Federalloys III - C 893 25
(Leadfree replacement for leaded tinbronze acc. to SS 5640-15, CuPb10Sn, ASTM 3A etc.)
Main elements (nom. values)
- Cu 86,0 %
- Bi 3,2 %
- Sn 10,0 %
Max. impurities:
- Zn 1,0%
- Ni 1,0%
- Al 0,05%
- Sb 0,50%
- Fe 0,15
- P 0,10%
- Si 0,005%
- S 0,08%
- Other max. 1,1 %
Machinability: 80/100 (Free Cutting Brass = 100)
Mechanical properties
Yield strength (Rp N/mm 2 ): 83-124 N/mm 2
Tensile strength (Rm N/m m 2) ): 206-241 N/mm 2
Elongation in % A 5 : 15-20 %
Hardness/Brinell: 73 HB
Density ~ 8,94
Mating material: Min. surface hardness 165 HB
Rec. Surface roughness < 1 Ra.
Other information
This material is Not suited for welding. The materialet is however Good for soldering
and Good for brazing as well as Glueing.
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 Federalloy III C 89325
Leadfree lead-tinbronze-replacement (normal working conditions is presumed)
| Work operations |
|
Surface
roughness |
Nose radius
mm |
Cutting Speed
m/min |
Feeding
mm/revs |
| Hµm |
Raµm |
| Turning |
Hard metal
Qual. H20 |
16
4 |
4
1 |
0,4
0,8 |
285-360 |
0,15
0,08 |
| Drilling Ø 2-60mm |
High speed
Boring tool |
|
|
|
70 |
0,08-0,40 |
| Milling Ø 63 mm 6 cuts |
Hard metal
Qual. H20 |
16
4 |
4
1 |
|
Rpm
1200 |
mm/min
800
550 |
| Milling Ø 100 mm 8 cuts |
Hard metal
Qual. H20 |
16
4 |
4
1 |
|
1000 |
1000
675 |
| Milling Ø 160 mm 12 cuts |
Hard metal
Qual. H20 |
16
4 |
4
1 |
|
650 |
1100
700 |
| Milling Ø 200 mm 14 cuts |
Hard metal
Qual. H20 |
16
4 |
4
1 |
|
500 |
850
450 |
Federalloys© is an equivalent to leaded bronzes, without the lead. Bismuth has been added to replace lead in these alloys for pressure tightness, lubrication and machinability. This eliminates all the environmental concerns associated with lead in machining and fabricating processes. Federalloys is not a substitute but a replacement for leaded bronzes, achieving the same wear, strength, hardness and machinability without the embrittlement found in other Bismuth substitutes. The patented process uses an additive to disperse Bismuth uniformly in copper matrix. Federalloys castings pass standards of Lead (Pb) and Bismuth (Bi) leachate as defined by current NSF Regulations, standard 61, section 8 and 9. Federalloy´s patented alloys are produced by Concast Metal Products Co. under license from The Federal Metals Company of Bedford, Ohio. Sold and distibuted in Scandinavia by Lagermetall AB, Örebro, Sweden.