Physical & Other Properties

Temper
Standard
Electrical
Conductivity
% IACS
minimum
Thermal
Conductivity
BTU/(ft*hr*°F)

Formability
(max R/t for
90° bend)
Good Way

Typical

Formability
(max R/t for
90° bend)
Bad Way

Typical

Stress
Relaxation
Resistance
1000 hr @
212°F (100°C)
Stress
Relaxation
Resistance
1000 hr @
392°F (200°C)
Density
@ 68°F
lb/cu.in.
Modulus of
Elasticity
x10(6) psi
NGK 165 (UNS C17000);   1.75 wt% Be,   0.25 wt% Co,   Balance Cu
A
1/4H
1/2H
H
-
-
-
-
60
60
60
60
0
0
0
1.5
0
0
1
3
-
-
-
-
-
-
-
-
0.304
0.304
0.304
0.304
18.5
18.5
18.5
18.5
AT
1/4HT
1/2HT
HT
22
22
22
22
60
60
60
60
-
-
-
-
-
-
-
-
96
97
97
98
70
71
72
75
0.304
0.304
0.304
0.304
18.5
18.5
18.5
18.5
AM
1/4HM
1/2HM
HM
SHM
XHM
16
16
16
17
18
19
60
60
60
60
60
60
0
0.5
1
2
3
4
0
0.5
1
3
5
7
97
97
98
98
98
98
66
67
67
68
68
69
0.304
0.304
0.304
0.304
18.5
18.5
18.5
18.5

NGK 25 (UNS C17200);   1.85 wt% Be,   0.25 wt% Co,   Balance Cu
A
1/4H
1/2H
H
-
-
-
-
60
60
60
60
0
0
0.5
1
0
0
1
3
-
-
-
-
-
-
-
-
0.298
0.298
0.298
0.298
18.5
18.5
18.5
18.5
AT
1/4HT
1/2HT
HT
22
22
22
22
60
60
60
60
-
-
-
-
-
-
-
-
96
96
97
98
70
70
73
74
0.298
0.298
0.298
0.298
18.5
18.5
18.5
18.5
AM
1/4HM
1/2HM
HM
SHM
XHM
XHMS
16
16
16
17
18
19
20
60
60
60
60
60
60
60
0
0
0
1
2
3
4
0
0
0
1
2
4
6
97
97
97
98
98
99
99
76
76
76
77
77
78
78
0.298
0.298
0.298
0.298
0.298
0.298
0.298
18.5
18.5
18.5
18.5
18.5
18.5
18.5

NGK 14 (UNS C17510);   0.50 wt% Be,  1.80 wt% Ni,   Balance Cu
A
H
-
-
120
120
0
0.5
0
0.5
-
-
-
-
0.317
0.317
19.2
19.2
AT
HT
45
48
144
144
1
2
1
2
94
96
72
75
0.317
0.317
19.2
19.2

NGK 17510TMP (UNS C17510);   0.50 wt% Be,   1.80 wt% Ni,   Balance Cu
1/2HM
HM
50
50
144
144
1
2
1
2
94
96
72
75
0.317
0.317
19.2
19.2