Tu 14-3-520-2005, high-precision pipes made of KhN78T alloy according to Tu 14-3-582-77. Seamless thin-walled pipes made of KhN78T, KhN77TYR alloys
Technical characteristics
Tu 14-3-520-2005, Tu 14-3-582-77 regulate the production of cold-deformed seamless tubes with high precision made of CrN78T (EI-435) alloy working at 1100°C. The alloy is heat-resistant, heat-resistant and difficult to weld. Hardness after hardening HB 10 -1 = 200 N/mm2.
Substitutes
CrN38VT, 12X25H16G7AR, 20X23H18, N06025, 2.4951, NiCr20Ti, GH3030
Percentage composition of CrN78T GOST 5632-72
| Fe | C | Si | Mn | Ni | S | P | Cr | Ti |
| ≤6 | ≤0.12 | ≤0.8 | ≤0.7 | 70.003 - 80.85 | ≤0.012 | ≤0.015 | 19 - 22 | 0.15 - 0.35 |
| Range | GOST | Size | e.g. | s in | sT | d5 | y | Heat treatment |
| - | mm | - | MPa | MPa | % | % | - | |
| Sheet, | 24982-81 | up to 3.9 | 860 | 35 | Quenching 980 - 1020 °C, air cooling, | |||
| Sheet, | 24982-81 | 4 - 11 | 880 | 30 | Quenched 980 - 1020 °C, air cooled | |||
| Forgings, | 24982-81 | ≤600 | Prod. | 588 | 196 | 25-30 | 35-40 | Hardening |
| t° | E 10- 5 | a 10 6 | l | r | R 10 9 |
| Degree | MPa | 1/Gradus | W/(m-degree) | kg/m3 | Ohm-m |
| 20 | 2.24 | 8400 | 1090 | ||
| 200 | 2.13 | 13 | 16.7 | 8340 | 1108 |
| 400 | 2 | 13.8 | 20.6 | 8260 | 1127 |
| 600 | 1.84 | 14.7 | 24.8 | 8180 | 1135 |
| 800 | 15.5 | 28.9 | 8090 | 1123 |
Sv - Ultimate Short-Term Strength
sT - Limit of proportionality (yield strength for permanent deformation)
d5 - Tensile elongation at break.
y - Relative contraction
E - Modulus of elasticity of the first kind
C - specific heat capacity
a - Coefficient of thermal (linear) expansion
l - Thermal conductivity coefficient (heat capacity of the material)
r - specific weight
Supplier
The supplier Evek GmbH offers to buy cold formed seamless tubes at the most optimal price in the given segment of rolled products. We offer cold drawing seamless pipes from the specialized warehouses of Evek GmbH with delivery in any city. Full compliance with Tu 14-3-520-2005, Tu 14-3-582-77.
Buy, best price
Supplier offers to buy cold-deformed seamless pipe TU 14-3-520-2005, TU 14-3-582-77, the price - due to technological features of production without the inclusion of additional costs. The website of the company Evek GmbH contains information on the latest arrivals of products. The price is optimal from the supplier. Timely delivery is provided by representative offices in Eastern European cities.
