Beryllium Copper Strip

Features of Beryllium Copper

(6) Properties and Tolerances of High Electrical Conductivity Material (Alloy 8 and Alloy 11)

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
8 HT 6) BeCuP08-HTキBeCuR08-HT 700 - 870 4) min. 600 min. 5 210 - 260 min. 60
11 HT 6) BeCuP11-HTキBeCuR11-HT 760 - 965 4) min. 655 min. 5 230 - 280 min. 50
  • 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".
  • 6) "HT" is equivalent to "HM" under JIS (Japanese Industrial Standards)

Tolerances

Thickness tolerance of Alloy 8(mm)

* Standard thickness is only available for Alloy 8.

Specified thicknessTolerance
0.08 ±0.006
0.10 ±0.008
0.12 ±0.008
0.15 ±0.008
0.18 ±0.009
0.20 ±0.009
0.25 ±0.010
0.30 ±0.015

Thickness tolerance of Alloy 11(mm)

Specified thicknessTolerance
OverUp to and including
form 0.08 0.10 ±0.006
0.10 0.15 ±0.008
0.15 0.20 ±0.009
0.20 0.25 ±0.010
0.25 0.40 ±0.015
0.40 0.55 ±0.020
0.55 0.70 ±0.025
0.70 0.90 ±0.030
0.90 Up to 1.20 ±0.040

note) When the tolerance is specified either plus or minus side only, the same range of tolerance shall be applied.
In case of strip cut to length tolerance shall be determined individually.

Length tolerance(mm)

X axis:Speciied length; Y axis: Speciied thickness;Tolerance
FromUp to and includingmax. 1000
0.08 2.0 +10
-0

Width tolerance(mm)

X axis:Speciied width; Y axis: Speciied thickness;Tolerance
Strip cut to lengthStrip in coils
OverUp to and includingmax. 200max. 100Over 100 up toand including 200
from 0.08 0.55 +2
-0
±0.1 ±0.2
0.55 2.0 +2
-0
±0.2 ±0.3

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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