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Wieland-B14 SUPRALLOY®
CuSn4
C51100
Rolled Products
Material Designation
Chemical Composition (Reference)
Typical Applications
EN
CuSn4
Sn
4%
UNS*
C51100
Cu
balance
· Miniaturized connectors
· Contact springs
· Relais springs
* Unified Numbering System (USA)
Physical Properties*
Electrical
Conductivity
MS/m
%IACS
12
21
Thermal Conductivity W/(m·K)
100
Coefficient
of Electrical
Resistance**
10-3/K
1.3
Coefficient of
Thermal Expansion** 10-6/K
18.0
Density
8.85
g/cm3
Modulus of Elasticity GPa
Specific Heat
J/(g·K)
Poisson’s Ratio
120
0.377
0.34
* Reference values at room temperature
** Between 0 and 300 °C
Fabrication Properties
Corrosion Resistance
Capacity for Being
Cold Worked
excellent
Machinability
less suitable
Resistant to seawater and industrial
atmosphere. Largely insensitive to
stress corrosion cracking.
Capacity for Being
Electroplated
excellent
Capacity for Being
Hot-Dip Tinned
excellent
Soft Soldering
excellent
Resistance
Welding
good
Gas Shielded
Arc Welding
good
Laser Welding
good
B14-SUPRALLOY®
Mechanical Properties
15
R660
R700
MPa
580–680
14
660–760
700–800
Yield Strength Rp0.2
MPa
≥ 530
13
≥ 630
≥ 690
Elongaton A50mm
%
≥ 13
12
≥7
≥3
11
(180–240)
(190–250)
Hardness HV (for information only)
(170–230)
El. Conductivity (MS/m)
15
14
13
12
11
10
9
R580
R660
Temper
0°
B14-SUPRALLOY®
6
10
9
R580
R660
Temper
R700
Bendability (Strip Thickness
t ≤ 0.5 mm)®
B14-SUPRALLOY
Electrical Conductivity B14-SUPRALLOY®
R700
Rel. Bending Radius r/t 90°
Temper
El. Conductivity (MS/m)
R580
Tensile Strength Rm
6
5
4
bending edge –I rolling direction
bending edge II rolling direction
3
2
1
0
R580
R660
Temper
R700
Wieland-B14 SUPRALLOY®
CuSn4
C51100
B14 SUPRALLOY
Fatigue
Strength / Woehler Curve (for information only)
®
The fatigue strength is defined as the
maximum bending stress amplitude
which a material withstands for 107
load cycles under symmetrical alternate load without breaking.
600
500
Bending Stress [MPa]
400
300
200
100
0
Temper R580, II rolling direction
Tension-compression (R = –1)
Sample thickness 0.22 mm
100.000
1.000.000
Cycles to Failure
10.000.000
B14 SUPRALLOY
Thermal Stress Relaxation
Stress remaining after thermal relaxation as a function of Larson-Miller
parameter (F. R. Larson, J. Miller, Trans
ASME74 (1952) 765–775) given by:
P = (20 + log(t))*(T + 273)*0.001.
Time t in hours, temperature T in °C.
Example: P = 9 is equivalent to
1.000 h/118 °C.
Measured on stress relief annealed
specimens parallel to rolling direction.
Total stress relaxation depends on
the applied stress level. Furthermore,
it is increased to some extent by cold
deformation.
100
80
70
60
50
40
Temper
R580, R660, R700
7.0
8.0
9.0
10.0
Larson-Miller parameter P
11.0
Types and Formats Available
· Standard coils with outside
diameters up to 1400 mm
· Traverse-wound coils with drum weights up to 1.5 t
Wieland-Werke AG
Dimensions Available
· Multicoil up to 5 t
· Hot-dip tinned strip
· Contour-milled strip
www.wieland.com
Graf-Arco-Str. 36, 89079 Ulm, Germany, Phone +49 731 944 2030, Fax +49 731 944 4257, [email protected]
This printed matter is not subject to revision. No claims can be derived from it unless there is evidence of intent or gross negligence.
The product characteristics are not guaranteed and do not replace our experts’ advice.
· Strip thickness from 0.10–0.40 mm, thinner gauges on request
· Strip width from 7 mm
10/14 Bm (R+G)
Residual Stress (%)
90