Beryllium Copper Strip

Features of Beryllium Copper

(7) Properties and Tolerances of Midrange Material (Alloy 7)

Properties of Strip

AlloyTemperDesignation 5)Tensile test 1)Hardness test 2)Electrical conductivity
3) (%IACS)
Tensile strength
(N/mm2)
Yield strength 0.2%offset (N/mm2)Elongation (%)Vickers hardness HV
7 1/2HT BeCuP07-1/2HTキBeCuR07-1/2HT 670 - 800 4) 550 - 760 min. 10 195 - 250 min. 38
HT BeCuP07-HTキBeCuR07-HT 765 - 900 4) 686 - 834 min. 8 220 - 275 min. 33
EHT BeCuP07-E2HTキBeCuR07-EHT 870 - 1000 4) 750 - 930 min. 4 250 - 310 min. 30
  • 1) Values are applicable to thickness 0.1 mm and over.
  • 2) Values are applicable to thickness 0.1 mm and over.
  • 3) Electrical conductivity is for design guidance only.
  • 4) The upper limits of tensile strength are for design guidance only.
  • 5) P and R in column "Designation" represent "strip cut to length" and "strip in coils".

Tolerances

Thickness tolerance of Alloy 7(mm)

* Standard thickness is only available for Alloy 7

Specified thicknessTolerance
0.08 ±0.006
0.10 ±0.006
0.12 ±0.006
0.15 ±0.008
0.18 ±0.010
0.20 ±0.010
0.25 ±0.010
0.30 ±0.015
0.35 ±0.015
0.40 ±0.015

Length tolerance(mm)

X axis:Speciied length; Y axis: Speciied thickness;Tolerance
FromUp to and includingmax. 1000
0.08 0.4 +10
-0

Width tolerance(mm)

X axis:Speciied width; Y axis: Speciied thickness;Tolerance
Strip cut to lengthStrip in coils
FromUp to and includingmax. 200max. 100Over 100 up to and including 200
0.08 0.40 +2
-0
±0.1 ±0.2

note) When the tolerance is specified either plus or minus side only, the same range of tolerance shall be applied.

Camber tolerance(mm)

Specified WidthMaximum value
OverUp to and includingOver 1000 length
From 4 13 4
13 50 3
50 100 2
100 200 1

Camber tolerance(mm)

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