| Grade : | 20KH13 ( 20Х13 ) ( 2Х13 ) |
| Substitute: | 12Х13, 14Х17Н2 |
| Classification : | Corrosion-resistant high-temperature steel |
| Equivalent grades: | Go here |
Chemical composition in % for grade 20KH13 ( 20Х13 )
| C | Si | Mn | Ni | S | P | Cr |
| 0.16 - 0.25 | max 0.6 | max 0.6 | max 0.6 | max 0.025 | max 0.03 | 12 - 14 |
Temperature of critical points for grade 20KH13 ( 20Х13 ).
| Ac1 = 820 , Ac3(Acm) = 950 , Ar1 = 780 |
Mechanical properties under Т=20oС for grade 20KH13 ( 20Х13 )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Sheet, GOST 5582-75 | 1 - 4 | dihedral | 490 | 20 | Drawing 740 - 800oC, | |||
| Bar, GOST 5949-75 | 650-830 | 440-635 | 10-16 | 50-55 | 590-780 | Guenching and drawing | ||
| Bar, GOST 18907-73 | 510-780 | 14 | ||||||
| Bar, GOST 18968-73 | 670 | 490-655 | 18 | 50 | 690 | Normalizing and drawing | ||
| Forging, GOST 25054-81 | to 600 | longitudinal | 647 | 441 | 14-16 | 40-50 | 390-640 | Guenching and drawing |
| Sheet trick, GOST 7350-77 | 510 | 375 | 20 | Normalizing |
| Brinell hardness for 20KH13 ( 20Х13 ) (annealing) , Bar GOST 5949-75 | HB 10 -1 = 126 - 197 MPa |
| Brinell hardness for 20KH13 ( 20Х13 ) (normalize, tempering) , Bar GOST 18968-73 | HB 10 -1 = 207 - 241 MPa |
| Brinell hardness for 20KH13 ( 20Х13 ) , Forging GOST 25054-81 | HB 10 -1 = 197 - 248 MPa |
Technological properties for grade 20KH13 ( 20Х13 )
| Weldability: | limited weldability. |
| Flakes : | not predisposed |
| Temper brittleness: | predisposed |
Physical properties for grade 20KH13 ( 20Х13 )
| 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 | 2.18 | 23 | 7670 | 588 | ||
| 100 | 2.14 | 10.1 | 26 | 7660 | 461 | 653 |
| 200 | 2.08 | 11.2 | 26 | 7630 | 523 | 730 |
| 300 | 2 | 11.5 | 26 | 7600 | 565 | 800 |
| 400 | 1.89 | 11.9 | 26 | 7570 | 628 | 884 |
| 500 | 1.81 | 12.2 | 27 | 7540 | 691 | 952 |
| 600 | 1.69 | 12.8 | 26 | 7510 | 775 | 1022 |
| 700 | 12.8 | 26 | 7480 | 963 | 1102 | |
| 800 | 13 | 27 | 7450 | |||
| 900 | 28 | |||||
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Equivalent steels for grade 20KH13 ( 20Х13 )
| USA | Germany | Japan | France | England | European | Italy | Spain | China | Sweden | Poland | Czechia | ||||||||||||||||||||
| - | DIN,WNr | JIS | AFNOR | BS | EN | UNI | UNE | GB | SS | PN | CSN | ||||||||||||||||||||
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Types of delivery of grade 20KH13 ( 20Х13 )
| B03 - Metal forming treatment. Forgings |
| В22 - Graded and shaped rolling |
| B23 - Sheets and Strips |
| В32 - Graded and shaped rolling |
| B33 - Sheets and Strips |
| B34 - Ribbons |
| В62 - Steel pipes and connecting parts to them |
| B73 - Steel Alloy Wire |
| B76 - Metal nets |
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 |
20KH13 ( 20Х13 ) - Corrosion-resistant high-temperature 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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