D397 die welding electrodes meet the GB EDRCrMnMo-15 
 Description: D397 is a low hydrogen sodium type coating CrMnMo Hot welding electrodes, the use of DCRP. Surfacing layer of martensite + retained austenite, are resistant to wear and abrasive wear between the metal properties. 

 Uses: Used for welding of cast or forged green body of the forging die can also be used to repair 5CrMnMo, 5CrNiMo, 5CrNiSiW old forging die steel or welding high-strength wear-resistant parts. 

 Chemical Composition of Deposited Metal (%) Chemical Composition C Mn Si SP Mo Cr 
 Guaranteed value ≤ 0.60 ≤ 2.50 ≤ 1.00 ≤ 0.035 ≤ 0.040 ≤ 1.00 ≤ 2.00 

 Surfacing layer hardness: (welding followed by air cooling) HRC ≥ 40 
 Reference Current (DC +) electrode diameter (mm) φ3.2 φ4.0 φ5.0 
 Welding current (A) 100 ~ 120 140 ~ 190 190 ~ 210 

 Note: 
 1. Welding electrodes shall be subject to 300 ℃ or so before baking 1h. 
 2. Preheating before welding the workpiece to be over 250 ℃, slow cooling after welding.