Diamond frames
Columbus Cromor is a 25CrMo4 steel, seamed and cold drawn, butted to variable thicknesses using shaped mandrills. Cromor steel is produced starting from a calibrated tube which has already received two drawing processes, before being reinforced in all the possible variable thickness off ered by the range.
Mechanical characteristics:
UTS=750MPa, Ys=700MPa, Ap5 ≥ 12%
All-Purpose Hi-Resistance tubes family, Thron offer excellent technical characteristics, higher rigidity and good lightness.
The chemical composition of this steel, specifying a higher percentage of Chromium, gives the material good resistance properties to overheating. The formation of carbides prevents the grain enlargement, Thron tubes maintains its properties during brazing and welding and even in the malleable raw state it features excellent mechanical characteristics. High versatility, easy to match with other alloys, easy to manipulate.
Mechanical characteristics:
UTS=800MPa, Ys=760MPa, Ap5 ≥ 12%