Metals -> High-temperature or heat-resistant steel and alloy -> High alloy high-temperature steel Characteristics of the material 12KH25N16G7ÀR ( 12H25N16G7ÀR, 12Õ25Í16Ã7ÀÐ ).
Material : 12KH25N16G7ÀR ( 12H25N16G7ÀR, 12Õ25Í16Ã7ÀÐ ) Classification : High alloy high-temperature steel
Chemical composition in % of the material 12KH25N16G7ÀR ( 12H25N16G7ÀR, 12Õ25Í16Ã7ÀÐ ) . Fe C Si Mn Ni S P Cr B 47.815 - 57 max 0.12 max 1 5 - 7 15 - 18 max 0.02 max 0.035 23 - 26 max 0.01
Mechanical properties under Ò=20o Ñ of the material 12KH25N16G7ÀR ( 12H25N16G7ÀR, 12Õ25Í16Ã7ÀÐ ) .
Assortment Dimension Direct. s â s T
d 5
y KCU Heat treatment - mm - MPa MPa % % kJ / m2 - Sheet dihedral 1000 25 Heating 1050 - 1080o C, air, Profile longitudinal 700 330 40 Heating 1100 - 1150o C, air, Sheet thin 980 35 Guenching 1050 - 1100o C,Cooling water, Bars to 60 690 325 40 45 Guenching 1050 - 1150o C,Cooling air,
Physical properties of the material 12KH25N16G7ÀR ( 12H25N16G7ÀR, 12Õ25Í16Ã7ÀÐ ) . 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 1.965 13.82 7820 1060 100 1.894 16.6 15.07 1100 200 1.815 16.2 16.33 1170 300 1.74 16.8 17.59 1200 400 1.66 17.4 19.26 1240 500 1.595 18 20.94 1280 600 1.495 18.3 22.19 1310 700 1.41 18.5 23.87 1330 800 1.335 18.7 25.54 1360 900 1.3 18.9 27.63 1390 T E 10- 5 a 10 6 l r C R 10 9
Technological properties of the material 12KH25N16G7ÀR ( 12H25N16G7ÀR, 12Õ25Í16Ã7ÀÐ ) . Weldability: without limitations.
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]
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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