35CrMoA: It is an alloy structural steel.
35CrMoA characteristics: high static strength, impact toughness and high fatigue limit, hardenability is higher than 40Cr, high creep strength at high temperatures and enduring strength, long-term working temperature up to 500 ℃; cold deformation of the plasticity of the medium, poor weldability.
Use: Now the normal pressure manhole used in equal length double studs or full threaded studs generally use this material.
Extended Information:
Alloy structural steel is the most common type of structural steel in the world. p>Properties of alloy structural steel is introduced:
1, 20Mn2 characteristics:?
With medium strength, smaller cross-section size of 20Mn2 and 20Cr performance is similar to the low-temperature impact toughness, weldability is better than 20Cr, cold deformation of high plasticity, good cutting and machining, the body permeability than the corresponding carbon steel to be higher, heat treatment, overheating, decarburization sensitivity and tempering brittleness tendency.
2, 40Mn2 characteristics:
Medium carbon tempered manganese steel, its strength, plasticity and abrasion resistance are better than 40 steel, and has a good heat treatment process and cutting and machining, poor weldability, when the carbon content in the lower limit, need to be preheated to 100-425 ℃ in order to weld, the existence of tempering brittleness, overheating sensitivity, easy to produce cracks in water quenching, usually in the tempered state use.
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3, 42SiMn characteristics:
Performance and 35SiMn similar to its strength, wear resistance and pining permeability are slightly higher than 35SiMn, under certain conditions, the strength of this steel, wear resistance and hot workability is better than 40Cr, but also instead of 40CrNi use.
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