Tool alloy steel Characteristics for grade 3KH2V8F ( 3Х2В8Ф )
| Grade : | 3KH2V8F ( 3Х2В8Ф ) |
| Substitute: | 4Х5В2ФС, 4Х2В2МФС, 5Х3В3МФС |
| Classification : | Die tool steel |
| Equivalent grades: | |
Chemical composition in % for grade 3KH2V8F ( 3Х2В8Ф ) | C | Si | Mn | Ni | S | P | Cr | Mo | W | V | Cu |
| 0.3 - 0.4 | 0.15 - 0.4 | 0.15 - 0.4 | max 0.35 | max 0.03 | max 0.03 | 2.2 - 2.7 | max 0.5 | 7.5 - 8.5 | 0.2 - 0.5 | max 0.03 |
Temperature of critical points for grade 3KH2V8F ( 3Х2В8Ф ). | Ac1 = 800 , Ac3(Acm) = 850 , Ar3(Arcm) = 750 , Ar1 = 690 , Mn = 380 |
Mechanical properties under Т=20oС for grade 3KH2V8F ( 3Х2В8Ф ) | Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Steel | | | 1530 | 1390 | 12 | 36 | 200 | Guenching 1130oC, oil, Drawing 650oC, 2h, |
| Brinell hardness for 3KH2V8F ( 3Х2В8Ф ) (annealing) , | HB 10 -1 = 241 MPa |
Technological properties for grade 3KH2V8F ( 3Х2В8Ф ) | Weldability: | is not used. |
| Flakes : | predisposed |
| Temper brittleness: | predisposed |
Physical properties for grade 3KH2V8F ( 3Х2В8Ф ) | 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 | 2.24 | | | | | |
| 100 | 2.18 | | 25 | | | 250 |
| 200 | 2.11 | | 27 | | | 200 |
| 300 | 2.04 | | 29 | | | 170 |
| 400 | 1.96 | | 40 | | | 140 |
| 500 | 1.87 | | 46 | | | 120 |
| 600 | 1.77 | | 50 | | | |
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Equivalent steels for grade 3KH2V8F ( 3Х2В8Ф ) Warning! Indicated both exact and nearest equivalents. | USA | Germany | Japan | France | England | European | Italy | Spain | China | Bulgaria | Poland | Romania | Czechia | Austria | South Korea |
| - | DIN,WNr | JIS | AFNOR | BS | EN | UNI | UNE | GB | BDS | PN | STAS | CSN | ONORM | KS |
| | | 1.2581 | | 30WCrV17-2 | | X30WCrV5-3 | | X30WCrV9-3 | | | | | | | | | | | | | | |
Types of delivery of grade 3KH2V8F ( 3Х2В8Ф ) | В22 - Graded and shaped rolling |
| B31 - Blanks, Blanks, Slabs |
| В32 - Graded and shaped rolling |
| B33 - Sheets and Strips |
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 |
3KH2V8F ( 3Х2В8Ф ) - Die tool 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
