UNS K20590

ER80S-B2 (1.25Cr-0.5Mo) Wire

Cr-Mo wire for 1.25Cr-0.5Mo steel in boilers and petrochemical service to ~540 C.

Material overview

ER80S-B2 (1.25Cr-0.5Mo) Wire belongs to the Heat-Resistant Steel Welding Consumables section of the catalog. Cr-Mo wire for 1.25Cr-0.5Mo steel in boilers and petrochemical service to ~540 C. The technical review record highlights Creep and steam resistance, matched Cr-Mo, and preheat and PWHT required. Listed applications include Steam piping, superheaters, refinery heater tubes, and pressure vessels. The dataset currently includes 8 property records covering chemical composition and mechanical properties. Standards and product forms associated with the grade include A5.28, A5.5, and GB/T 17854 and Solid Wire / GTAW-GMAW Wire and Covered Electrode. Final material properties and delivery conditions must be verified against the applicable specification and inspection documents.

Key characteristics

  • Creep and steam resistance
  • matched Cr-Mo
  • preheat and PWHT required

Typical applications

  • Steam piping
  • superheaters
  • refinery heater tubes
  • pressure vessels

Grade names and equivalents

E8018-B2equivalentR30/R31equivalent

Technical properties

Typical values are for reference only. Final chemistry, mechanical properties, heat treatment, dimensions, inspection, and documentation are confirmed against the applicable specification and MTC/COA before order acceptance.

Chemical composition

PropertyValueUnitCondition / standard
C0.05-0.12wt%Typical value
Cr1.0-1.5wt%Typical value
Mo0.4-0.65wt%Typical value
Mn0.4-1.3wt%Typical value
Si0.3-0.7wt%Typical value

Mechanical properties

PropertyValueUnitCondition / standard
Tensile strengthmin 550MPaAfter PWHT
Yield strength 0.2%min 470MPaAfter PWHT
Elongationmin 17%After PWHT

Standards and specifications

Specification for Low-Alloy Steel Electrodes and Rods for Gas Shielded Arc WeldingSpecification for Low-Alloy Steel Electrodes for Shielded Metal Arc WeldingStainless Steel Welding Electrodes and Rods

Forms, applications, and capabilities

Product forms

  • Product form
  • Product form

Industries