Sheet, circle, wire KhN80TBU - EI607

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
HN80TBY EI607 Delivery from the stock, in stock
HN80T1BYu EI607A Delivery from the stock, in stock

Relevance

Heat-resistant nickel-based alloy KhN80TBY (EI607) is ideal for the production of turbines which are operated at 700° C for a long time. In modern engines the material for turbine blades must have high resistance to breakage under low-cycle and thermal fatigue, which is the main cause of breakage today. The danger of fracture can be exacerbated by surface reactions that are associated with grain boundary loosening and gas corrosion. The requirements to the material for turbine blades are caused by the latest developments of the engine design, they are connected with increase in plasticity, heat resistance, resistance to dynamic loads and thermal fatigue, as well as resistance to gaseous media.

Percentage composition (GOST 5632-72).

Si C Fe Mn P S Ni Cr Al Ti Nb
up to 0.8 up to 0.08 up to 3 up to 1 up to 0.015 to 0.012 72.293 - 81.7 15 - 18 0.5 - 1 1.8 - 2.3 1 - 1.5

Technological characteristics of the alloy CrNi80Tbyu

Designation Description
Difficult-to-weld - To strengthen the welds requires preheating to 200-300 ° C and the final thermal annealing.

The mechanical characteristics of the alloy grade KhN80TBYu at 20 ° C.

Rolled products E.g. Size d5 y s in sT Heat treatment. KCU
- - mm % % MPa MPa - kJ/m2
Bar Prod. 18 22 950 650 700

Mechanical properties:

Description Designation
- Proportional limit (yield strength for permanent deformation) [MPa] sT
- Tensile strength [MPa] sT
- Ratio constriction [ % ] y
- Tensile elongation [ % ] d5
- Brinell hardness, in [MPa] HB
- Impact toughness [ kJ/m2 ] KCU

The main qualities of CrN80TBU grade

1/Grad MPa Grad W/(m-grad) Ohm-m J/(kg-grad) kg/m3
16.35 1.68 800 28.9
15.6 1.78 700 26.3 1240
14.9 1.88 600 26.3 1230
14.4 1.97 500 24.3 1220
14 2.04 400 20.1 1200
13.1 2.1 300 17.9 1190
2.15 200 15.5 1180
2.21 100 13.4 1170
2.24 20 8300

physical properties

Description Designation
- Alloy data acquisition temperature [degrees] - T
- Modulus of elasticity of the 1st kind, [MPa] - E
- Coefficient of thermal linear expansion (at 20°C), [1/Grad] -a
- Specific electrical resistance [Ohm-m] -R -R
- Specific gravity [g/cm3] -r -r
- Heat transfer coefficient [W/(m-grad)] -l -l
- Specific heat capacity (at 20°C), [J/(kg-grad) -C

Magnetic properties

Description Designation
- Coercive force (within) [ A/m] Hc
- Magnetic permeability (not more than) [ MHN/m] Umax
- Losses (not more than) at frequency 50 Hz and 1.0 Tl [ W/kg ] P1.0/50
- Magnetic induction Tl (not less) at magnetic field strength 100, in magnetic fields [ A/m] B100
- Coercive force (not more), [ A/m] Hc
- Magnetic permeability (not more than), [ MHN/m] Umax
- Specific loss (max) at frequency 50 Hz and 1.0 Tesla [ W/kg ]

Foreign analogues of KhN80TBU alloy grade.

Japan USA
JIS -
NCF750 UNS07750

Supplied

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