Metals -> High-temperature or heat-resistant steel and alloy -> High alloy high-temperature steel Characteristics of the material 40KH10S2M ( 40H10S2M, 40Х10С2М ).
Material : 40KH10S2M ( 40H10S2M, 40Х10С2М ) Classification : High alloy high-temperature steel
Chemical composition in % of the material 40KH10S2M ( 40H10S2M, 40Х10С2М ) . C Si Mn Ni S P Cr Mo Ti Cu 0.35 - 0.45 1.9 - 2.6 max 0.8 max 0.6 max 0.025 max 0.03 9 - 10.5 0.7 - 0.9 max 0.2 max 0.3
Temperature of critical points of the grade 40KH10S2M ( 40H10S2M, 40Х10С2М ).
Ac1 = 810 , Ac3 (Acm ) = 950 , Ar3 (Arcm ) = 845 , Ar1 = 700
Mechanical properties under Т=20o С of the material 40KH10S2M ( 40H10S2M, 40Х10С2М ) .
Assortment
Dimension
Direct.
s в
s T
d 5
y
KCU
Heat treatment - mm - MPa MPa % % kJ / m2 - Bar Ж 60 930 735 10 35 200 Guenching 1010 - 1050o C, air, Drawing 720 - 780o C, oil,
Brinell hardness of the material 40KH10S2M ( 40H10S2M, 40Х10С2М ) (annealing) , HB 10 -1 = 197 - 269 MPa
Physical properties of the material 40KH10S2M ( 40H10S2M, 40Х10С2М ) . 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 2.14 17 7620 100 2.11 10 18 7610 906 200 2.05 11 20 958 300 2.02 11 22 1010 400 1.96 11 22 532 1062 500 1.87 24 561 1114 600 1.72 25 586 1166 700 1.51 26 1216 800 1.29 11 7430 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 40KH10S2M ( 40H10S2M, 40Х10С2М ) . Weldability: hard weldability. Flakes : not 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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