Sell alloy structural steel 38CrMoAl

Description

alloy structural steel *8CrMoAl
standard：GB/T ********8
●features and use scope：
It has high rigidity of appearance , wear resistant and fatigue strength.It also has good heat resistance and causticity ,don't have high hardenability.It used to making high abrasion performance , high fatigue resistance and sizable stength,the azotizing parts of higher order accuracy after dealing .Such as artificial mold ,Cylinder Liner,gear, high pressure valve,cutter spindle,worm,cranksahft journal grinding machine and so on .But it is not used to big size parts.

●Chemical composition：
碳 C ：0.*5～0.*2
硅 Si：0.*0～0.*5
锰 Mn：0.*0～0.*0
ç¡« S ：allow remains content≤0.**5
磷 P ：allow remains content≤0.**5
铬 Cr：1.*5～1.*5
镍 Ni：allow remains content≤0.**0
é“œ Cu：allow remains content≤0.**0
钼 Mo：0.*5～0.*5
●mechanical properties：
tensile strength σb (MPa)：≥**0(**0)
yield strength σs (MPa)：≥**5(*5)
extensibility  δ5 (ï¼…)：≥*4
reduction of area  ψ (ï¼…)：≥*0
ballistic work  Akv (J)：≥*1
notched bar impact strength αkv (J/cm2)：≥*8(9)
igidity  ：≤**9HB
specimen size：specimen size of rough*0mm
●heat treatment regime and metallurgical structure：
heat treatment regime ：quenching **0℃,water cooling、oil cooling ;backfire **0℃,water cooling、oil cooling。
●deliver position ：heat treatment（normalizing、annealing or high-temperature backfire）or no heat treatment，this should be shown on the contract.