Final piece for the 2024
#China #Vanadium #Steel #Rebar standard.
How CCP prevents cheating, down to the microscopic level.
As we all know, 2018 Rebar standard did not go as well as CCP would’ve liked. People were innovative and coming up with different workarounds to use less Ferroalloys like
#Vanadium,
#Niobium and
#Manganese to produce standard-compliant rebars.
They have included pictures, on how the rebar should look like under microscopic level.
Some of you who have been in the steel game long enough know exactly what these are. Different percentage of pearlite/martensite can be formed depending on how the steel are processed and cooled.
In rebar however, ferrite and pearlite are the preferred core structure, with martensite on the outer layer. Martensite is the hardest and strongest, but very brittle. With uncontrolled cooling technique like water-quenching, microstructure of a rebar will be largely martensite, both in inner core and outer layer.
Preferred form of rebar is to have inner core pearlite ferrite, and martensite on the outer layer.
This is particularly important for earthquake standard rebar. This allows the more flexible core to sway with the force while strong enough for martensite to bring its core back to its original position.
Cracks will form when an earthquake hits if the core’s microstructure is dominated by martensite. If the core starts failing, the whole structure will be unstable.
There have been too many accidents due to structural failures in China that CCP is finally taking a strong stance in enforcing the 2024 standard. We do not expect them to soften their stance at all.
However, the challenge of steelmakers clearing their stock remains - we expect that steel rebar price to remain weak, and will be affecting
#ironore until or close to enforcement date. They will be dumping everything they have into China market, or they could export them out before the date, and discounts will be provided. Makes sense for them to do so to at least recover part of their costs and make tiny loss, rather than recover nothing & making major loss.