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