30CrMnSiNi2A Mechanical Properties

See many friends are searching for 30CrMnSiNi2A mechanical properties, 30CrMnSiNi2A yield strength and other problems, just know that many people do not have a complete concept of 30CrMnSiNi2A performance values. Today let the mold steel customer service to explain the mystery for you.

30CrMnSiNi2A is an ultra-high strength steel, which has good hardenability and toughness. With the increase of carbon content, the strength increases, while the plasticity and toughness decrease. The increase of silicon content increases the strength of the steel, the plasticity gradually decreases, the toughness does not decrease, the increase of manganese content reduces the strength of the steel slightly, but does not damage the toughness, adding a certain amount of molybdenum has little effect on the strength and plasticity of the steel, but improves the toughness of the steel.

30CrMnSiNi2A after oil quenching, low temperature tempering (250-300℃) strength ≥1700MPA, isothermal quenching can be carried out in (180-220℃) two temperature range, in order to ensure that 30CrMnSiNi2A has a high yield strength, And in order to maximize the toughness and plasticity of 30CrMnSiNi2A, after isothermal quenching should be higher than the decomposition temperature of residual austenite, and as close as possible to the temperature of tempering brittleness decline, so as to ensure a high fracture toughness and low fatigue crack growth rate.

After heat treatment, 30CrMnSiNi2A can obtain high strength, good plasticity and toughness, good fatigue resistance and fracture toughness, and low fatigue crack growth rate. High hardenability, machinability and weldability is good, but it is more sensitive to notch and hydrogen embrittlement (including environmental hydrogen embrittlement). It should be used as important structural components such as high-strength connectors and shaft parts.

Now let's get down to business and talk about the mechanical properties of 30CrMnSiNi2A. First, we will provide you with the physical properties of 30CrMnSiNi2A:

Mechanical properties of 30CrMnSiNi2A:

Tensile strength σb (MPa) : 1)1767; 2) 1627
Elongation δ5 (%) : 1)12; 2) 13
Shrinkage of section ψ (%) : 50
Impact toughness value αku (J/cm2) : 1)79; 2) 90
Sample size: bar