Circle 68NHVKTYU - EP578
Steel for the circle 68NHVKTYU-VI smelted in an open arc furnace induction method. In the first stage of the process is conducted at a rolling ingot t ° 1100 — 800 ° C. After cooling strain circle. In the first embodiment, it is immersed in water, and then cools the air or in oil. The second option involves using cooling water spray delayed for 4.5 hours. After hot rolling applied calibration required to make products as accurately as possible the outer diameter.
Physical properties of the alloy:
|— 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|
|— 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|
The percentage composition of the circle 68NHVKTYU-VI
|55,402 — 63.5||18 — 20||0.2||9 — 10.5||0.05||to 0.4||0.05||1||to 0.4||to 0.015||2.7 — 3.2||0.2||0.05||5.5 — 6.7||1.3 — 1.8||0.003||to 0.07||55,402 — 63.5|
|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|
Details of equipment and machinery for the power industry, rocket and space and aviation technology. Resistance range 68NHVKTYU-VI allows its use at t ° 1050 ° C for severe conditions. Therefore, it is suitable for chemical plant parts, it is widely used pulp and paper industry.
Circle 68NHVKTYU-VI 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 the best price
Digging LLC «Electrovek-steel» offers an unlimited range of iron-nickel alloys of the highest quality. We offer special purpose alloys for the best price from warehouses in Ukraine and Russia. If you are interested in our offer, please contact the nearest office. The qualified experts will provide all necessary information on the product, the price range, the implementation conditions. The cost of goods depends on the parameters of products and additional conditions of supply.