Solid Wire
ER80S-B8 Welding Wire
ER80S-B8 is a copper-coated 9Cr-1Mo low alloy heat-resistant solid wire for GMAW (MIG/MAG) and GTAW (TIG). It is used for welding 9Cr-1Mo creep-resistant ste...
ER80S-B8
ER80S-B8 is a copper-coated 9Cr-1Mo low alloy heat-resistant solid wire for GMAW (MIG/MAG) and GTAW (TIG). It is used for welding 9Cr-1Mo creep-resistant steel, offering excellent high-temperature strength, oxidation resistance and corrosion resistance.
Features
• Provides stable high-temperature creep strength and oxidation resistance for 9Cr-1Mo weldments, suitable for long-term high-temperature service.
• Good resistance to high-temperature sulfur corrosion and hydrogen-induced cracking, ideal for power and petrochemical service environments.
• Smooth arc, low spatter and excellent bead appearance, ensuring easy operation and clean weld formation.
• Consistent chemical composition and stable mechanical properties, meeting standard requirements for high-temperature pressure equipment welding.
Diameter & Packaging
MIG：0.8 / 1.0 / 1.2 / 1.6 mm 5KG Spool / 15KG Spool
TIG：2.0 / 2.4 / 3.2 mm 5kg plastic tube
Welding Parameters
Polarity: DC+ (DCRP)
Shielding Gas
MIG/MAG: Ar + 5%~15% CO₂, Flow rate: 15–20 L/min
TIG: Pure Argon (99.99%)
Preheat & Interpass Temperature
200~250 ℃ (for thickness ≥12 mm or low ambient temperature) to prevent cold cracking.
Typical Φ1.2 mm MAG parameters: Current 160~220 A; Voltage 22~26 V
Deposited Metal Mechanical Properties
Tensile Strength: ≥585 MPa (85 ksi)
Yield Strength: ≥485 MPa
Elongation: ≥16 %
Charpy V-notch: ≥27 J
Applications
Suitable for welding 9Cr-1Mo heat-resistant steels including A335 P9, A213 T9 and F9 steel. Widely used in power plant boiler superheaters, reheaters, high-temperature steam pipelines, and petrochemical high-temperature& high-pressure hydrogenation equipment.
Welding Precautions
• Dedicated for 9Cr-1Mo steel welding; do not use for carbon steel, low-temperature steel or other chrome-moly steel grades.
• Remove all oil, rust, scale and moisture from the groove and surrounding base metal to avoid porosity and inclusions.
• Maintain strict preheat and interpass temperature control during welding to avoid brittle cracking.
• PWHT is mandatory for pressure-bearing and high-temperature components to achieve qualified weld mechanical performance.
• The continuous service temperature of welded joints shall not exceed 650 ℃.