Lincoln ER70S-2 TIG GTAW Welding Rod Clarity C71 LE or compare hardfacing options: Lincore

or compare hardfacing options: Lincore M for severe impact (austenitic manganese)

AISI 4340 is a high-hardenability

6 mm) Shielding Gas CO₂ or Ar/CO₂ blends Polarity DCEP (DC electrode positive) Welding Position Flat (PA / 1G) Hardness (Layer 1) 50–51 HRC Hardness (Layer 2) 53–54 HRC Hardness (Layer 4) 54–55 HRC Microstructure Martensitic — primary martensite with retained austenite and alloy carbides Wear Type Resistance Metal-to-metal sliding / rolling wear

All sizes within Harris E6011 Mild Steel share identical mechanical properties (AWS A5

Lincoln ER70S-2 TIG GTAW Welding Rod Clarity C71 LE or compare hardfacing options: Lincore