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SPIRIT
The alloy selected by Columbus
NIOBIUM is a special steel with manganese, chrome, nickel, molybdenum and niobium. Columbus's special chemical composition, the combined effect of
strengthening for precipitation and reducing the alloy grain size are incredibly enhanced compared to standard steels. Niobium proves more effective than
Vanadium as an alloy-strengthening agent. After specific processes of progressive drawing and forming, NIOBIUM undergoes a special heat treatment that gives the
steel its final characteristics. It is a steel designed to provide superior mechanical characteristics and higher resistance to environmental effects than conventional
carbon steels. The only serious choice for a competition or top-of-the-line frame, where lightweight and reliability are essential.
Mechanical characteristics: Rm =1050 1250 MPa, Rp0.2 =750 MPa, Ap5 >14%. Material suggested for TIG welding: OK TIGROD 13.12 (AWS 5.28 ER 30S-G).MIG:
OK AUTROD 13.12 (AWS 5.28 ER 30S-G)
The characteristics of the Spirit tubes
Small thickness, down to 0.38 mm. Exceptional mechanical characteristics: high breaking load, superior tenacity and incredible fatigue endurance. Special shaping
designed to optimise strength and resistance. Excellent surface finish of tubes (no decarburization or oxidation). Individual inspection and marking of the tubes of the
main triangle. Main triangle in NIOBIUM and rear stays in alloyed steel without welding. Incomparable strength/weight ratio
Reasons to choose Spirit
Athlete :Spirit makes it possible to build a frame with an excellent resistance/weight ratio with durability beyond compare. The only serious choice for
a top-of-the-line frame where lightweight and comfort are indispensable elements.
Framebuilder :Spirit is a triple-butted tube set that makes it possible to make lightweight, reliable competition frames. The ease of processing and welding it
make it the only serious choice for extremely high quality frames. |
