This metal hardness chart organizes different types of metal using the Mohs hardness scale, a metric used by scientists to determine the scratch resistance of different minerals. With diamond at the top of the scale at a score of 10, elements and alloys can fall along the metal hardness scale from 10 (the most scratch-resistant) to 1 (the softest). We’ve arranged common metals in order of hardness in our handy chart and in this list. Our list includes different kinds of metal from metallic elements like silver to common alloys like steel.

We design our metal RV covers to protect your investment. Metal RV covers may be enclosed for a fully protected garage or open as with a carport. Metal RV covers may be customized with storage areas, skylights, windows and rollup doors,overhead doors and man doors. Our metal RV covers come in any width up to 80' wide clearspan and as long or as tall as you want. From your ATV to your King size RV, motor home, trailer or boat, we've got you covered! Snow, ice, rain, wind, sunshine and other external threats will no longer be a problem with our metal RV covers. Please see our estimator page for pricing and colors.
Many states & cities require building certification. We can install this Boxed Eave Style Metal RV Cover With Horizontal Roof on your level ground or existing concrete slab. Certified up to 140 MPH Wind Speed & 35 PSF Snow Load with the Standard 14 Gauge Steel Frame. We offer up to 65 PSF Snow Load Certification in any state we service for an additional charge if needed. Comes with a 90 Day Workmanship Warranty on Installation.
“Timing was an extremely important factor for us and we knew no one in America could get a steel building on site quicker than Armstrong Steel - so the choice was easy. With all of the unscrupulous steel building companies out there today, we're glad we chose Armstrong Steel because we got what we paid for and THEN some AND they came through in a pinch!”
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