30CrMnSi is an alloy structural steel with high strength, high toughness and good wear resistance.
Features of 30CrMnSi alloy steel:
High strength and toughness: 30CrMnSi steel has high strength and toughness and can withstand large loads and shocks.
Good wear resistance: After heat treatment, the steel has a high surface hardness and good wear resistance.
Excellent machining performance: 30CrMnSi alloy steel plate has good machining performance and welding performance, easy to carry out a variety of machining and connection operations.
High hardenability, medium cold deformation plasticity, good cutting performance. However, there is a tempering brittleness tendency and the transverse impact toughness is poor.
The main chemical components of 30CrMnSi alloy steel include carbon (C: 0.26-0.34%), silicon (Si: 0.90-1.20% or 1.00%-1.30%), manganese (Mn: 0.80-1.10%), chromium (Cr: 0.80-1.10% or 0.80%-1.0%), and small amounts of phosphorus (P≤0.035%) and sulfur (S≤0.035%).
Mechanical properties of 30CrMnSi alloy steel:
Tensile strength (σb) : ≥1080MPa (some data indicate that it can reach more than 980MPa)
Yield strength (σs) : ≥835MPa
Elongation (δ5) : ≥10%
Section shrinkage (ψ) : ≥339%
Impact power (Akv) : ≥78J
Hardness (HBW) : ≤229HBW
Application of 30CrMnSi alloy steel:
Manufacturing important parts: Because 30CrMnSi has high strength and high toughness, it is often used to manufacture various important parts with high load and high speed, such as gears, shafts, clutches, sprockets, sand wheels, shaft bushings, bolts, nuts, etc.
Wear-resistant parts: Because the steel has good wear resistance, it is also used to manufacture wear-resistant parts with low operating temperature.
Variable load welding components: such as high-pressure blower blades, valve plates and non-corrosive pipes and pipes, can withstand the role of variable loads.
Aviation field: 30CrMnSi is also widely used in the aviation field, mainly because of its excellent mechanical properties, economy and good weldability.
