BR540/690HE steel,BR540/690HE steel mechanical properties,BR540/690HE steel supplier

BR540/690HE 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.

BR540/690HE steel mechanical properties

Grade	Thickness (mm)	Tensile strength (MPa)	Yield strength (MPa)	Elongation A50  (%)	Hole expansion rate (%)
BR540/690HE	1.6~6.0	≥690	≥540	≥14	≥70

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