Tape, a circle, a wire 38NKD
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 38НКД | Delivery from the stock, in stock | ||||
| 38НКД-Т | Delivery from the stock, in stock | ||||
| 38НКД-М | Delivery from the stock, in stock |
Feature 38NKD brand
This is precision alloy materials with minimal thermal coefficient of linear expansion (coefficient of linear expansion 7.0−7.8 [1 ° / C] in the temperature range -60 to + 400 ° C) is used for sealed with glass makes junction P-6 and S72−4. Such materials are characterized by unique physical and mechanical properties (magnetic, thermal, elastic, electric), thanks to the accuracy of the composition, manufacture and thoroughness of treatment, lack of unnecessary impurities. This group includes high-alloyed iron-based and nickel-cobalt alloys and other additives. Elements.
The percentage of
| Si | C | Fe | Mn | P | Ni | S | Co |
|---|---|---|---|---|---|---|---|
| to 0.4 | 0.3 | 49.72 -53.5 | 37.5 -38.5 | 4.5 -5.5 | to 0.015 | to 0.02 | 4.5 -5.5 |
The physical properties of the alloy 38NKD.
| MPa | hail | 1 / Grad | J / (kg · °) | kg / m3 | W / (m · deg) | Ohm m |
|---|---|---|---|---|---|---|
| E 10- 5 | T | a June 10 | C | r | l | R September 10 |
| 1.5 | 20 | 500 |
Mechanical properties 38NKD alloy at a temperature of 20 ° C.
| assortment | The size | sT | sre | Eg. | KCU | y | d5 | Heat treatment. |
|---|---|---|---|---|---|---|---|---|
| mm | MPa | MPa | - | kJ / m2 | % | % | - | |
| 450−550 | 23 | annealing |
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 |
All 38NKD brands presented products are certified. 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» offers its customers a choice of unlimited precision rolled metal products 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 make a reservation on the Internet.
