BR340/490HE has high strength, good
elongation, food formability and flangeability, which can meet the forming
requirement of auto parts with complex shapes, such as lower arm, etc. It can
also be applied to other parts that need flanging. The flangeability is
expressed by the hole expansion ratio. Hole expansion ratio is one of criteria
to the formability of steels. It reflects the material’s resistance to local
cracking because of large local stretch in the direction perpendicular to the
hole during hole expansion.
BR340/490HE steel Chemical composition %
|
Grade
|
C
|
Si
|
Mn
|
Nb + Ti
|
|
BR340/490HE
|
＜0.10
|
＜1.50
|
0.5~2.0
|
0~0.10
|
BR340/490HE steel has many advantages such
as good formability, high strength, low yield ratio, high initial work
hardening rate, good balance of strength and ductility, etc. It is a solution
to the problem that the high- strength low-alloy steel is not easy to punch.
Dual-phase steel is suitable for manufacturing parts of complex shapes, such as
car wheel discs and other components.
Email : pandora@steel-jw.com
Skype : pandora.peng
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