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Russian Metals
20KH23N18 ( 20Х23Н18 ) ( Х23Н18 ЭИ417 )
| Grade : | 20KH23N18 ( 20Х23Н18 ) ( Х23Н18 ЭИ417 ) |
| Substitute: | 20Х23Н13, 15Х25Т |
| Classification : | High alloy high-temperature steel |
| Equivalent grades: | Go here |
Chemical composition in % for grade 20KH23N18 ( 20Х23Н18 )
| C | Si | Mn | Ni | S | P | Cr |
|---|---|---|---|---|---|---|
| max 0.2 | max 1 | max 2 | 17 - 20 | max 0.02 | max 0.035 | 22 - 25 |
Mechanical properties under Т=20oС for grade 20KH23N18 ( 20Х23Н18 )
| Assortment | Dimension | Direct. | σB | σT | δ5 | ψ | KCU | Heat treatment |
|---|---|---|---|---|---|---|---|---|
| - | (mm) | - | MPa | MPa | % | % | kJ/m² | - |
| Pipe | Ø 212 x 60 | longitudinal | 500 | 200 | 35 | 50 | Guenching 1100 - 1150oC, air, | |
| Bar, GOST 5949-75 | longitudinal | 490 | 196 | 35 | 50 | Guenching 1100 - 1150oC, air, | ||
| Sheet trick, GOST 7350-77 | 540 | 265 | 35 | Guenching 1030 - 1130oC,Cooling water, | ||||
| Sheet thin, GOST 5582-75 | 510 | 245 | 35 | Guenching 1080 - 1150oC,Cooling water, | ||||
| Sheet thin, GOST 4986-79 | 570 | 19-38 | Guenching 1050 - 1080oC,Cooling air, |
Technological properties for grade 20KH13 ( 20Х13 )
| Weldability : | limited weldability. |
Physical properties for grade 20KH13 ( 20Х13 )
| T | E 10- 5 | α 10⁶ | λ | ρ | C | R 10⁹ |
|---|---|---|---|---|---|---|
| Grade | MPa | 1/Grade | Watt/(m·Grade) | kg/m3 | J/(kg·Grade) | Ohm·m |
| 20 | 2.04 | 13.8 | 7900 | 1000 | ||
| 100 | 14.9 | 15.9 | 538 | |||
| 200 | 15.7 | |||||
| 300 | 1.86 | 16.6 | 18.8 | |||
| 400 | 1.8 | 17.3 | 7760 | |||
| 500 | 1.73 | 17.5 | 7720 | |||
| 600 | 1.63 | 17.85 | 21.7 | 7670 | ||
| 700 | 1.53 | 17.85 | 7620 | |||
| 800 | 1.44 | 13 | ||||
| 900 | 7540 | |||||
| T | E 10- 5 | α 10⁶ | λ | ρ | C | R 10⁹ |
Equivalent steels for grade 08KH18N10T ( 08Х18Н10Т )
Warning! Indicated both exact and nearest equivalents.
| USA | Germany | Japan | France | England | European | Italy | Belgium | Spain | China | Sweden | Bulgaria | Hungary | Poland | Romania | Czechia | Australia | South Korea |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| - | DIN,WNr | JIS | AFNOR | BS | EN | UNI | NBN | UNE | GB | SS | BDS | MSZ | PN | STAS | CSN | AS | KS |
| 310 310S 314 S31000 S31008 S31400 | 1.4845 CrNi25-20 X12CrNi25-21 X15CrNiSi25-20 X16CrNi25-20 X8CrNi25-21 X8CrNiSi25-21 | SUH310 SUS310 SUS310S | Z12CN25-20 Z12CN26-21 Z8CN25-20 | 310S16 310S24 310S25 310S31 X8CrNi25-21 | 1.4843 1.4845 X8CrNi25-21 | X22CrNi25-20 X6CrNi25-20 X6CrNi25-21 X6CrNi25-21KG | F.331 X8CrNi25-21 | 1Cr25Ni20Si2 | 2361 7RE10AE 8RE10R | Ch23N18 | H9 | A45.47 C22E | G205 H23N18 H25N20S2 | 12NiCr250 | 17255 | 310S | STS310S |
Types of delivery of grade 20KH23N18 ( 20Х23Н18 )
- В22 - Graded and shaped rolling
- B23 - Sheets and Strips
- В32 - Graded and shaped rolling
- B33 - Sheets and Strips
- B34 - Ribbons
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
20KH23N18 ( 20Х23Н18 ) - High alloy 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