.03 | |
0.85-1.00 | +0.02/-0.03 | |
1.10-1.50 | ±0.03 | |
Note:special specification can be produced as per client's request. |
Technical data of ribbon
Thickness × Width(mm) | Resistance/meter(20 ℃) (Ω/m) | Surface area/ohm (20℃) (cm2/Ω) | Weight/meter (g/m) | Surface area/meter (cm2/m) |
0.09x2.5 | 5.27 | 9.84 | 1.72 | 51.8 |
0.08x0.2 | 74 | 0.0756 | 0.122 | 5.6 |
0.08x0.3 | 49.4 | 0.154 | 0.183 | 7.6 |
0.08x0.4 | 37 | 0.259 | 0.244 | 9.6 |
0.08x0.5 | 29.6 | 0.392 | 0.305 | 11.6 |
0.08x0.6 | 24.7 | 0.551 | 0.367 | 13.6 |
0.08x0.7 | 21.2 | 0.737 | 0.428 | 15.6 |
0.08x0.8 | 18.5 | 0.951 | 0.489 | 17.6 |
0.08x0.9 | 16.5 | 1.19 | 0.55 | 19.6 |
0.08x1.0 | 14.8 | 1.46 | 0.611 | 21.6 |
0.08x1.2 | 12.3 | 2.07 | 0.733 | 25.6 |
0.08x1.5 | 9.87 | 3.2 | 0.916 | 31.6 |
0.08x1.8 | 8.23 | 4.57 | 1.1 | 37.6 |
0.08x2.0 | 7.4 | 5.62 | 1.22 | 41.6 |
0.07x0.2 | 84.6 | 0.0638 | 0.107 | 5.4 |
0.07x0.3 | 56.4 | 0.131 | 0.16 | 7.4 |
0.07x0.4 | 42.3 | 0.222 | 0.214 | 9.4 |
0.07x0.5 | 33.9 | 0.337 | 0.267 | 11.4 |
0.07x0.6 | 28.2 | 0.475 | 0.321 | 13.4 |
0.07x0.7 | 24.2 | 0.637 | 0.374 | 15.4 |
0.07x0.8 | 21.2 | 0.822 | 0.428 | 17.4 |
0.07x0.9 | 18.8 | 1.03 | 0.481 | 19.4 |
0.07x1.0 | 16.9 | 1.26 | 0.535 | 21.4 |
0.07x1.2 | 14.1 | 1.8 | 0.641 | 25.4 |
0.07x1.5 | 11.3 | 2.78 | 0.802 | 31.4 |
0.06x0.2 | 98.7 | 0.0527 | 0.0916 | 5.2 |
0.06x0.3 | 65.8 | 0.109 | 0.137 | 7.2 |
0.06x0.4 | 49.4 | 0.186 | 0.183 | 9.2 |
0.06x0.5 | 39.5 | 0.284 | 0.229 | 11.2 |
0.06x0.6 | 32.9 | 0.401 | 0.275 | 13.2 |
0.06x0.7 | 28.2 | 0.539 | 0.321 | 15.2 |
0.06x0.8 | 24.7 | 0.697 | 0.367 | 17.5 |
0.06x0.9 | 21.9 | 0.875 | 0.412 | 19.2 |
0.06x1.0 | 19.7 | 1.07 | 0.458 | 21.2 |
0.06x1.2 | 16.5 | 1.53 | 0.55 | 25.2 |
0.05x0.2 | 118 | 0.0422 | 0.0764 | 5.00 |
0.05x0.3 | 79 | 0.0886 | 0.115 | 7.00 |
0.05x0.4 | 59.2 | 0.152 | 0.153 | 9.00 |
0.05x0.5 | 47.4 | 0.232 | 0.191 | 11.00 |
0.05x0.6 | 39.5 | 0.329 | 0.229 | 13.00 |
0.05x0.7 | 33.9 | 0.443 | 0.267 | 15.0 |
0.05x0.8 | 29.6 | 0.574 | 0.305 | 17.0 |
0.05x0.9 | 16.3 | 0.722 | 0.344 | 19.0 |
0.05x1.0 | 23.7 | 0.886 | 0.382 | 21.0 |
Ribbon is rolled by the wire, the actual cross-sectional area of the ribbon is smaller 8% than calculated by the rectangular. |
![]() |
MOQ: | 5kg |
Standard Packaging: | Packed with waterproof paper or weave bag, into pallets or wooden case. Special packaging requirements can also be accommodated. |
