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.
In Los Angeles (LA) classification for esophagitis, Grade A is considered less severe than Grade C. Grade A esophagitis involves one or more mucosal breaks that are less than 5 mm in length, while Grade C involves larger mucosal breaks that are more than 5 mm and may be more extensive, leading to greater symptoms and complications. Therefore, Grade C esophagitis is generally regarded as worse than Grade A.
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.
Coal has a smooth, hard texture with a shiny appearance. It is typically brittle and crumbly, though sometimes it can exhibit more compact, solid forms depending on its grade and level of compression.
The old recording were marked by brittle, scratching sounds.
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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).
brittle
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.