All posts by Book Of Engineering
EE23: SIZE OF EARTHING CONDUCTOR
EE22: SELECTION OF EARTHING SYSTEM
EE21: GALVANIZED IRON (GI) EARTH STRIP SIZE FOR VARIOUS APPLICATIONS
ME07: EN AISI/ASTM DESIGNATION CONVERSION TABLE OF MATERIALS GRADES
CHEM01: UV INDEX CHART
ME06: GALVANIC CORROSION TABLE (GALVANIC VOLTAGES RELATIVE TO GOLD)
METAL | INDEX [V] |
Most cathodic (most noble) | |
Gold, solid and plated; gold-platinum alloy | -0.00 |
Rhodium-plated on silver-plated copper | -0.05 |
Silver, solid or plated; monel metal; high nickel-copper alloys | -0.15 |
Nickel, solid or plated; titanium and its alloys; monel | -0.30 |
Copper, solid or plated; low brasses or bronzes; silver solder; German silvery high copper-nickel alloys; nickel-chromium alloys | -0.35 |
Brass and bronzes | -0.40 |
High brasses and bronzes | -0.45 |
18%-chromium-type corrosion-resistant steels | -0.5 |
Chromium plated; tin plated; 12%-chromium-type corrosion-resistant steels | -0.6 |
Tin-plate; tin-lead solder | -0.65 |
Lead, solid or plated; high lead alloys | -0.7 |
2000 series wrought aluminium | -0.75 |
Iron, wrought, gray, or malleable; low alloy and plain carbon steels | -0.85 |
Aluminium, wrought alloys other than 2000 series aluminium, cast alloys of the silicon type | -0.9 |
Aluminium, cast alloys (other than silicon type); cadmium, plated and chromate | -0.95 |
Hot-dip-zinc plate; galvanized steel | -1.2 |
Zinc, wrought; zinc-base die-casting alloys; zinc plated | -1.25 |
Magnesium and magnesium-base alloys; cast or wrought | -1.75 |
Beryllium | -1.85 |
Most anodic (least noble) |
For high humidity and salty (harsh) environments, outdoors there should be no more than 0.15V difference in the anodic index of the two metals. This is 0.25 for normal conditions like warehouses and 0.5 for air controlled rooms.
The main logic is the closer two metal to each other in the table, they will be more suitable to use together.
What is Additive Manufacturing (or Additive Layer Manufacturing)?
TEA TIME WITH FUCHSIA SDK: ANDROID WILL BE OUT OF DATE SOON. FUCHSIA IS COMING
This blog post explores the contrast between the widely recognized Android and the relatively obscure Fuchsia OS. While Android has been the mobile OS leader, Fuchsia, developed by Google, could potentially replace it. Fuchsia offers unique features like easy upgradability, compatibility with Android apps, and a distinct Zircon kernel. The blog also touches on its development history and prerequisites for those interested in developing for Fuchsia OS, such as familiarity with languages like C/C++, Dart, FIDL, Go, Python, and Rust, as well as the use of Flutter and other components.