Sheet, strip 45kh14n14v2m - эи69
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High-temperature resistant austenitic steel. It has high mechanical properties up to 650 ° C. Steel is difficult to weld. Hardness HB 10 -1 = 197−285 MPa
Vacation 810 — 830 ° C, air.
Percent composition, GOST 5632−72
|basis||0.4 — 0.5||≤0.8||≤0.7||13 — 15||≤0.02||≤0.035||13 — 15||0.25 — 0.4||2 — 2.8|
Mechanical properties (temperature 20 ° C)
- sв — Short-term strength limit: 720 MPa;
- sT — Proportionality limit (yield strength for permanent deformation): 315 MPa.
- d5 — Elongation at break: 20%;
- y — Relative narrowing: 25%;
- r — Specific gravity 8,0 g / cm 3 .
|t ° C
||E 10 — 5||a 10 6||l||r||C||R 10 9|
|Degree||MPa||1 / Grad||W / (m · deg)||kg / m 3||J / (kg · deg)||Ohm · m|
- E — Modulus of elasticity of the first kind
- C is the specific heat
- a — Coefficient of temperature (linear) expansion
- l — Coefficient of thermal conductivity (heat capacity of the material)
- r — specific gravity
- R is the electrical resistivity
Valves for motors, forgings, parts of pipelines that last for a long time at temperatures up to 650 ° C.
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