20MNCR5
20MNCR5 Grade Introduction:
20MnCr5 steel is a low alloyed engineering case hardening steel for parts that require core tensile strength of 1000 – 1300 N/mm² and good wearing resistance.This steel is carburizing steel used for components requiring high wear resistance surface, coupled with tough cores to resist shock loads and strength to give large service life.
20MNCR5 Grade Application:
- Gearings in rotating machinery
- Valve bodies
- Pumps
- Fittings
- High-load wheels
- Bolts and double-headed bolts
- Gears
- Internal combustion engines
- Electric locomotives
- Machine tools
- Tractors
- Steel rolling equipment
- Boring machines
- Railway vehicles
- Mining machinery transmission shafts
- Steel balls
- Roller and shaft sleeves
20MNCR5 Equivalent Grades:
| Standard |
ASTM A29/A29M |
DIN EN 10083/3 |
JIS G4053 |
DIN/T DIN17210 |
20MNCR5 Chemical Composition:
| Element |
C |
Si |
Mn |
P |
S |
Cr |
| Content (%) |
0.17-0.22 |
≤0.40 |
1.10～1.40 |
≤0.035 |
≤0.035 |
1.00～1.30 |
Mechanical Properties:
| Property |
Tensile (MPa) |
Yield (MPa) |
Bulk Modulus (GPa) |
Shear Modulus (GPa) |
Poisson’s Ratio |
Thermal Conductivity (W/mK) |
| Value |
520 |
415 Min |
140 |
80 |
0.27-0.30 |
46.6 |
Physical Properties:
| Thermal Conductivity at °C |
20 |
350 |
700 |
| W/(m*K) |
11.7 |
12.8 |
13.5 |
Forging Properties:
Hot Forming temperature: 1100-850 °C.
Stress Relieving:
Stress-relief annealing °C – 550-600