What does the electrode strip E7108 stand for?
A welding rod is made up of six parts. For example, CHE507CrNiFe13 can be split into:1. (CH) two letter, the Atlantic product code.2. (E) a letter of electrode type.3. (50) two numbers, deposited metal strength or alloy type.4. (7) a number, type of skin and type of current.5. (CrNi) 1~2 letters, additional alloy elements or electrode characteristics.6. (Fe13) letters + two numbers, nominal efficiency of welding rod.1.CH: the Atlantic product code2. electrode type: (see Table 1)Type of electrode 1E carbon steel welding rod, low alloy steel welding rodL low alloy steel welding rod for low temperatureS chromium nickel austenitic stainless steel electrodeH low alloy steel and stainless steel welding rod for heat resistingK chromium stainless steel electrodeC cast iron welding rodN nickel and nickel alloy welding rodR surfacing electrodeCu copper and copper alloy weldingDeposited metal strength and alloy type: Table 2MarknumberStrength (MPa)Major alloy typesRemarksE 42By 0.2 o = 330 B = 420(S)Mn-SiFifty= 400 = 490= 390 = 490Mn-Si (Ni)Fifty-five= 440 = 540Mn-Si-MoSixty= 490 = 590Mn-Si-Mo (Ni)Seventy= 590 = 690Mn-Si-Mo (Ni)Seventy-five= 640 = 740Mn-Si-MoMn-Si-Ni-MoEighty= 690 = 780Mn-Si-Mo-V-NiEighty-five= 740 = 830Mn-Si-Ni-Mo-V-CrH1 xMo to 0.5%Second digit (x)Represents different grades in the same type2 xMo to 0.5% Cr to 0.5%3 xMo0.5 to 1% Cr to 2%4 xMo to 1% Cr to 2.5%5 xMo to 0.5% Cr to 5%7 xMo to 1% Cr to 9%8 xMo to 1% Cr to 11%R1 xOrdinary room temperature2 xOrdinary room temperature
E is the abbreviation of "electrode" in English, which means "welding rod". 71 represents the tensile strength of metal deposited by electrode. 0 indicates the welding position of welding rod, and 8 indicates the property of electrode coating.
According to the national standards GB/T 5117 and GB/T 5118, the electrode is defined as this:The first letter, "E" - represents an electrode. (what electrodes are indicated by E)?Second, third digit "71" - represents the minimum tensile strength of deposited metal material. (71 MPa)Fourth digit "0" - indicating the applicable welding position. (0 means for all positions, any one will do.)Fifth digit "8" - indicating the type of electrode coating and the type of current used. (8 iron powder, low hydrogen content skin, DC reverse connection)The other figures in the back are the chemical composition, material type, and so on. Generally speaking, the first five will be enough.