Delivery Period: | 3 days |
Payment Method: | T/T, D/P |
Supply Capacity: | 30 Tons per day |
Cr15Ni60/60Ni16Cr/NiCr6015 NiCr Alloys Consistent Performance in High-Resistance Applications
GB | JIS | ASTM | DIN EN/DIN | GOST |
Cr15Ni60 | NCHW-2 NCHR-2 |
60Ni16Cr | NiCr6015 | Х15Н60-Н |
Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys
Type
|
Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni80 | Cr20Ni30 | Cr25Ni20 | |
Main Chemical composition | Ni | Rest | 55.0-61.0 | 34.0-37.0 | Rest | 30.0-34.0 | 19.0-22.0 |
Cr | 28.0-31.0 | 15.0-18.0 | 18.0-21.0 | 20.0-23.0 | 18.0-21.0 | 24.0-26.0 | |
Fe | ≤ 1.0 | Rest | Rest | ≤ 1.0 | Rest | Rest | |
Max. continuous service temp. of element (℃) | 1250 | 1150 | 1100 | 1200 | 1100 | 1050 | |
Resistivity at 20 ℃(μΩm) | 1.18±0.05 | 1.12±0.05 | 1.04±0.05 | 1.09±0.05 | 1.06±0.05 | 0.95±0.05 | |
Density(g/cm3) | 8.10 | 8.20 | 7.90 | 8.40 | 7.90 | 7.15 | |
Thermal condyctivity (KJ/m·h·℃) | 45.2 | 45.2 | 43.8 | 60.3 | 43.8 | 43.8 | |
Coefficient of lines expansion (α×10-6/℃) | 17.0 | 17.0 | 19.0 | 18.0 | 19.0 | 19.0 | |
Melting point (approx.)(℃) | 1380 | 1390 | 1390 | 1400 | 1390 | 1400 | |
Elonation at rupture(%) | >20 | >20 | >20 | >20 | >20 | >20 | |
Micrographic structure | Austenite | Austenite | Austenite | Austenite | Austenite | Austenite | |
Magnetic properties | Non-magnetic | Low-magnetic | Low-magnetic | Non-magnetic | Low-magnetic | Non-magnetic | |
Note:The various grades of electric resistance alloy material are blended with the amountof rare earth, titanium and other trace elements, to improve the processing performance andextend the period of the uselife. | |||||||
Chemical Composition Wt.% Cr15Ni60 | % | Ni | Fe | C | Si | Mn | P | S | Cr | Al |
Min | 55 | 0.75 | 15 | |||||||
Max | 61 | Rest | 0.08 | 1.6 | 0.6 | 0.02 | 0.015 | 18 | 0.5 |
Mechanical properties | Condition | Tensile Strength (UTS)(Rm) | Elongation(A5) | |||
D>3, T>0.2 | ≥600 MPa | ≥25% | ||||
0.1<D<0.3, T>0.2 | ≥600 MPa | ≥20% |
Some key features of Cr15Ni60 include:
These characteristics make Cr15Ni60 a valuable material in various industrial applications, particularly those requiring high-temperature resistance and stability.
Applications:
These applications highlight the versatility and importance of Cr15Ni60 in various industries where high-temperature resistance, stability, and reliability are critical.
