D642 High-Chromium Hardfacing

Material overview

D642 High-Chromium Hardfacing belongs to the Hardfacing & Wear Welding Consumables section of the catalog. Chromium-molybdenum hardfacing deposit resistant to cavitation and moderate abrasion. The technical review record highlights HRC 40-45, good cavitation and metal-to-metal wear, and moderate impact tolerance. Listed applications include Hydraulic turbine blades, pump impellers, water screens, and cavitation-exposed parts. The dataset currently includes 6 property records covering chemical composition and mechanical properties. Standards and product forms associated with the grade include A5.13 and A5.21 and Flux-Cored Wire and Covered Electrode. Final material properties and delivery conditions must be verified against the applicable specification and inspection documents.

Key characteristics

• HRC 40-45
• good cavitation and metal-to-metal wear
• moderate impact tolerance

Typical applications

• Hydraulic turbine blades
• pump impellers
• water screens
• cavitation-exposed parts

Grade names and equivalents

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.

Standards and specifications

Forms, applications, and capabilities