The "metric grade" your asking about conforms to North American metric standards. The 12.9 should have a ultimate tensile strength of 1200 MPa and tensile yield strength of 1080 MPa. The 10.9 should be weaker have a ultimate tensile strength of 1000 MPa and tensile yield strength of 900 MPa. You are asking "can" it be more brittle. It should not be but it can be if a problem with manufacturer quality control.
A mid grade paint, anything $50-60. anything cheaper wont be that good, anything more brittle with be chopped.
more brittle
To be brittle is to be hard and breakable. An example sentence would be: The older she got, the more brittle her bones seemed to be.
a brittle is something that breaks easily with out more opposition like bones for instance..
It will be lowered with the result that the steel becomes more brittle.
The old recording were marked by brittle, scratching sounds.
m
It can be more or less. An once (customary) is bigger than a gram (metric) but a pound (customary) is smaller than a kilogram (metric).
this site did not help me at all.it did not answer my questions. all it did was confuse me more for my native amerian project wich was 50 precent of my grade. this is the worst site ever.
No
To create a more ballanced and accurate metric system.
The liter (or more properly litre) is a metric unit of volume.