40crmnmo** form: plate, rod, tube, steel strip, wire, forging, forging pipe, forging plate, forging rod, round bar, plate, sheet, seamless pipe, welded pipe, round bar, wire, steel plate, disc round, strip.
40CrMnMo is a commonly used structural steel with excellent mechanical properties and wear resistance.
1.40crmnmo's main parameter data.
The chemical composition of 40CrMnMo includes: Carbon (C) content of 037-0.44%, manganese (Mn) content is 060-0.90% with a chromium (CR) content of 060-1.00%, molybdenum (mo) content is 015-0.25% with a sulfur (s) content of 0035% with a phosphorus (p) content of 0035%。The alloy steel has a hardness range of 170-210HB, a tensile strength of 700MPa, a yield strength of 450MPa, an elongation of 20%, and an impact toughness of 39Jcm.
2.Performance characteristics of 40crmnmo.
40CrMNMMO has the characteristics of high hardness, high strength, high wear resistance and heat resistance. Its hardness and strength are better than ordinary carbon structural steel, wear resistance is better than steel and non-alloy steel, and it can still maintain good mechanical properties in high temperature environments.
3.Application areas of 40crmnmo.
40crmnmo is commonly used in the manufacture of high-load, high-strength and high-wear parts, such as bearings, gears, crankshafts and pistons of construction machineryThe mold core and mold base of the mold, etc.;Transmission shafts, transmission gears and clutches for automotive parts. In addition, due to the high temperature resistance of 40CrMNMO, it can also be used to manufacture heavy machinery and equipment in the fields of petroleum, chemical industry and shipbuilding.
4.40crmnmo process.
40CrmnMo needs to be tempered during the heat treatment process to reduce internal stress and improve toughness. Commonly used process methods are normalizing and quenching. Normalizing can make the steel obtain high toughness, and quenching can improve its hardness and strength.
5.Precautions for 40crmnmo.
When using 40crmnmo, you need to pay attention to the following:
Appropriate cutting parameters should be used during cutting to avoid excessive heat generated during machining, resulting in the degradation of the performance of alloy steel.
During the heat treatment process, the heating temperature and holding time are controlled to ensure that the desired tissue and performance requirements are met.
Avoid overloading when using 40crmnmo parts to avoid plastic deformation and breakage.
To sum up, 40CrMnMo is a structural steel with excellent performance, which has the characteristics of high hardness, high strength, high wear resistance and heat resistance. It has a wide range of applications in the fields of construction machinery, molds and auto parts, and it is necessary to pay attention to the corresponding matters in the process of use and handling to ensure its normal operation and prolong its service life.