Metals -> High-temperature or heat-resistant steel and alloy -> Hidh-temperature or heat-resistant alloy Characteristics of the material KHN70VMYUT ( HN70VMJUT, ÕÍ70ÂÌÞÒ ).
Material : KHN70VMYUT ( HN70VMJUT, ÕÍ70ÂÌÞÒ ) Classification : Hidh-temperature or heat-resistant alloy
Chemical composition in % of the material KHN70VMYUT ( HN70VMJUT, ÕÍ70ÂÌÞÒ ) . Fe C Si Mn Ni S P Cr Mo W Ti Al Cu B max 3 0.01 - 0.16 max 0.6 max 0.5 65.02 - 76.29 max 0.02 max 0.02 14 - 16 3 - 5 4 - 6 1 - 1.4 1.7 - 2.2 max 0.07 max 0.01
Comment: Ni is a basis; the percentage of Ni is given approximately. Mechanical properties under Ò=20o Ñ of the material KHN70VMYUT ( HN70VMJUT, ÕÍ70ÂÌÞÒ ) .
Assortment Dimension Direct. s â s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Bar longitudinal 1030 670 28 26 800 Heating 1150o C, 3h,Cooling oil, Ageing 800o C, 20h,Cooling air,
Brinell hardness of the material KHN70VMYUT ( HN70VMJUT, ÕÍ70ÂÌÞÒ ) , HB 10 -1 = 277 - 302 MPa
Physical properties of the material KHN70VMYUT ( HN70VMJUT, ÕÍ70ÂÌÞÒ ) . T E 10- 5 a 10 6 l r C R 10 9 Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m 20 2.26 8600 1330 100 2.21 12.2 9.2 8570 1340 200 2.15 12.65 12.6 8540 1350 300 2.09 13.2 16.7 8510 1360 400 2.02 13.6 19.2 8470 1360 500 1.96 14.1 23 8430 1370 600 1.9 14.55 25.9 8390 1470 700 1.82 15.1 29.3 8340 1480 800 15.8 8290 900 8240 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material KHN70VMYUT ( HN70VMJUT, ÕÍ70ÂÌÞÒ ) . Weldability: hard weldability.
Specification :
Mechanical properties : s â - Tensile strength , [MPa] s T - Yield stress, [MPa] d 5 - Specific elongation at fracture , [ % ] y - Reduction of area , [ % ] KCU - Impact strength , [ kJ / m2 ] HB - Brinell hardness , [MPa]
Physical properties : T - Test temperature , [Grade] E - Young modulus , [MPa] a - Coefficient of linear expansion
(range 20o - T ) , [1/Grade] l - Termal (heat) condition coefficient , [Watt/(m·Grade)] r - Density , [kg/m3 ] C - Specific heat
( range 20o - T ), [J/(kg·Grade)] R - Electrical resistance , [Ohm·m]
Weldability : without limitations - welding is done without heating and subsequent heat treeting limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing
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