United States · ASTM

B971 Class H

ASTM B971:2010 — Standard Specification for Silver-Coated Braid and Ribbon Flat Copper Wire intended for use in Electronic Application

Mechanical properties

value range by condition
Tensile strength Rm≥379 MPaElongation A≥15 %Wires, cold drawn, 0.1 < d < 0.226 mmTensile strength Rm≥379 MPaElongation A≥20 %Wires, cold drawn, 0.254 < d < 0.51 mmTensile strength Rm≥379 MPaElongation A≥25 %Wires, cold drawn, 0.574 < d < 1.628 mm

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
Wires, cold drawn, 0.1 < d < 0.226 mm≥379≥15 Lo = 250 mm
Wires, cold drawn, 0.254 < d < 0.51 mm≥379≥20 Lo = 250 mm
Wires, cold drawn, 0.574 < d < 1.628 mm≥379≥25 Lo = 250 mm