Materialsheet SS 5640-15 Lead tinbronze

(Comp. norms: DIN 1705 CuPb10Sn, BS 1400 LB2, NS 16540)

Main elements (nom. values)

• Cu 78-82 %
• Pb 8-11 %
• Sn 9-11 %

Max. impurities:

• Ni 2,0 % (can be part of the Cu-cont.))
• P 0,05 %
• Zn 2,0 %
• S 0,10 %
• Fe 0,25 %
• Mn 0,2 %
• Al 0,01 %
• Si 0,01 %
• Sb 0,5 %

Mechanical properties

Yield stress (Rp N/mm 2 ): 105-140 N/mm2
Tensile strength (Rm N/mm 2) ): 210-245 N/mm2
Elongation in %, A 5 : 8-14 %
Hardness/Brinell: 70-85 HB

Density ~ 8,9

Mating material: Min. surface hardness 200 HB Rec. surface roughness < 1 Ra.

Other information

5640 is not suited for welding or soldering (due to its lead-content). The material is however possible to use for glueing. Is very similar to alloy Rg7 in its mechanical abilities.

Examples on areas of use

Bearings exposed to edge pressure, bearings with high demands on lubrication, marine details (sea water resistant), pumpdetails etc.

Guidelines for turning, drilling and milling of SS 5640-15 Lead tinbronze

(normal working conditions is presumed)