| Grade : | KH12 ( Х12 ) |
| Classification : | Die tool steel |
| Equivalent grades: | Go here |
Chemical composition in % for grade KH12 ( Х12 )
| C | Si | Mn | Ni | S | P | Cr | Mo | W | V | Ti | Cu |
| 2 - 2.2 | 0.1 - 0.4 | 0.15 - 0.45 | max 0.4 | max 0.03 | max 0.03 | 11.5 - 13 | max 0.2 | max 0.2 | max 0.15 | max 0.03 | max 0.3 |
Temperature of critical points for grade KH12 ( Х12 ).
| Ac1 = 810 , Ac3(Acm) = 835 , Ar3(Arcm) = 770 , Ar1 = 755 , Mn = 180 |
| Brinell hardness for KH12 ( Х12 ) (annealing) , GOST 5950-2000 | HB 10 -1 = 255 MPa |
Equivalent steels for grade KH12 ( Х12 )
| USA | Germany | Japan | France | England | European | Italy | Spain | China | Sweden | Bulgaria | Poland | Romania | Czechia | Austria | South Korea | |||||||||||||||||||||||||||||||
| - | DIN,WNr | JIS | AFNOR | BS | EN | UNI | UNE | GB | SS | BDS | PN | STAS | CSN | ONORM | KS | |||||||||||||||||||||||||||||||
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Types of delivery of grade KH12 ( Х12 )
| В32 - Graded and shaped rolling |
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] |
KH12 ( Х12 ) - 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
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