55SiMnVB,Overview
,,,,,,,,,Material,Name:,55SiMnVB,spring,steel


55SiMnVB,delivery,state
Delivery,status:,delivery,of,hot-rolled,steel,to,heat,treatment,or,heat,treatment,condition,,cold,drawn,steel,to,heat,treatment,delivery.
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55SiMnVB,characteristics,and,uses

55SiMnVB,spring,steel,alloying,element,content,,hardenability,is,high,,toughness,,higher,ductility,,decarburization,tendency,and,good,temper,resistance,,thermal,processing,performance,and,low,cost.,Production,of,heavy,,medium,and,small,cars,leaf,springs,and,other,medium-sized,section,of,the,leaf,spring,and,coil,spring.


55SiMnVB,other,properties
55SiMnVB,spring,steel,mechanical,properties:

Tensile,strength,σb,(MPa):,≥,1372,(140)

Yield,strength,σs,(MPa):,≥,1225,(125)

Elongation,δ10,(%):,≥,5

Section,shrinkage,ψ,(%):,≥,30

Hardness:,hot,,≤,321HB,,Cold,Drawn,,,heat,treatment,,≤,321HB

55SiMnVB,spring,steel,heat,treatment,and,microstructure,specifications:

Specification,of,heat,treatment:,quenching,860,°,C,±,20,°,C,,cold,oil,,tempering,460,°,C,±,50,°,C,(special,needs,,±,30,°,C).

Microstructure:,tempering,sorbitic