Tape, a circle, a wire 27KH - EP685
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 27КХ | EP685 | Delivery from the stock, in stock |
Relevance
The soft magnetic alloy has 27KH mark according to GOST 19 693−74 induction coercive force of up to 4 kA / m. Such soft magnetic materials have high initial magnetic permeability value can be magnetized to saturation weak fields.
application
The scope of precision instrumentation, innovative technologies, production of precise electronic sensors, home appliances, laser optics, metrology measuring equipment, memory components of computers, microphones core, magnetic antennas. Mark 27KH used for magnetic cores of the magnetic alternating field in the radio and electrical appliances.
Production
Soft magnetic materials are made from low-carbon steels based on high purity ferromagnetic iron, electrical low coercitive alloys of iron or iron-nickel-based composite powder and ferromagnetic materials. Such alloys are melted in a special induction furnaces, and then subjected to pull the shoes ingots or rental.
The percentage of (GOST 10994 — 74)
| Mn | Si | C | Ni | Cr | P | S | Co |
|---|---|---|---|---|---|---|---|
| 0.2 — 0.4 | 0.25 | to 0.04 | 0.3 | 0.3 — 0.6 | to 0.015 | to 0.015 | 26.5 — 28 |
27KH mechanical properties of the alloy at a temperature of 20 ° C.
| assortment | Eg. | The size | d5 | sT | sre | KCU | y | y | Heat treatment. |
|---|---|---|---|---|---|---|---|---|---|
| Tape, 10 GOST 160−75 | 20 | 295 | 590 | ||||||
| - | - | mm | % | MPa | MPa | kJ / m2 | % | % | - |
| Tape cold-worked. GOST 10 160−75 | 2 | 1080 |
The physical properties of the alloy 27KH brand.
| T | a June 10 | E 10- 5 | l | C | r | R September 10 |
|---|---|---|---|---|---|---|
| hail | 1 / Grad | MPa | W / (m · deg) | J / (kg · °) | kg / m3 | Ohm m |
| 100 | 10.7 | |||||
| 20 | 2.2 | 7980 | 200 |
designations
Physical properties of the alloy:
| Description | designation |
|---|---|
| — Temperature data acquisition of the alloy [Castle] | — T |
| — Modulus of elasticity of the 1st kind, [MPa] | — E |
| — Coefficient of linear thermal expansion (at 20 ° C) [1 / deg] | -a |
| — The electrical resistance [ohm · m] | -R |
| — Specific weight [g / cm3] | -r |
| — Thermal conductivity [W / (m · deg)] | -l |
| — Specific heat capacity (at 20 ° C) [J / (kg · deg)] | -C |
Mechanical properties:
| Description | designation |
|---|---|
| — The limit of proportionality (the yield strength for the residual strain) [MPa] | sT |
| — Short-term strength [MPa] | sre |
| — Reduction [%] | y |
| — Elongation at break [%] | d5 |
| — Brinell hardness in [MPa] | HB |
| — Impact strength [kJ / m2] | KCU |
Magnetic properties:
| Description | designation |
|---|---|
| — The coercive force (within) [A / m] | Hc |
| — Permeability (max) [mH / m] | Umax |
| — Specific losses (maximum) at 50 Hz and 1.0 T. The magnetic flux density [W / kg] | P1.0 / 50 |
| — T. Magnetic induction (at least) at a voltage of the magnetic field 100 in a magnetic field [A / m] | B100 |
| — The coercive force (not more), [A / m] | Hc |
| — Permeability (max) [mH / m] | Umax |
| — Specific losses (max) at a frequency of 50 Hz and a magnetic induction of 1.0 T [W / kg] | P1.0 / 50 |
Weldability:
| designation | Description |
|---|---|
| limited weldability | — Needs to preheating t ° 100−120 ° C with a final heat treatment |
| no limits | — No need for preliminary heating and final heat treatment |
| difficult to weld | — Needs to preheating t ° 200−300 ° C with a final heat treatment |
Supply
All products are certified 27KH brand. The technical documentation includes data on the chemical composition, limiting the percentage of impurities; mechanical properties of products. We can buy in bulk a variety of semi-finished products for large-scale productions. We also offer good conditions for retail customers. You will be satisfied with the level of service and speed of service.
Buy at a bargain price
The company «Electrovek-steel» provides for the implementation of an unlimited range of precision alloys of the highest quality at a competitive price. If you are not sure, offers experienced managers who are always connected and ready to provide advice. Having made an order with us, you will receive certified products that comply with Russian and international standards of quality in the shortest possible time. If you value your time, contact today with our nearest office in Russia or in Ukraine, or order it over the Internet.
