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PT-7M pipe, wire
Alloy grade PT are similar to titanium alloys, which are designed KM research Institute «Prometheus» for marine use. These alloys composition does not match the common alloys and aerospace applications.
| Production and advantages of rod, wire grade PT-7M | ||||
|---|---|---|---|---|
| Prefabricated | Treatment | Plasticity of δ% | Strength (MPa) | KCU j/cm3 |
| Rod | The degree of deformation of 40% | 7% | 840 | --- |
| Wire | Annealing | 22% | 500 | 80 |
| The degree of deformation of 80% | 4% | 950 | --- | |
| The degree of deformation 60% | 5% | 900 | --- | |
Annealing temperature for forgings, die forgings and rods of alloy PT-7M is in the range of 600° — 650 °C, and the heat resistance of the product depends on the cooling rate after heat treatment. Cooling of the alloy with an intermediate rate between the furnace cooling and water offers the greatest resistance.
| The physical characteristics of PT-7m | |
|---|---|
| The temperature at which the received data characteristics, °C | 20°C |
| Coefficient of thermal conductivity at 200 °C [1/ °C] | 10,5 |
| Density [g/cm3] | 4,49 |
| The modulus of elasticity of 1 of the kind E [MPa]x10-5 | 1,12 |
Limit crackbrain. strength sin [MPa] Sheet |
500−650 |
Limit crackbrain. strength sin [MPa] Rod |
480−680 |
| Electrical resistivity, Mhmm2/m | Of 1.08 |
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