Metals -> High-temperature or heat-resistant steel and alloy -> Low alloy high-temperature steel Characteristics of the material 15KH2M2FBS ( 15H2M2FBS, 15Õ2Ì2ÔÁÑ ).
Material : 15KH2M2FBS ( 15H2M2FBS, 15Õ2Ì2ÔÁÑ ) Classification : Low alloy high-temperature steel
Chemical composition in % of the material 15KH2M2FBS ( 15H2M2FBS, 15Õ2Ì2ÔÁÑ ) . C Si Mn Ni S P Cr Mo V Nb Cu 0.13 - 0.18 0.7 - 1 0.5 - 0.8 max 0.3 max 0.03 max 0.03 1.8 - 2.3 1.2 - 1.5 0.25 - 0.4 0.08 - 0.15 max 0.3
Temperature of critical points of the grade 15KH2M2FBS ( 15H2M2FBS, 15Õ2Ì2ÔÁÑ ).
Ac1 = 780 - 830 , Ac3 (Acm ) = 1020 - 1040 , Ar3 (Arcm ) = 830
Mechanical properties under Ò=20o Ñ of the material 15KH2M2FBS ( 15H2M2FBS, 15Õ2Ì2ÔÁÑ ) .
Assortment Dimension Direct. s â s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Pipe longitudinal 550 380 18 50 600 Pipe dihedral 550 380 16 45 500 Forging longitudinal 640 450 17 50 500
Brinell hardness of the material 15KH2M2FBS ( 15H2M2FBS, 15Õ2Ì2ÔÁÑ ) , HB 10 -1 = 180 - 197 MPa
Physical properties of the material 15KH2M2FBS ( 15H2M2FBS, 15Õ2Ì2ÔÁÑ ) . 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 2.24 7850 450 100 2.19 12 34.8 460 200 34.3 520 300 2.05 34.1 600 400 14.5 33.9 670 500 1.87 33.7 770 600 1.76 33.5 950 700 1.64 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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