Metals -> High-temperature or heat-resistant steel and alloy -> Hidh-temperature or heat-resistant alloy Characteristics of the material KHN77TYUR ( HN77TJUR, ÕÍ77ÒÞÐ ).
Material : KHN77TYUR ( HN77TJUR, ÕÍ77ÒÞÐ ) Classification : Hidh-temperature or heat-resistant alloy
Chemical composition in % of the material KHN77TYUR ( HN77TJUR, ÕÍ77ÒÞÐ ) . Fe C Si Mn Ni S P Cr Ce Ti Al B max 4 max 0.07 max 0.6 max 0.4 69.078 - 78 max 0.007 max 0.015 19 - 22 max 0.02 2.4 - 2.8 0.6 - 1 max 0.01
Comment: Ni is a basis; the percentage of Ni is given approximately. Mechanical properties under Ò=20o Ñ of the material KHN77TYUR ( HN77TJUR, ÕÍ77ÒÞÐ ) .
Assortment
Dimension
Direct.
s â
s T
d 5
y
KCU
Heat treatment - mm - MPa MPa % % kJ / m2 - Sheet to 3.9 930 20 Guenching 1080 - 1120o C,Cooling water, Ageing 750o C, 5h, Bar longitudinal 950 620 15 15 400 Guenching 1080o C, 8h, air, Ageing 700o C, 16h, air,
Brinell hardness of the material KHN77TYUR ( HN77TJUR, ÕÍ77ÒÞÐ ) (quenching) , HB 10 -1 = 255 - 321 MPa
Physical properties of the material KHN77TYUR ( HN77TJUR, ÕÍ77ÒÞÐ ) . 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 1.96 12.6 8200 100 12.67 13.9 8180 1247 200 12.9 15.6 8140 1262 300 13.3 17.2 8110 1282 400 13.8 18.8 8070 1300 500 14.2 20.9 8040 1308 600 1.57 14.6 23.5 8000 1288 700 1.47 15.1 25.1 7960 1272 800 1.28 15.5 28.2 7920 1253 900 16.2 31.1 7870 1232 1000 16.8 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material KHN77TYUR ( HN77TJUR, ÕÍ77ÒÞÐ ) . 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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