Metals -> Structural steel -> Alloy structurall steel Characteristics of the material 30KHN2MFÀ ( 30HN2MFÀ, 30ÕÍ2ÌÔÀ ).
Material : 30KHN2MFÀ ( 30HN2MFÀ, 30ÕÍ2ÌÔÀ ) Substitute: 30ÕÍ2ÂÔÀ Classification : Alloy structurall steel
Chemical composition in % of the material 30KHN2MFÀ ( 30HN2MFÀ, 30ÕÍ2ÌÔÀ ) . C Si Mn Ni S P Cr Mo V Cu 0.27 - 0.34 0.17 - 0.37 0.3 - 0.6 2 - 2.4 max 0.025 max 0.025 0.6 - 0.9 0.2 - 0.3 0.1 - 0.18 max 0.3
Temperature of critical points of the grade 30KHN2MFÀ ( 30HN2MFÀ, 30ÕÍ2ÌÔÀ ).
Ac1 = 720 , Ac3 (Acm ) = 830 , Ar3 (Arcm ) = 555 , Ar1 = 365
Mechanical properties under Ò=20o Ñ of the material 30KHN2MFÀ ( 30HN2MFÀ, 30ÕÍ2ÌÔÀ ) .
Assortment Dimension Direct. s â s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Bar Æ 25 880 785 10 40 880 Guenching and drawing
Brinell hardness of the material 30KHN2MFÀ ( 30HN2MFÀ, 30ÕÍ2ÌÔÀ ) (annealing) , HB 10 -1 = 269 MPa
Physical properties of the material 30KHN2MFÀ ( 30HN2MFÀ, 30ÕÍ2ÌÔÀ ) . 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 2.16 36 333 100 2.07 11.1 35 466 200 2.06 11.7 35 508 300 1.88 12.3 34 529 400 1.76 12.9 32 567 500 1.69 13.3 31 588 600 13.7 29 700 28 800 27 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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