Metals -> High-temperature or heat-resistant steel and alloy -> Low alloy high-temperature steel Characteristics of the material 15KH5M ( 15H5M, 15Х5М ).
Material : 15KH5M ( 15H5M, 15Х5М ) Classification : Low alloy high-temperature steel
Chemical composition in % of the material 15KH5M ( 15H5M, 15Х5М ) . C Si Mn Ni S P Cr Mo W V Ti Cu max 0.15 max 0.5 max 0.5 max 0.6 max 0.025 max 0.03 4.5 - 6 0.45 - 0.6 max 0.3 max 0.05 max 0.03 max 0.2
Temperature of critical points of the grade 15KH5M ( 15H5M, 15Х5М ).
Ac1 = 815 , Ac3 (Acm ) = 848 , Ar3 (Arcm ) = 775 , Ar1 = 718
Mechanical properties under Т=20o С of the material 15KH5M ( 15H5M, 15Х5М ) .
Assortment Dimension Direct. s в s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Bar Ж 90 390 215 22 50 1180 Annealing 840 - 860o C,Cooling oven, Sheet trick 470 235 18 Annealing 840 - 870o C,Cooling air,
Brinell hardness of the material 15KH5M ( 15H5M, 15Х5М ) (heat treatment) , HB 10 -1 = 170 MPa Brinell hardness of the material 15KH5M ( 15H5M, 15Х5М ) (hot-rolled, annealing) , HB 10 -1 = 217 MPa
Physical properties of the material 15KH5M ( 15H5M, 15Х5М ) . 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 2.11 7750 430 100 11.3 37 7730 483 200 11.6 36 7700 300 11.9 35 7670 400 1.78 12.2 34 7640 500 1.45 12.3 33 7610 600 1.02 12.5 7580 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 15KH5M ( 15H5M, 15Х5М ) . Weldability: hard weldability. Flakes : predisposed Temper brittleness: not predisposed
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]
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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