indian multi-fuel klr

[Jeffrey]

http://www.boltdepot.com/fastener-information/materials-and-grades/bolt-grade-chart.aspx evidently grade 8 (strong) would be standard and 10.9 and 12.9 would be (strong) metric--but you usually get 8.8 unless you know where to find or look. J

[George Bynum]

You need to watch the confusion between use of SAE (Grade #) and the metric strength class designations. For a pretty complete list of the US, see http://www.americanfastener.com/technical/grade_markings_steel.asp Our (I'm USA) do not directly relate to strength by any calculation; the 3 on your link are the most common, Grade 2, Grade 5, and Grade 8. All (general statements are false) US carbon steel socket head capscrews exceed Grade 8 specifications. Metric strength class gives the tensile strength in MPa (MegaPascal) for the 1st number (8.x would be 800 MPa for example) 800 MPa is about 116,000 psi, roughly comparable to the SAE 5. Class 10 are (obviously?) "1000" MPa, about 145,000 psi, roughly comparable to SAE grade 8. Class 12 are "1200" MPa, about 174,000 psi, roughly comparable to the un- numbered socket head capscrews here. I'm unaware of any NORMAL hex head fasteners in either metric or US made to the 12.x class strength. We, US, don't include the yield strength in our head marking like the metric class designation does. A 12.9 will have a yield strength of 90% of its tensile strength. Don't assume that is better than 80%. What it means is that the increase in load applied between the material yielding and failing is much less. We don't want to exceed yield strength as the "thing" won't recover to original dimensions. The 90% suggests that we get little warning between yield and fracture. The 80% allows much more. It is very conservative, but the ASME codes I used to use in a prior job specify that design loads cannot exceed the higher of 2/3 yield or 1/3 tensile. When working with SHCS in non- regulated situations, I regularly use 1/2 tensile. Note in both your link and my link that stainless is discussed. In the mostly non-magnetic grades (303, 304, 316 are common), they are significantly weaker than even Class 8.8 or Grade 5. There are other stainless alloys, (410, 416, and 17-4PH are common), which are magnetic and higher strength. AFAIK, Class 12.9 cannot be reached with stainless stuff we can buy off the shelf.

> FYI Bolt Grade Markings and Strength Chart > Posted by: "Jeffrey" > Date: Mon May 9, 2011 1:35 pm ((PDT)) > > http://www.boltdepot.com/fastener-information/materials-and-grades/bolt-gr > ade-chart.aspx > > evidently grade 8 (strong) would be standard > > and 10.9 and 12.9 would be (strong) metric--but you usually get 8.8 unless > you know where to find or look. > > J

George

[Lourd Baltimore]

No, not _that_ Indian, but Altius Automotive Technologies looks like they will building some diesel motorcycles based on the KLR. Looks like they've teamed up with HDT for the engine much like the bikes produced for the US military. http://www.thehindu.com/life-and-style/metroplus/article2006622.ece Josh . [Non-text portions of this message have been removed]