BASIC INFO
Rail shoulder is a pre-inserted item in the concrete sleepers, no matter for single stem type or twin stem type, used to fix the elastic rail clips, mainly e-clips, within the fastening system.
Cast in Shoulder is made by casting from iron, and such shoulder is used by being pre-embedded in the concrete sleepers and works with the elastic clip to fasten the rail.
For materials, cast in shoulder includes 3 types: M.C.I. shoulder by malleable iron and S.G.C.I. shoulder by malleable iron and S.G.C.I. shoulder by spheroid graphite iron.
Main Material Technical Parameter of Cast in Rail Shoulders
|
Material |
Tensile Strength(Mpa) |
Yield Strength(Mpa) |
Elongation(%) |
|
QT400-15(GGG40) |
400 | 250 | 15 |
|
QT450-10(GGG45) |
450 | 310 | 10 |
|
QT500-7 (GGG50) |
500 | 320 | 7 |
Material Chemical Composition〔%〕of Cast in Rail Shoulders
|
Material |
C | Si | Mn | P | S |
|
Qt450-10 |
0.6-3.6 |
3.0-3.2 |
0.5 | 0.07 | 0.02 |
| QT400-15 |
3.4-3.9 |
3.7-3.0 |
0.5 | 0.07 | 0.03 |
|
QT500-7 |
3.4-3.8 |
2.5-2.9 |
0.5 | 0.08 |
0.025 |
Standard: GB/T 1348-1988, NF EN 1563(1997), ISO1038, DIN 1693, JIS G5502 (2001), KS D 4302, GOST 7293(1985) or BS EN 1563(1997).
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