EXPLORE
DEFINE
DESIGN
CREATE
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ADT Cr-mo
The predecessors to today’s Cr-mo frames were first produced in the 50’s. Technology has not changed much since then, and the ride of a Cr-mo frame is still the standard by which all other bicycle frames are judged. Cr-mo can be described in general terms as lively, solid, and predictable. Cr-mo’s durability and tunability make it a favourite of many cyclists. The Cr-mo tubing used in our ADT bicycle frames is 4130. This material has good formability, and is used to create durable tube-sets which provide the ride that Cr-mo is known for.
Tubeset Name ADT 4130 Cr-Mo Steel DESCRIPTION Is a family of high-strength low-alloy steels (HSLA), as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often referred to as chromoly steel, or cro-mo, or CRMO. They have an excellent strength to weight ratio, are easily welded and are considerably stronger and harder than standard 1020 steel. While these grades of steel do contain chromium, it is not in great enough quantities to provide the corrosion resistance found in stainless steel.
Material
condition
Tensile strength (MPa)
Yield strength (MPa)
elongation in” (%)
HARDNESS (ROCKWELL)
4130
Cold drawn normalized
590–760 MPa
480–590 MPa
20–30
B 90–96
Even though technology of the raw tube set has not changed much over the past few years, there is still ample opportunity for the ADT development team to integrate customised solutions for specific rider requirements.
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