Number

L
inch

L
mm

B
mm

H
mm

Be-Cu
g

TK217-02
TK217-04
TK217-06
TK217-08
TK217-10
TK217-12

6
8
10
12
14
16

150
200
250
300
350
400

16
21
25
30
32
32

4
4.5
6
6.5
8
9.5

75
160
282
455
675
925

Beryllium copper:  GBEx ⅡC

Be: 1.8% - 2.3%

Ni: 0.2% - 0.5%

Others: < 0.5%

Cu: Rest

Hardness: 35-40 HRC (HB283-365)

Tensile Strength: 1117 N/mm2 ~ 1326 N/mm2

Aluminum bronze: GBEx ⅡB

Al: 10% - 12%

Ni: 4% - 6%

Fe+Mn: < 5.8%

Cu: Rest

Hardness: 20-30 HRC (HB229-291)

Tensile Strength: 782 N/mm2 ~ 989 N/mm2