Technical data of wires
Dia. (mm) | Cross-sectional area (mm²) | Weight/Meter (g/m) | Resistance/Meter at 20 ℃ (Ω/m) | Dia. (mm) | Cross-sectional area (mm²) | Weight/Meter (g/m) | Resistance/Meter at 20 ℃ (Ω/m) |
0.018 | 0.000255 | 0.002117 | 3410-4610 | 0.25 | 0.04909 | 0.4074 | 20.88-23.54 |
0.020 | 0.000314 | 0.002606 | 2940-3740 | 0.28 | 0.06158 | 0.5111 | 16.64-18.76 |
0.022 | 0.000380 | 0.003154 | 2440-3100 | 0.30 | 0.07069 | 0.5867 | 14.49-16.35 |
0.025 | 0.000491 | 0.004075 | 1880-2400 | 0.32 | 0.07548 | 0.6265 | 12.74-14.36 |
0.028 | 0.000616 | 0.005113 | 1530-1870 | 0.33 | 0.08553 | 0.7099 | 12.20-13.40 |
0.030 | 0.000707 | 0.005868 | 1338-1696 | 0.38 | 0.1134 | 0.9412 | 9.13-10.09 |
0.032 | 0.000804 | 0.006673 | 1180-1440 | 0.40 | 0.1257 | 1.0433 | 8.24-9.108 |
0.035 | 0.000962 | 0.007985 | 981-1200 | 0.41 | 0.132 | 1.0956 | 7.68-8.89 |
0.040 | 0.001257 | 0.01043 | 780.7-954.1 | 0.45 | 0.159 | 1.3197 | 6.51-7.196 |
0.045 | 0.00159 | 0.0132 | 594-726 | 0.50 | 0.1963 | 1.6293 | 5.273-5.829 |
0.050 | 0.001963 | 0.01629 | 499.6-610.6 | 0.55 | 0.2376 | 1.9721 | 4.518-4.994 |
0.055 | 0.00238 | 0.01975 | 407-477 | 0.60 | 0.2827 | 2.3464 | 3.797-4.197 |
0.063 | 0.00312 | 0.02590 | 321.41-377.31 | 0.65 | 0.3318 | 2.7539 | 3.235-3.575 |
0.070 | 0.00385 | 0.03196 | 260.5-305.9 | 0.70 | 0.3848 | 3.1938 | 2.789-3.083 |
0.080 | 0.005027 | 0.04172 | 199.5-234.1 | 0.75 | 0.4418 | 3.6669 | 2.43-2.686 |
0.090 | 0.006362 | 0.0528 | 157.6-185.0 | 0.80 | 0.5027 | 4.1724 | 2.136-2.36 |
0.100 | 0.007854 | 0.0652 | 127.7-149.9 | 0.85 | 0.5674 | 4.7094 | 1.891-2.091 |
0.110 | 0.009852 | 0.08177 | 105.5-123.9 | 0.90 | 0.6362 | 5.2805 | 1.687-1.865 |
0.120 | 0.01227 | 0.1018 | 88.67-104.1 | 0.95 | 0.7088 | 5.883 | 1.46-1.62 |
0.140 | 0.01539 | 0.1277 | 65.85-75.77 | 1.00 | 0.7854 | 6.5188 | 1.367-1.511 |
0.150 | 0.01767 | 0.1467 | 56.75-66.63 | 1.10 | 0.9503 | 7.8875 | 1.13-1.26 |
0.160 | 0.02011 | 0.01669 | 50.42-58.00 | 1.12 | 0.9852 | 8.1772 | 1.05-1.17 |
0.170 | 0.022700 | 0.1884 | 44.18-51.86 | 1.18 | 1.0936 | 9.0769 | 0.95-1.05 |
0.180 | 0.02545 | 0.2112 | 40.26-45.40 | 1.20 | 1.313 | 10.8979 | 0.79-0.87 |
0.190 | 0.02835 | 0.2353 | 35.37-41.53 | 1.30 | 1.327 | 11.0141 | 0.78-0.86 |
0.200 | 0.03142 | 0.2608 | 32.62-36.78 | 1.40 | 1.539 | 12.7737 | 0.70-0.77 |
0.212 | 0.035300 | 0.2930 | 28.41-33.35 | 1.50 | 1.767 | 14.6661 | 0.60-0.67 |
0.220 | 0.03801 | 0.3155 | 26.65-30.39 | 1.60 | 2.011 | 16.8924 | 0.52-0.58 |
The tolerance or wires diameter
