MCR - Micro Carbon Residue Assessment

Micro Carbon Residue (MCR) classification for residual fuels per ISO 8217 RMG/RMK - predicts carbonaceous deposit tendency in cylinders and piston crowns.

MCRCCAIHFO

MCR content% m/mAsphaltenes% m/m

MCR within 18 %: Yes

Asph / MCR ratio: 0.43 -

Verdict: Within typical RMG/RMK range

Changing the inputs requires JavaScript. The calculator above shows its default inputs and result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

MCR \leq 18\%, \quad \text{Asph}/MCR \leq 0.5

Symbol	Meaning	Unit
$MCR$	Micro Carbon Residue	% m/m
$Asphaltenes$	n-heptane-insoluble fraction	% m/m

Source: ISO 8217:2017 RMG380

In short

Micro Carbon Residue (MCR) classification for residual fuels per ISO 8217 RMG/RMK - predicts carbonaceous deposit tendency in cylinders and piston crowns.

Learn the theory Bunker Quality and ISO 8217 Marine Fuel Standards