Which is better, 27SiMn steel or 35CrMnSi material

Which is better, 27SiMn steel or 35CrMnSi material?

1. Chemical composition difference
27SiMn steel chemical elements: C: 0.24-0.32, Si: 1.10-1.40, Mn: 1.10-1.40.
35CrMnSi material chemical elements: C: 0.32-0.39, Si: 1.10-1.40, Mn: 0.80-1.10, Cr: 1.10-1.40.

2. Differences in mechanical properties
Mechanical properties of 27SiMn steel: tensile strength 980 MPa; yield strength: 835 MPa; elongation after fracture: 12%; reduction of area: 40%; impact energy: 39J.

Mechanical properties of 35CrMnSi material: tensile strength 1620 MPa; yield strength: 1280 MPa; elongation after fracture: 9%; reduction of area: 40%; impact energy: 31J.

3. Characteristics and Application
27SiMn steel is a kind of alloy steel, and 35CrMnSi material is a kind of low alloy ultra-high strength steel.
27SiMn steel has high strength and wear resistance, high hardenability, medium plasticity and good machinability during cold deformation. 27SiMn steel can be used to make hot stamping parts with high toughness and high wear resistance, and parts used without heat treatment or normalizing, such as tractor track pin.

35CrMnSi material is used to manufacture medium speed, heavy load, high strength parts and high strength components, such as aircraft landing gear and high pressure blast.