Metals -> High-temperature or heat-resistant steel and alloy -> Low alloy high-temperature steel Characteristics of the material 12KH2MFSR ( 12H2MFSR, 12Õ2ÌÔÑÐ ).
Material : 12KH2MFSR ( 12H2MFSR, 12Õ2ÌÔÑÐ ) Classification : Low alloy high-temperature steel
Chemical composition in % of the material 12KH2MFSR ( 12H2MFSR, 12Õ2ÌÔÑÐ ) . C Si Mn Ni S P Cr Mo V Cu B 0.08 - 0.15 0.4 - 0.7 0.4 - 0.7 max 0.25 max 0.025 max 0.025 1.6 - 1.9 0.5 - 0.7 0.2 - 0.35 max 0.25 0.002 - 0.005
Temperature of critical points of the grade 12KH2MFSR ( 12H2MFSR, 12Õ2ÌÔÑÐ ).
Ac1 = 775 - 825 , Ac3 (Acm ) = 865 - 925 , Ar3 (Arcm ) = 770 - 820 , Ar1 = 715 - 765
Mechanical properties under Ò=20o Ñ of the material 12KH2MFSR ( 12H2MFSR, 12Õ2ÌÔÑÐ ) .
Assortment Dimension Direct. s â s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Pipe Æ 42 x 6 240 480 24 2700 Pipe Æ 32 x 5 530 330 22 2300 Pipe Æ 273 x 36 600 440 24 72 1900
Physical properties of the material 12KH2MFSR ( 12H2MFSR, 12Õ2ÌÔÑÐ ) . 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 29.4 7800 100 10.95 200 11.95 300 12.65 400 13.15 500 13.7 600 14 700 14.3 T E 10- 5 a 10 6 l r C R 10 9
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]
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