Table - Specific resistance of wire Fechral
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Technical specifications
The alloy is precision with high electrical resistance. It combines high t ° melting and considerable electrical resistance: 1,251−1,5 Ohm • mm2 / m ,. The hardness of HB 10 -1 = 180 — 260 MPa. The relatively low density (7.1−7.4 g / cm³) makes the alloy lighter than nichrome by 12−17%. Due to the use of inexpensive aluminum instead of nickel, the cost of production is reduced by 6 times compared with nichrome.
Comparative physical properties
| Make | sв, Н / mm 2 | d5,% | r, g / cm 3 | t ° С | R, Ohm • mm² / m | a, 1 / Grad | l, KJ / m • h • ° C | T, hour |
| X13Si4 | 580−680 | >12 | 7.40 | 650 | 1.25 ± 0.05 | 15.3 | 52.7 | 580−680 |
| X15Y5 | 590−690 | >12 | 7.15 | 750 | 1.3 ± 0.05 | 15.6 | 52.4 | > 4,000 |
| X23S5T | 630−780 | >12 | 7.25 | 1250 | 1.35 ± 0.05 | 15.0 | 60.2 | > 4,000 |
| X23Y5 | 630−780 | >12 | 7.25 | 1250 | 1.35 ± 0.05 | 15.0 | 60.2 | > 4,000 |
- sв — Short-term strength limit
- d5 — Elongation at break.
- r — specific gravity
- t ° — Maximum continuous temperature (° C)
- R is the electrical resistivity
- a — Coefficient of temperature (linear) expansion [1 / degree]
- l — Coefficient of thermal conductivity (heat capacity of the material)
- Т — Service life, hours.
Application
Production of resistive elements, as well as electric heating devices.
Storage
In closed warehouses or under a canopy, where adequate protection against mechanical and other damages is provided.
Delivery, price
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