C5102

C5111

C5191

C5210

C51100

chemical composition（%）

Copper: allowance

Copper: allowance

Copper: allowance

Copper: allowance

Copper: allowance

tin：4.5~5.5

tin：3.5~4.5

tin：5.5~7.0

tin：7.0~9.0

tin：3.5~4.8

phosphorus：0.03~0.35

phosphorus：0.03~0.35

phosphorus：0.03~0.35

phosphorus：0.03~0.35

phosphorus：0.03~0.35

proportion（gm/cm³）

8.86

8.86

8.83

8.8

8.86

CTE(10~6/℃)

17.8

17.8

18

18.2

17.8

coefficient of heat conduction（Cal/c㎡/cm/sec/℃）

0.17

0.2

0.16

0.15

0.2

conductivity（%ACS,20℃）

≥20

≥ 20

≥ 13

≥12

≥ 20

tensile strength（N/m㎡）

soften

≥305

≥295

≥315

≥280

1/4H

375~470

345~440

390~510

340~445

1/2H

470~570

410~510

490~610

470~610

400~500

3/4H

H

570~665

490~590

590~685

590~705

480~580

EH

≥620

≥570

≥635

685~785

≥560

SH

735~835

ESH

elongation（%）

soften

≥40

≥38

≥42

≥38

1/4H

≥28

≥25

≥35

≥26

1/2H

≥15

≥12

≥20

≥27

≥13

3/4H

H

≥7

≥7

≥8

≥20

≥8

EH

≥4

≥3

≥5

≥11

≥4

SH

ESH

hardness（HV）

soften

90~110

1/4H

90~130

100~130

110~140

100~135

1/2H

130~170

130~150

140~180

170~190

125~160

3/4H

H

170~190

150~170

180~210

190~200

150~180

EH

≥190

≥170

≥200

210~230

≥170

SH

230~250

ESH

softening temperature（℃）

elasticity coefficient

107

109

109

109

108

The high quality phosphor bronze of Yirong Hardware Factory has good electrical conductivity, is not easy to heat, and has strong fatigue resistance;

Phosphor bronze is often used in hard-wired electrical structure of jack reeds, without rivet connection or frictional contact, which can ensure good contact, good elasticity and smooth dialing and inserting;

Widely used in electronic and electrical machines with springs, lead frame, mobile phones, terminal connectors, switching components.