Ribbon, circle, wire 27KH - EP685
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 27CH | EP685 | Delivery from the stock, in stock |
Relevance
Magnetically soft alloy of 27KH grade has according to
Applications
Precision instrumentation, innovative technologies, manufacturing of precision electronic sensors, household appliances, laser optics, measuring metrology equipment, computer memory components, microphone cores, magnetic antennas. Mark 27KX is used for magnetic cores of magnetic alternating field in radiotechnical and electrical devices.
Production
Magnetically soft materials are produced from low-carbon steels based on ferromagnetic iron of special purity, electrotechnical low-coercive alloys on iron or iron-nickel base, powder and composite ferromagnetics. These alloys are melted in special induction furnaces and then the ingots are forged or rolled.
Percentage composition (GOST 10 994 - 74)
| Mn | Si | C | Ni | Cr | P | S | Co |
|---|---|---|---|---|---|---|---|
| 0.2 - 0.4 | up to 0.25 | up to 0.04 | up to 0.3 | 0.3 - 0.6 | up to 0.015 | up to 0.015 | 26.5 - 28 |
Mechanical properties of 27KX alloy at 20oC.
| The assortment | Range. | Size | d5 | sT | s in | KCU | y | y | Heat treatment. |
|---|---|---|---|---|---|---|---|---|---|
| Tape, |
20 | 295 | 590 | ||||||
| - | - | mm | % | MPa | MPa | kJ/m2 | % | % | - |
| Nailed tape, |
2 | 1080 |
Physical properties of alloy grade 27KX .
| T | a 10 6 | E 10- 5 | l | C | r | R 10 9 |
|---|---|---|---|---|---|---|
| Grad | 1/Grad | MPa | W/(m-grad) | J/(kg-grad) | kg/m3 | Oh-m-m |
| 100 | 10.7 | |||||
| 20 | 2.2 | 7980 | 200 |
Designations
Physical properties of the alloy:
| Description | Designation |
|---|---|
| - Alloy data acquisition temperature [Grad] | - T |
| - Modulus of elasticity of the 1st kind, [MPa] | - E |
| - Coefficient of thermal linear expansion (at 20°C), [1/Grad] | -a |
| - Specific electrical resistance [Ohm-m] -R | -R |
| - Specific gravity [g/cm3] -r | -r |
| - Heat transfer coefficient [W/(m-grad)] -l | -l |
| - Specific heat capacity (at 20°C), [J/(kg-grad) | -C |
Mechanical properties:
| Description | Designation |
|---|---|
| - Ultimate yield strength (yield strength for permanent deformation) [MPa] | sT |
| - Tensile strength [MPa] | sT |
| - Ratio constriction [ % ] | y |
| - Tensile elongation [ % ] | d5 |
| - Brinell hardness, in [MPa] | HB |
| - Impact toughness [ kJ/m2 ] | KCU |
Magnetic properties :
| Description | Designation |
|---|---|
| - Coercive force (within) [ A/m] | Hc |
| - Magnetic permeability (not more than) [ MHN/m] | Umax |
| - Losses (not more than) at frequency 50 Hz and 1.0 Tl [ W/kg ] | P1.0/50 |
| - Magnetic induction Tl (not less) at magnetic field strength 100, in magnetic fields [ A/m] | B100 |
| - Coercive force (not less), [ A/m] | Hc |
| - Magnetic permeability (not more than), [ MHN/m] | Umax |
| - Losses (not more than) at frequency 50 Hz and 1.0 Tl [ W/kg ] | P1.0/50 |
weldability:
| Designation | Description |
|---|---|
| Limited weldable | - Must be preheated to 100-120°C with subsequent heat treatment |
| no restrictions | - No need for preheating and final heat treatment |
| Difficult to weld | - Preheating to 200-300°C with final heat treatment necessary |
Delivery
All 27KH products are certified. The technical documentation includes data on the chemical composition, the limiting percentage of impurities, the mechanical properties of products. From us you can buy in bulk a variety of semi-finished products for large-scale production. We also offer good conditions for retail buyers. You will be satisfied with the level of service and efficiency of service.
Buy at a bargain price
Evek GmbH offers an unlimited range of high quality precision alloys at competitive prices. If you can't choose, our experienced managers are always available and ready to advise you. Order with us and you will receive certified products that meet international quality standards in the shortest possible time. If you value your time, contact our nearest office today or place your order online.