Materialsheet SS 5716-20 (-20 = extruded quality) Aluminium bronze
(Comp. norms: DIN 1705 CuAl10Ni5Fe4 (F74), BS 2872/74 CA104, NS 16570-20)
Main elements (nom. values)
- Cu 77-82 %
- Al 8,5-11 %
- Ni 4-6 %
- Fe 2,5 - 5 %
Max. impurities:
- Mn 1,5 %
- Pb 0,05 %
- Zn 0,50 %
- Others 0,3 %
Mechanical properties
Yield stress (Rp N/mm 2 ): 300-480 N/mm2
Tensile strength (Rm N/mm 2 ): 630-790 N/mm2
Elongation in %, A 5 : 12-25 %
Hardness/Brinell: 170-220 HB
Density ~ 7,6
Mating material: Min. surface hardness 400 HB Rec. surface roughness < 1 Ra.
Other information
5716-20 is well suited for welding (not soldering) and glueing. It is also an alloy with high cavitation-, erosion- and corrosion-resistance. Insensitive to shockstress, very good abrasion and wear resistance. All mechanical values are a bit better on 5716-20 (than 5716-15).
Examples on areas of use
Marine applications (resistant in saltwater), wormwheels, sliding- and wear-plates, bearings exposed to shock stress, guideparts for hydraulics, valves, sparkless tools etc.
Guidelines for turning, drilling and milling of SS 5716-20
Extruded aluminium bronze (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 |
145-180 |
0,15
0,08 |
| Drilling Ø 2-60mm |
High speed
Boring tool |
|
|
|
30 |
0,08-0,40 |
| Milling Ø 63 mm 6 cuts |
Hard metal
Qual. H20 |
16
4 |
4
1 |
|
Rpm
700 |
mm/min
525
350 |
| Milling Ø 100 mm 8 cuts |
Hard metal
Qual. H20 |
16
4 |
4
1 |
|
500 |
500
325 |
| Milling Ø 160 mm 12 cuts |
Hard metal
Qual. H20 |
16
4 |
4
1 |
|
350 |
500
325 |
| Milling Ø 200 mm 14 cuts |
Hard metal
Qual. H20 |
16
4 |
4
1 |
|
250 |
450
300 |