| Grade : | 38KH2YU ( 38Х2Ю ) ( 38ХЮ ) |
| Classification : | Alloy structurall steel |
| Equivalent grades: | Go here |
Chemical composition in % for grade 38KH2YU ( 38Х2Ю )
| C | Si | Mn | S | P | Cr | Al |
| 0.35 - 0.43 | 0.2 - 0.4 | 0.2 - 0.5 | max 0.035 | max 0.035 | 1.5 - 1.8 | 0.5 - 0.8 |
Temperature of critical points for grade 38KH2YU ( 38Х2Ю ).
| Ac1 = 810 , Ac3(Acm) = 880 |
Mechanical properties under Т=20oС for grade 38KH2YU ( 38Х2Ю )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Bar, GOST 4543-71 | Ø 30 | 880 | 735 | 10 | 45 | 780 | Guenching 930oC, water, Drawing 630oC, water, |
| Brinell hardness for 38KH2YU ( 38Х2Ю ) (annealing) , | HB 10 -1 = 229 MPa |
Technological properties for grade 38KH2YU ( 38Х2Ю )
| Weldability: | is not used. |
| Flakes : | not predisposed |
| Temper brittleness: | predisposed |
Equivalent steels for grade 38KH2YU ( 38Х2Ю )
| Germany | Czechia | |||
| DIN,WNr | CSN | |||
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Specification :
| Mechanical properties : | |
| sв | - Tensile strength , [MPa] |
| sT | - Yield stress, [MPa] |
| d5 | - 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 |
38KH2YU ( 38Х2Ю ) - Alloy structurall steel: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys
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