Metals -> High-temperature or heat-resistant steel and alloy -> High alloy high-temperature steel Characteristics of the material 18KH11MFB ( 18H11MFB, 18Х11МФБ ).
Material : 18KH11MFB ( 18H11MFB, 18Х11МФБ ) Classification : High alloy high-temperature steel
Chemical composition in % of the material 18KH11MFB ( 18H11MFB, 18Х11МФБ ) . C Si Mn Ni S P Cr Mo V Nb 0.15 - 0.21 max 0.6 0.6 - 1 0.5 - 1 max 0.025 max 0.03 10 - 11.5 0.8 - 1.1 0.2 - 0.4 0.2 - 0.45
Mechanical properties under Т=20o С of the material 18KH11MFB ( 18H11MFB, 18Х11МФБ ) .
Assortment Dimension Direct. s в s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - longitudinal 730 570 16 61 Normalizing 1100 - 1140o C,Drawing 750o C, 10h,
Physical properties of the material 18KH11MFB ( 18H11MFB, 18Х11МФБ ) . 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 2.28 7850 100 2.22 10.3 21.4 485 200 2.13 10.6 25.1 530 300 2.05 10.8 25.9 590 400 1.93 11.3 26.3 667 500 1.8 11.7 27.2 770 600 11.8 28 900 700 12 800 12.4 T E 10- 5 a 10 6 l r C R 10 9
Specification :
Mechanical properties : s в - 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]
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