1.8519 (31CrMoV9) Nitriding Steel
1.8519 (31CrMoV9)
1.8519 is a CrMoV-alloyed nitriding steel with a surface hardness after nitriding of minimum 800 HV.
What is 1.8519 (31CrMoV9) (KHD) Steel Material?
1.8519 (31CrMoV9) steel is a nitriding steel alloyed with chromium, molybdenum, and vanadium, capable of achieving a surface hardness of at least 800 HV after nitriding. This type of steel is commonly used in applications requiring high-temperature resistance, particularly in industries such as energy, petrochemicals, and steel manufacturing.
What is the Hardness Value of 1.8519 (31CrMoV9) (KHD) Steel?
The nitrided hardness value of 1.8519 (31CrMoV9) steel ranges from 27 to 33 HRC.
What are the Mechanical Properties of 1.8519 (31CrMoV9) (KHD) Steel?
Where is 1.8519 (31CrMoV9) (KHD) Steel Used?
1.8519 (31CrMoV9) steel is used in the production of parts that operate at high temperatures. For instance, it is utilized in the manufacturing of high-pressure steam boilers, turbines, generators, heat exchangers, and other equipment used in energy plants. Additionally, it finds application in industries like petrochemicals and steel manufacturing that require high-temperature performance.
1.8519 (31CrMoV9) material is also employed in other industries such as automotive, aviation, and machinery. This material is used in producing parts like engine components, wheels, gearboxes, bearings, and other components requiring wear resistance, especially in high-temperature environments. 1.8519 (31CrMoV9) steel is considered an ideal material for parts operating at high temperatures and is widely used in high-performance applications.
Compared to 1.8519 (31CrMoV9), nitriding steels like 1.8550 (34CrAINi7) have a deeper nitrided layer due to the presence of Ni and Al.
What is the Price of 1.8519 (31CrMoV9) (KHD) Material?
Chemical composition
Code: 1.8519, KHD, 31CrMoV4
Carbon |
Chromium |
Molybdenum |
Vanadium |
C |
Cr |
Mo |
V |
0,31 |
2,50 |
0,20 |
0,15 |
Heat treatment
|
|
Temperature |
Cooling |
Cooling |
Soft annealing |
680 - 720°C |
Furnace |
|
Normalizing |
870 - 900°C |
Air |
|
Hardening |
840 - 880°C |
Oil, Water |
See Tempering Diagram |
Mechanical Properties
Mechanical Properties |
27 - 33 |
HRC |
Tensile strength |
850 - 1300 |
N/mm2 |
Yield strength |
600 - 900 |
kN/mm2 |
Modulus of elasticity L=5D |
9 - 12 |
% |
Toughness |
25 - 40 |
CVN (J) |
Physical Properties
Coefficient of thermal expansion |
12,1 - 13,6 |
1/K * 10-6 |
Thermal conductivity (20°C) |
25,7 |
W/mK |
Density |
7,80 |
g/cm3 |
