Harris Products Group, E70S3H8, MIG Welding Alloy, ER70S-3, General Purpose, 0.035 in, 75/25 Ar/CO2

ER70S-3 mild steel MIG (GMAW) alloy is a general purpose welding alloy for fabrication of mild steel. It contains silicon and manganese as deoxidizers. Usually used with 75/25 argon/carbon dioxide or with higher contents of argon, such as 90/10. It can also be used with 100% carbon dioxide. Qualified to AWS A5.18 ER70S-3.

Features

• General Purpose MIG (GMAW) welding wire for fabrication of mild steel
• Good out-of-position welding using short circuiting transfer with 90% argon/10% carbon dioxide
• Performance is good over mill scale and rust using carbon dioxide
• Contains silicon and manganese as deoxidizers
• Conforms to AISI/AWS A5.18 & ASME SFA 5.18 ER 70S-3

• Classification: ER70S-3
• Welding Process: MIG (GMAW)
• Material: Mild Steel
• Composition: Silicon 0.45-0.75%, Manganese 0.90-1.40%, Carbon 0.06-0.15%, Chromium 0.15% max., Copper 0.50% max., Sulfur 0.035% max., Nickel 0.15% max., Phosphorus 0.025% max., Vanadium 0.03% max., Molybdenum 0.15% max., Iron Balance
• Tensile Strength: 74,000-83,000 psi
• Yield Strength: 60,400-66,200 psi
• Elongation: 22.2-28%
• Reduction of Area: 35-70%
• Charpy V-notch Impact: 58-81 ft-lbs
• Recommended Amperage Range (0.023 in Wire): 85-170 A
• Recommended Amperage Range (0.030 in Wire): 135-230 A
• Recommended Amperage Range (0.035 in Wire): 165-300 A
• Recommended Amperage Range (0.045 in Wire): 200-375 A
• Recommended Amperage Range (1/16 in Wire): 275-500 A
• Recommended Amperage Range (3/32 in Wire): 300-600 A
• Recommended Voltage Range (0.023 in Wire): 23-27 V
• Recommended Voltage Range (0.030 in Wire): 24-28 V
• Recommended Voltage Range (0.035 in Wire): 24-28 V
• Recommended Voltage Range (0.045 in Wire): 24-30 V
• Recommended Voltage Range (1/16 in Wire): 24-32 V
• Recommended Voltage Range (3/32 in Wire): 24-30 V
• Wire Feed Speed Range (0.023 in Wire): 360-620 ipm
• Wire Feed Speed Range (0.030 in Wire): 390-670 ipm
• Wire Feed Speed Range (0.035 in Wire): 360-520 ipm
• Wire Feed Speed Range (0.045 in Wire): 210-390 ipm
• Wire Feed Speed Range (1/16 in Wire): 150-360 ipm
• Wire Feed Speed Range (3/32 in Wire): 75-125 ipm
• Shielding Gas: 75% Argon / 25% CO2, 90% Argon / 10% CO2, 100% CO2
• Specification Compliance: AISI/AWS A5.18, ASME SFA 5.18

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