Physical Properties
Expert reports

Physical
properties ...

... of lead-free alloys

Expert reports
 

1) 1 MPa = 10 bar = 1 N/mm2

2) When a yield point is not easily defined based on the shape of the stress-strain curve an offset yield point is arbitrarily defined. The value for this is commonly set at 0.2%.

3) Tensile Test complies with JIS Z 3198-2 (Tensile test method for Pb-free solder) Tension Speed 10mm/min

4) The coefficient n is a measure of the amount by which a material hardens with increasing deformation strain φg and is therefore known as the strain hardening coefficient.

 
Expert reports
 
Expert reports
 

1) Measure the time until soldered part (Cu wire on single-sided board and hang 1kg weight on Cu wire under 130°C air) dropped off.