The difference between grade 60 and grade 80 steel is yield strength of the steel. Grade 60 steel has a yield strength of 60,000 psi and grade 80 steel has a yield strength of 80,0000 psi. As the illustration indicates a grade 60 steel bar with an area of steel of one square inch can hold a 60,000-pound elephant. Likewise a grade 80 steel bar with the same area of steel can hold an 80,000-pound elephant.

The pregroove wobble is at a higher linear frequency (cycles/cm.) on the 74 minute blanks, causing the recorder to spin the disc slower (74 min: 1.2 m/s vs. 60 min: 1.4 m/s) and thereby record more information in the same linear space. The 80 minute discs are made by decreasing the track pitch (i.e. space between tracks) from the MD standard's 1.6um to 1.5um (micrometers), the minimum allowed by the MD specification; like the 74' blanks, they also run at 1.2 m/s. See similar questions...

There is no difference… if you are using AR500 for all of your targets. The difference emerges when you have a manufacturer who uses a lower grade steel for handgun targets than with rifle targets. While the lower rated steel is less expensive and is sufficient for most handgun calibers, it will pit and damage when impacted with higher velocity caliber projectiles. See similar questions...

Maple syrup must meet exacting standards for purity. High quality Grade A syrup can be made only by the evaporation of pure maple sap, and by weight may contain no less than 66 percent sugar (Brix). Grade A maple syrup is classified according to its color. The darker the syrup, the stronger the maple taste. See similar questions...

There are basically two ways, short of drastically reducing population itself: energy rationing or energy taxes. Rationing means a political allocation, with governments and bureaucrats deciding who may use energy and who may not. Energy taxes are almost as unpalatable; just try to picture $5-per-gallon gasoline. See similar questions...

Eligibility for age badges has altered and members can now, upon attaining the appropriate age and subject to confirmation of records held, purchase them from the gear shop through the Ulysses Club Inc Administration Office in Narellan D.C by phoning 1300 134 123 or emailing administration@ulysses.org.au These badges subject to confirmation of records held, can be purchased from the Ulysses Club Inc administration office in Bargo by phoning 1300 134 123 or emailing administration@ulysses.org. See similar questions...

Answer: Yes. All Magnum Steel Guitars are state-of-the-art, Professional-Grade pedal steel guitars that will give you many years of playing pleasure. See similar questions...

Yes. According to the NEC, the floor box must have a corrosion-resistant finish if installed in this manner. See similar questions...

Passivation is the treatment of stainless steel in a nitric acid or citric acid solution to remove iron contamination on the surface. The contamination is from fabrication such as stamping, drilling, machining, welding, cutting, forming or wire brushing. Passivation does not change the appearance of the stainless. If the stainless has been heat treated or welded, the resultant scale or discoloration must be removed by either abrasive methods or by pickling. See similar questions...

Answer - Nothing. Generally Trinidadians call them “Pans” while many Americans call them “Drums.” Answer - Very rarely. All custom work is decided on a case by case basis. It doesn’t hurt to ask though! See similar questions...

Information on steel grade equivalency or steel grades manufactured in South Africa is available directly from the individual SAISI members. Company contact details on the SAISI members are available on the SAISI website homepage in the "Members" section. Information on properties of steel sections for the purpose of design and detailing of structural steelwork is available from the Southern African Institute of Steel Construction. See similar questions...

Grade of stainless steel used for capsules and liquid contact parts is ASI 316L. ASI 316 is accepted by FDA for use in Pharma industry. FDA approved materials were used during manufacture of product contact materials (Polyacetal, Teflon, Polyethylene, Anodised aluminium...). A complete list of materials of construction will be attached in the validation documentation. Certificates will be provided after purchase. See similar questions...

In my mind, essay grades start at 50 for a turned-in on-time assignment and earn points as I read. For course investment, however, everyone starts at 100 and loses points (down to zero, if necessary) for missed classes and inadequate participation, or other elements of course investment. See similar questions...

Both of these models have a steel wagon bed with wood sides that are bolted in but may be removed with a screwdriver and a wrench. Model #22: This is a 34" steel wagon with wood sides that has 8 ?" pneumatic wheels and a weight capacity of 120 lbs. Model #32: This wagon is similar to the #22. See similar questions...

The “gauging” game has been played far too long in the pole building industry. The true measure of the thickness of steel is to measure it with a micrometer after the paint has been removed: Somehow, over 20 years ago, a steel roll forming company found a gauging “system” which it felt justified calling steel sheeting measuring between .0142” and .0172” as 26 gauge. Fortunately, most legitimate manufacturers are honest about the products they manufacture. No. See similar questions...

The obvious differences are that 59 has an extra weekly hour and the 59 students scored lower on the ELM. Less obvious is that there is a lot of support structure for these students. Here is a word from Tony Johnson, ILP Program Director: Welcome back for a new and challenging semester. Once again we would like to ask you for your cooperation and assistance in completing progress reports for your ILP students who may need some extra attention. See similar questions...

The 74 minute blanks spin slower and therefore record more information in the same linear space. There is also information encoded in the read-only Table of Contents (TOC) near the inner circumference of the disc telling the player how long the disc is. See similar questions...

Proposition 60 allows transfers of base year values within the same county (intracounty). Proposition 90 allows transfers from one county to another county in California (intercounty) and it is the discretion of each county to authorize such transfers. As of January 2007, only seven counties have passed an ordinance authorizing intercounty transfers; however, it is recommended that you call your assessor for verification as it could change at any time. See similar questions...