</font><font color="blue" class="small">( Grade 8 will take more load but being more brittle ...)</font>
RobS, as far as I know about this standart grade, it isn't more brittle as it's a ductile material. Brittleness is a thing, shear/tension capability is another thing. Brittle materials don't follow plastic deformation much unlike these ductile alloy steels like Grade 8.
Villengineer, the question of this thread is 2 folds;
1. What's the optimum Grade for shear bolt for a specific (unknown) attachment system (including tractor, etc etc)?
2. How to find that optimum grade bolt?
Lets start that way;
Lets name the optimal shear bolt for a specific system is GradeX. This GradeX will usually lie somewhere in between
Grade2 ......... GradeX ..............Grade8.
A farmer might have already found his/her GradeX position with some lucks and he/she is shearing the bolt rarely and without giving any damage to any component in his/her system. I see that most of farmers chose the simplest way which is to use Grade2. But they are also breaking many bolts which also costs them time that makes them angry. I also seen some farmers using Grade5 without any problem.
So, their GradeX specific to their own special systems is to be determined here and this should be done by each of farmer because each of their system is a special (with ages/component qualities/etc.) Okay, Grade2 is always solution, but this determination of GradeX too is worth to talk about, isn't it? I think everybody is agreeing with me in that. Now, the next is how to determine GradeX.
I'll rewrite that;
Grade2 ......... GradeX ..............Grade8.
(GradeX can be Grade2.5 or Grade5.7 or Grade 7.1 and so on)
Trial-error method has always a cost. Going from Grade8 to Grade2 to find GradeX is a risk and going from Grade2 to Grade8 is another risk. Which risk to be taken? Is there another method (other than trial-error) that a farmer can do? All these are to be talked about here. But before answering these, first, we need to agree about that we really have to find our own GradeX for our own attachment system? Answer to this should be fixed to this first. Those farmers who are interested in knowing their own GradeX can tell their idea/experiences.
Ps: Normde2001, I visited your web pages and really liked your art works. Congrats. We share that interest of art hobby. I have a hobby web site dedicated to weaving and wooden art. www.halikilimci.com (the Moderator can delete this link if it's not permitted.)
RobS, as far as I know about this standart grade, it isn't more brittle as it's a ductile material. Brittleness is a thing, shear/tension capability is another thing. Brittle materials don't follow plastic deformation much unlike these ductile alloy steels like Grade 8.
Villengineer, the question of this thread is 2 folds;
1. What's the optimum Grade for shear bolt for a specific (unknown) attachment system (including tractor, etc etc)?
2. How to find that optimum grade bolt?
Lets start that way;
Lets name the optimal shear bolt for a specific system is GradeX. This GradeX will usually lie somewhere in between
Grade2 ......... GradeX ..............Grade8.
A farmer might have already found his/her GradeX position with some lucks and he/she is shearing the bolt rarely and without giving any damage to any component in his/her system. I see that most of farmers chose the simplest way which is to use Grade2. But they are also breaking many bolts which also costs them time that makes them angry. I also seen some farmers using Grade5 without any problem.
So, their GradeX specific to their own special systems is to be determined here and this should be done by each of farmer because each of their system is a special (with ages/component qualities/etc.) Okay, Grade2 is always solution, but this determination of GradeX too is worth to talk about, isn't it? I think everybody is agreeing with me in that. Now, the next is how to determine GradeX.
I'll rewrite that;
Grade2 ......... GradeX ..............Grade8.
(GradeX can be Grade2.5 or Grade5.7 or Grade 7.1 and so on)
Trial-error method has always a cost. Going from Grade8 to Grade2 to find GradeX is a risk and going from Grade2 to Grade8 is another risk. Which risk to be taken? Is there another method (other than trial-error) that a farmer can do? All these are to be talked about here. But before answering these, first, we need to agree about that we really have to find our own GradeX for our own attachment system? Answer to this should be fixed to this first. Those farmers who are interested in knowing their own GradeX can tell their idea/experiences.
Ps: Normde2001, I visited your web pages and really liked your art works. Congrats. We share that interest of art hobby. I have a hobby web site dedicated to weaving and wooden art. www.halikilimci.com (the Moderator can delete this link if it's not permitted.)
