Materialsheet SS 5204-15 Gunmetal
(Comp. norms: DIN 1705 Rg 5, BS 1400 LG2, NS 16530)
Main elements (nom. values)
- Cu 84-86 %
- Sn 4-6 %
- Pb 4-6 %
- Zn 4-6 %
Max. impurities:
- Ni 2,0 % (can be part of the Cu-cont.)
- Mn 0,2 %
- P 0,05 %
- Fe 0,3 %
- Sb 0,3 %
- S 0,1 %
Mechanical properties
Yield stress (Rp N/mm 2 ): 90-125 N/mm 2
Tensile strength (Rm N/mm 2) ): 245-290 N/mm 2
Elongation in % A 5 : 13-23 %
Hardness/Brinell: 65-80 HB
Density ~ 8,8
Mating material: Min. surface hardness 165 HB Rec. surface roughness < 1 Ra.
Other information
5204 is not suited for welding (due to its lead-content). The material is however possible to use for soldering (both soft- and machine-soldering) and glueing.
Examples on areas of use
LM & LMF standardbearings acc. to swedish standard, all sorts of bearings for general purposes and medium to low loads, Pumphouses, Water- and steam-fittings < 225 ºC, e.g. flangehubs etc.
Guidelines for turning, drilling and milling of SS 5204-15 Gunmetal
(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
550 |