MIL-E-23765/1E

Abstract

This specification covers ordinary strength steel solid bare and alloyed cored welding electrodes and cut-length rods for use with the gas metal-arc (GMA), gas tungsten-arc (GTA), and submerged-arc welding (SAW) processes. This specification also covers a neutral granular type flux for SAW. <b><u>Intended Use:</u></b> This specification covers the welding materials described in <a>6.1.1.1</a> through <a>6.1.1.11</a> which, when deposited on the applicable base metals specified in <a>4.4</a>, will meet the mechanical properties specified herein for the different welding processes and conditions. Type MIL-70S-1 electrode is primarily used for multiple pass welding killed steel. Type MIL-70S-2 electrode contains aluminum, zirconium, and titanium in addition to the silicon and manganese content. This electrode is particularly adapted to producing sound welds in semi-killed and rimmed steels as well as killed steels. Type MIL-70S-3 electrode has a higher silicon content than type MIL-70S-1. This electrode can be used to make multiple pass welds in semi-killed and killed steels. Type MIL-70S-4 electrode has a higher silicon content than type MIL-70S-3. This electrode is used where welding application requires a higher arc voltage or conditions require more deoxidization than type MIL-70S-3, Type MIL-70S-5 electrode contains manganese, silicon, and aluminum. This electrode should be used only for structural work when exceptional deoxidization of weld metal is required. Type MIL-70S-6 electrode contains a high manganese and silicon content and produces welds with high impact properties. Type MIL-70S-7 electrode contains a high manganese mild steel composition which is capable of attaining table V properties when deposited by the SAW process. Type MIL-70S-8 electrode is an intermediate manganese-molybdenum composition which is used in SAW welding of mild steel. Type MIL-70S-9 electrode is a high manganese-molybdenum composition for SAW welding which retains the highest mechanical properties after stress relief. Restricted copper electrodes and rods will used when specified in <a>6.2</a> (see <a>table I</a>). Type MIL-70S-F is a neutral granular flux intended for submerged arc welding with the type MIL-70S series electrodes. <br>