Phosphor bronze Technical Information

Phosphor Bronze

The inclusion of phosphorus (typically up to 0.35%) increases the stiffness and wear resistance of the alloy. It acts as a deoxidant which improves fluidity and therefore the castability of the material. Whilst the alloy is well known for high corrosion resistance and good wear resistance characteristics, the phosphor bronze Round Bar also offers good thermal and electrical conductivity with excellent spring and plating properties.

GRADE

GRADE BSS / ISS

NOMINAL COMPOSITION
[Cu / TIN / Zn / Pb]

TENSILE STRENGTH
Kg/mm2

ELONG
ATION
“% ON 2”

BRINELL HARDNESS

PHOS. BRONZE

BS1400 PB1-C / ---
BS1400 PB2-C / ---
BS1400 PB3-C / ---
BS1400 PB4-C / ISS 28 PBz-10
BS1400 LPB1-C / ---

89 / 10 / 0 / 1
88 / 12
90 / 10
90.5 / 9.5
87 / 8 / 2 / 3

22 – 28
22 – 31
23 – 31
19 – 26
18 – 25

3 – 8
5 – 15
10 – 20
3 – 12
3 – 12

60 – 100
75 – 110
70 – 90
70 – 95
60 – 90

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