Incoloy Wire: Economic Corrosion Protection for Aggressive Acid Service

A Louisiana sulfuric acid plant lost $1.4M when ER309L overlays dissolved in 93% H2SO4 at 320°F within 8 months Incoloy 825 wire has provided 5+ years continuous service at 40% material cost savings.

Table of Contents:

Stainless steel weld overlays fail catastrophically in hot sulfuric acid, contributing to 38% of chemical plant maintenance expenses. Incoloy Wire, particularly UNS N08825 per ASTM B425, offers premium corrosion resistance at stainless pricing through optimized nickel-iron-chromium chemistry.

This economical filler wire serves fabricators, OEMs, procurement managers, and industrial distributors across chemical processing, oil & gas, marine, pharma, and power generation. DIN 2.4858 compliant with AWS ERNiFeCr-1 classification. Complete technical specifications follow.

Specifications by Grade – Wire

A specification is written for a product form. The standards below are the ones that cover wire; the plate, bar and tube specifications for these grades are different documents and are listed on their own pages.

GradeUNSWire specification
800N08800ISO 9724 / BS 3075NA15
800HN08810ISO 9724 / BS 3075NA15
800HTN08811ISO 9724 / BS 3075NA15
825N08825ASTM B425

Product Forms and Packaging Options

Incoloy Wire supports diverse welding and spring applications:

  • Diameters: 0.020"–0.188" (0.5–4.8mm) precision drawn.
  • Spooling: 2lb–44lb (1–20kg) plastic/steel spools; cut lengths available.
  • Conditions: Bright drawn, stress-relieved, or oxide coated for GTAW.

Matching Incoloy hex bar stock supports weld joint preparation. Global export from Mumbai drawing facilities.