Category » Mild & Low Alloy » Mild & Low Alloy Steel Bare Wire

ER70S-2

ER70S-2 is a premium welding wire designed for welding on all grades of mild and carbon steel, producing quality welds with minimal porosity. 70S-2 is also a triple deoxidized wire (Zirconium, Titanium, and Aluminum) making it an excellent choice for welding over rust and mill scale.

Typical Deposit Analysis
Cu C Ni Zr S V
0.50 max 0.07 max 0.15 max 0.02-0.12 0.035 max 0.03 max
Cr Fe Mn Mo Si Al
0.15 max bal. 0.90-1.40 0.15 max 0.40-0.70 0.05-0.15
Ti P        
0.05-0.15 0.025 max        
  • Specifications: AISI/AWS A5.18, ASME SFA 5.18
  • Classification: ER70S-2
  • Type of Power: GMAW-DCEP, GTAW-DCEN
Typical Deposit Characteristics
Tensile Strength 78000 psi
Yield Strength 60000 psi

***using 98%Ar/2%O2

ER70S-3

ER70S-3 is a premium mild steel solid wire, with silicon and manganese levels suitable for general purpose welding over clean to light levels of rust and mill scale. 70S-3 has the flexibility to provide trouble-free performance in heavy-duty, high-speed spray or pulse applications to lighter duty, lower speed short-arc applications. GMAW is designed for use with various gas mixtures such as CO2 ,75/25 Ar/CO2 or 98/2 Ar/O2. 70S-3 produces a smooth stable arc with low spatter, producing a weld bead that ties in evenly with the sides and has a smooth finished appearance.

Typical Deposit Analysis
Cu C Ni S Other V
.50 max .06-.15 0.15 max .035 max .50 max 0.03 max
Cr Fe Mn Mo Si P
0.15 max bal. 0.90-1.40 0.15 max 0.45-0.75 0.025 max
  • Specifications: AISI/AWS A5.18, ASME SFA 5.18
  • Classification: ER 70S-3
  • Type of Power: GMAW-DCEP, GTAW-DCEN
Typical Deposit Characteristics
Tensile Strength 82000 psi
Yield Strength 65000 psi

***using 98%Ar/2%O2

ER70S-6

ER70S-6 is a premium mild steel solid wire formulated to provide high quality welds and trouble-free performance from heavy duty, high speed, spray transfer applications all the way to light duty low speed, short-arc applications. 70S-6 GMAW is designed for use with various gas mixtures such as 100% CO2 ,75/25 Ar/CO2 or 98/2 Ar/O2. Even in the most difficult applications 70S-6 produces a smooth stable arc with low spatter, producing a weld bead that ties in evenly with the sides and has a smooth finished appearance.

Typical Deposit Analysis
Cu C Ni S Other V
0.50 max 0.06-0.15 0.15 max 0.035 max 0.50 max 0.15 max
Cr Fe Mn Mo Si P
0.15 max bal. 1.40-1.85 0.15 max 0.80-1.15 0.025 max
  • Specifications: AISI/AWS A5.18, ASME SFA 5.18
  • Classification: ER70S-6
  • Type of Power: GMAW-DCEP, GTAW-DCEN
Typical Deposit Characteristics
Tensile Strength 87000 psi
Yield Strength 74000 psi

***using 98%Ar/2%O2

ER70S-B2L

ER70S-B2L is identical to 80S-B2 except for the low-carbon content (1/2% maximum). It exhibits greater resistance to cracking and is more suitable for welds to be left in the as-welded condition or when the accuracy of the postweld heat treatment operation is questionable. The classification was previously ER80S-B2L but the strength requirements and classification designator have been changed to reflect the true strength capabilities due to the lower carbon content in the chemical composition.

Typical Deposit Analysis
Cu C Ni S Other Cr
0.35 max 0.05 max 0.20 max 0.025 max 0.50 max 1.20-1.50
Mn Mo Si P    
0.40-0.70 0.40-0.65 0.40-0.70 0.025 max    
  • Specifications: AWS A5.28, ASME SFA 5.28
  • Classification: ER70S-B2L
  • Type of Power: GMAW-DCEP, GTAW-DCEN
Typical Deposit Characteristics
Tensile Strength 75000 psi
Yield Strength 58000 psi

ER80S-B2

ER80S-B2 is used to weld 1¼% Cr - 1/2% Mo steels for elevated temperatures and corrosive service. Careful control of preheat, interpass temperatures, and post-weld heat treatment is necessary to prevent cracking. 80S-B2 is classified after post-weld heat treatment. Special care must be taken when using it in the as-welded condition due to higher strength levels. Recommended GMAW shielding gas is CO2 or an Argon/CO2 mixture.

Typical Deposit Analysis
Cu C Ni S Other Cr
0.35 max 0.07-0.12 0.20 max 0.025 max 0.50 max 1.20-1.50
Mn Mo Si P    
0.40-0.60 0.40-0.65 0.40-0.70 0.25 max    
  • Specifications: AWS A5.28, ASME SFA 5.28
  • Classification: ER80S-B2
  • Type of Power: GMAW-DCEP, GTAW-DCEN
Typical Deposit Characteristics
Tensile Strength 80000 psi
Yield Strength 68000 psi