Metals -> Structural steel -> Alloy structurall steel Characteristics of the material 18KH2N4VÀ ( 18H2N4VÀ, 18Õ2Í4ÂÀ ).
Material : 18KH2N4VÀ ( 18H2N4VÀ, 18Õ2Í4ÂÀ ) Classification : Alloy structurall steel
Chemical composition in % of the material 18KH2N4VÀ ( 18H2N4VÀ, 18Õ2Í4ÂÀ ) . C Si Mn Ni S P Cr W Cu 0.14 - 0.2 0.17 - 0.37 0.25 - 0.55 4 - 4.4 max 0.025 max 0.025 1.35 - 1.65 0.8 - 1.2 max 0.3
Mechanical properties under Ò=20o Ñ of the material 18KH2N4VÀ ( 18H2N4VÀ, 18Õ2Í4ÂÀ ) .
Assortment
Dimension
Direct.
s â
s T
d 5
y
KCU
Heat treatment - mm - MPa MPa % % kJ / m2 - Bar Æ 15 1050 800 12 50 Guenching 950o C, oil, Drawing 550o C, air,
Brinell hardness of the material 18KH2N4VÀ ( 18H2N4VÀ, 18Õ2Í4ÂÀ ) (annealing) , HB 10 -1 = 269 MPa
Physical properties of the material 18KH2N4VÀ ( 18H2N4VÀ, 18Õ2Í4ÂÀ ) . 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 7950 100 11.7 36 7930 200 12.2 36 7900 300 12.7 35 7860 400 13.1 35 7830 500 13.5 34 7800 600 13.9 33 7760 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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