Wires | Dia.(mm) | Tolerance |
0.018-0.025 | ±0.001 | |
0.028-0.035 | ±0.0015 | |
0.040-0.055 | ±0.002 | |
0.070 | ±0.0025 | |
0.08-0.10 | ±0.003 | |
0.11-0.14 | ±0.004 | |
0.16-0.20 | ±0.005 | |
0.22-0.25 | ±0.006 | |
0.28-0.30 | ±0.007 | |
0.32-0.40 | ±0.01 | |
0.41-0.50 | ±0.015 | |
0.55-0.80 | +0.02/-0.03 | |
0.85-1.00 | +0.02/-0.03 | |
1.10-1.50 | ±0.03 | |
Note:special specification can be produced as per client's request. |
Technical data of ribbon
Thickness × Width(mm) | Resistance/meter(20 ℃) (Ω/m) | Surface area/ohm (20℃) (cm2/Ω) | Weight/meter (g/m) | Surface area/meter (cm2/m) |
0.09x2.5 | 5.27 | 9.84 | 1.72 | 51.8 |
0.08x0.2 | 74 | 0.0756 | 0.122 | 5.6 |
0.08x0.3 | 49.4 | 0.154 | 0.183 | 7.6 |
0.08x0.4 | 37 | 0.259 | 0.244 | 9.6 |
0.08x0.5 | 29.6 | 0.392 | 0.305 | 11.6 |
0.08x0.6 | 24.7 | 0.551 | 0.367 | 13.6 |
0.08x0.7 | 21.2 | 0.737 | 0.428 | 15.6 |
0.08x0.8 | 18.5 | 0.951 | 0.489 | 17.6 |
0.08x0.9 | 16.5 | 1.19 | 0.55 | 19.6 |
0.08x1.0 | 14.8 | 1.46 | 0.611 | 21.6 |
0.08x1.2 | 12.3 | 2.07 | 0.733 | 25.6 |
0.08x1.5 | 9.87 | 3.2 | 0.916 | 31.6 |
0.08x1.8 | 8.23 | 4.57 | 1.1 | 37.6 |
0.08x2.0 | 7.4 | 5.62 | 1.22 | 41.6 |
0.07x0.2 | 84.6 | 0.0638 | 0.107 | 5.4 |
0.07x0.3 | 56.4 | 0.131 | 0.16 | 7.4 |
0.07x0.4 | 42.3 | 0.222 | 0.214 | 9.4 |
0.07x0.5 | 33.9 | 0.337 | 0.267 | 11.4 |
0.07x0.6 | 28.2 | 0.475 | 0.321 | 13.4 |
0.07x0.7 | 24.2 | 0.637 | 0.374 | 15.4 |
0.07x0.8 | 21.2 | 0.822 | 0.428 | 17.4 |
0.07x0.9 | 18.8 | 1.03 | 0.481 | 19.4 |
0.07x1.0 | 16.9 | 1.26 | 0.535 | 21.4 |
0.07x1.2 | 14.1 | 1.8 | 0.641 | 25.4 |
0.07x1.5 | 11.3 | 2.78 | 0.802 | 31.4 |
0.06x0.2 | 98.7 | 0.0527 | 0.0916 | 5.2 |
0.06x0.3 | 65.8 | 0.109 | 0.137 | 7.2 |
0.06x0.4 | 49.4 | 0.186 | 0.183 | 9.2 |
0.06x0.5 | 39.5 | 0.284 | 0.229 | 11.2 |
0.06x0.6 | 32.9 | 0.401 | 0.275 | 13.2 |
0.06x0.7 | 28.2 | 0.539 | 0.321 | 15.2 |
0.06x0.8 | 24.7 | 0.697 | 0.367 | 17.5 |
0.06x0.9 | 21.9 | 0.875 | 0.412 | 19.2 |
0.06x1.0 | 19.7 | 1.07 | 0.458 | 21.2 |
0.06x1.2 | 16.5 | 1.53 | 0.55 | 25.2 |
0.05x0.2 | 118 | 0.0422 | 0.0764 | 5.00 |
0.05x0.3 | 79 | 0.0886 | 0.115 | 7.00 |
0.05x0.4 | 59.2 | 0.152 | 0.153 | 9.00 |
0.05x0.5 | 47.4 | 0.232 | 0.191 | 11.00 |
0.05x0.6 | 39.5 | 0.329 | 0.229 | 13.00 |
0.05x0.7 | 33.9 | 0.443 | 0.267 | 15.0 |
0.05x0.8 | 29.6 | 0.574 | 0.305 | 17.0 |
0.05x0.9 | 16.3 | 0.722 | 0.344 | 19.0 |
0.05x1.0 | 23.7 | 0.886 | 0.382 | 21.0 |
Ribbon is rolled by the wire, the actual cross-sectional area of the ribbon is smaller 8% than calculated by the rectangular. |