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18KHG ( 18ХГ )

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  • 18KHG ( 18ХГ )
Grade :18KHG ( 18ХГ )
Substitute:10, 20
Classification :High quality structural carbon steel
Equivalent grades:Go here
Chemical composition in % for grade 15 ( 15 )
CSiMnNiSPCrCu
0.12 - 0.190.17 - 0.37 0.9 - 1.2max 0.3max 0.04max 0.035max 0.0350.9 - 1.2max 0.3
Temperature of critical points for grade 18KHG ( 18ХГ ).
Ac1 = 765 , Ac3(Acm) = 840
Mechanical properties under Т=20oС for grade 18KHG ( 18ХГ )
,
AssortmentDimension Direct.σBσTδ5ψKCUHeat treatment
-(mm)- MPaMPa%%kJ/m²-
Bar, GOST 4543-71Ø 15880 7351040Guenching 880oC, oil, Drawing 200oC, air
Brinell hardness for 18KHG ( 18ХГ ) (annealing) , GOST 4543-71HB 10 -1 = 187 MPa
Technological properties for grade 15 ( 15 )
Flakes :predisposed
Temper brittleness:predisposed
Equivalent steels for grade 08KH18N10T ( 08Х18Н10Т )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanFranceEnglandEuropeanItalyBelgiumSpainChinaSwedenBulgariaHungaryPolandRomaniaCzechiaFinlandAustraliaSSouth Korea
-DIN,WNrJISAFNORBSENUNINBNUNEGBSSBDSMSZPNSTASCSNONORMSNVKS
5115 5120 G51150 G51200 H512001.7131 1.7147 16MnCr5 16MnCrS5 20MnCr5 20MnCrS5SMnC420 SMnC420H16MC4 16MC5 16MnCr5RR 20MC516MnCr5 20MnCr5 527M17 527M20 590H17 590M171.7131 1.7147 16MnCr5 16MnCr5KD 20MnCr5 20MnCrB516MnCr5 20MnCr516MnCr516MnCr5 20MnCr5 F.151615CrMn 20CrMn2127 217316ChG 18ChGBC3 BC3Z15HG 16HG 18HGT 20HG17MnCr10 18MnCr10q 18MnCr11 20MnCr1214220 14221 14222 1422320MnCr55120 5120HSMnC420H
Types of delivery of grade 18KHG ( 18ХГ )
  • В22 - Graded and shaped rolling
  • B23 - Sheets and Strips
  • В32 - Graded and shaped rolling
Specification
Mechanical properties :

σB - Tensile strength [MPa]

σT - Yield stress [MPa]

δ5 - Specific elongation at fracture [%]

ψ - Reduction of area [%]

KCU - Impact strength [kJ/m²]

HB - Brinell hardness [MPa]

Physical properties :

T - Test temperature [Grade]

E - Young modulus [MPa]

α - Coefficient of linear expansion (20° - T) [1/Grade]

λ - Thermal (heat) condition coefficient [Watt/(m·Grade)]

ρ - Density [kg/m³]

C - Specific heat (range 20° - 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

18KHG ( 18ХГ ) - Alloy structurall steel: chemical composition, mechanical and physical properties, hardness

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