Number

D
mm

L
mm

Be-Cu
g

Al-Cu
g

173-02
173-04
173-06
173-08
173-10
173-12
173-14
173-16
173-18
173-20
173-22
173-24

30-32
34-36
40-42
45-50
52-55
58-62
68-75
80-90
95-100
110-115
120-130
135-145

140
170
176
209
212
144
250
284
288
337
343
388

63
95
105
160
170
225
265
375
415
770
770
1110
 

50
85
95
145
150
200
240
335
370
690
690
1000

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