Exploring the Composition and Properties of 13CrMo4-4 Steel Grade

[ad_1] The 13CrMo4-4 steel grade is a low-alloy steel with a specified minimum yield strength of 340 MPa. It is commonly used in power generation industries, including steam boilers and high-temperature piping systems.

The chemical composition of 13CrMo4-4 steel typically includes:
– Carbon (C): 0.08-0.18%
– Silicon (Si): 0.10-0.35%
– Manganese (Mn): 0.40-1.00%
– Phosphorus (P): 0.025% max
– Sulfur (S): 0.015% max
– Chromium (Cr): 0.70-1.15%
– Molybdenum (Mo): 0.40-0.60%

These alloying elements contribute to the steel’s mechanical properties and its ability to withstand high-temperature environments.

In terms of mechanical properties, 13CrMo4-4 steel exhibits the following characteristics:
– Tensile strength: 470-630 MPa
– Yield strength: min 340 MPa
– Elongation: 22% min (longitudinal), 20% min (transverse)
– Impact strength: 31 J min at -20°C

Additionally, 13CrMo4-4 steel has good weldability and can be easily formed and machined. It provides excellent resistance to high-temperature creep and oxidation, making it suitable for a wide range of applications in the power and energy sectors.

Overall, the composition and properties of 13CrMo4-4 steel make it a reliable and durable material for various high-temperature applications.