Structural 30CrMnSiA alloy steel plate has high strength, good hardenability and sufficient toughness after quenching and tempering. Meanwhile, 30CrMnSiA alloy steel plate has good process ability, small processing deformation and good fatigue resistance and it is mainly used in various special wear parts such as automobiles and airplanes.
Structural 30CrMnSiA alloy steel platechemical composition:
| Grade |
C |
Si |
Mn |
P |
S |
| 30CrMnSiA |
0.28-0.34 |
0.90~1.20 |
0.80~1.10 |
≤0.025 |
≤0.025 |
Mechanical properties range of structural 30CrMnSiA alloy steel plate:
Note: the actual mechanical properties of of structural 30CrMnSiA alloy steel plate shall be based on the steel factory warranty.
Tensile strengthσb(MPa):≥1080
Yield strengthσs(MPa):≥835
Elongationδ5(%):≥10
Section shrinkage ratioψ(%):≥45
Impact energy Akv(J):≥39
Impact toughness valueαkv(J/cm2):≥49
Hardness: ≤229HB
Sample size: sample blank size is 18mm
The features of structural 30CrMnSiA alloy steel plate:
After quenching and tempering, structural 30CrMnSiA alloy steel plate has high strength and toughness and good hardenability. After conditioning, structural 30CrMnSiA alloy steel plate can be used as grinding wheel shaft, gear and chain wheel. 30CrMnSiA alloy steel plate has good workability, small deformation and good fatigue performance.
The heat treatment process of structural 30CrMnSiA alloy steel plate:
Quenching at 880℃, oil cooling, tempering at 540℃, water cooling and oil cooling.
Structural 30CrMnSiA alloy steel plate application:
Structural 30CrMnSiA alloy steel plate is used for shaft, piston parts, automobile, aircraft and other special wear resistant parts.
