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Technical Guide

C-2000 (ERNiCrMo-17) Welding Wire Guide

AWS ERNiCrMo-17 / UNS N06200 — Welding wire specifications, parameters, and applications for nickel alloy fabrication.

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What is C-2000 (ERNiCrMo-17) Welding Wire Guide?

Hastelloy C-2000 (AWS ERNiCrMo-17) is a nickel-chromium-molybdenum-copper welding wire for welding Hastelloy C-2000 alloy. The copper addition provides enhanced resistance to reducing acids, making it versatile for both oxidizing and reducing environments.

Quick Specifications

ERNiCrMo-17
N06200
0.8 – 5.0 mm
GTAW / GMAW

What welding parameters are recommended for C-2000 (ERNiCrMo-17) Welding Wire Guide?

ParameterGTAWGMAW
Shielding GasArgon (99.995%)Ar + 2% He or Ar + 2% CO2
Gas Flow Rate8-15 L/min15-25 L/min
Wire Diameter1.6-3.2 mm0.8-1.6 mm
Current TypeDCENDCEP
Welding PositionAll positionsFlat / Horizontal

Where is C-2000 (ERNiCrMo-17) Welding Wire Guide used?

C-2000 welding wire is used in a wide range of demanding applications:

  • C-2000 Welding: Welding of Hastelloy C-2000 process equipment.
  • Chemical Processing: Welding for mixed acid environments.
  • Pharmaceutical: Welding of high-purity process systems.
  • Pollution Control: Welding of scrubber and gas treatment equipment.
  • Aggressive Media: Welding for environments with oxidizing and reducing acids.

Which product forms are available for C-2000 (ERNiCrMo-17) Welding Wire Guide?

Hangbo Alloy Group supplies C-2000 welding wire in the following forms:

  • TIG Wire: Straight lengths 1000 mm, diameters 1.6 mm, 2.0 mm, 2.4 mm, 3.2 mm.
  • MIG Wire: Precision-wound spools (D200, D300), diameters 0.8 mm, 1.0 mm, 1.2 mm, 1.6 mm.
  • SAW Wire: Coils for submerged arc welding, diameters 2.4 mm, 3.2 mm, 4.0 mm.

Which standards cover C-2000 (ERNiCrMo-17) Welding Wire Guide?

StandardDescription
AWS A5.14ERNiCrMo-17
ISO 18274S Ni 6200
EN ISO 18274S Ni 6200
ASME SFA-5.14ERNiCrMo-17

General references: Nickel Institute · AMPP · SAE International · ASTM International

Chemical Composition of ERNiCrMo-17 Welding Wire (wt%)

ElementContent (%)
Nickel (Ni)Balance
Chromium (Cr)22.0 – 24.0
Molybdenum (Mo)15.0 – 17.0
Copper (Cu)1.3 – 1.9
Iron (Fe)3.0 max
Carbon (C)0.01 max

What are the mechanical properties of C-2000 (ERNiCrMo-17) Welding Wire Guide deposited metal?

PropertyTypical Value
Tensile Strength690 MPa (100 ksi) min
Yield Strength (0.2%)310 MPa (45 ksi) min
Elongation40% min
Service Temperatureup to 1040°C (1900°F)

Values above are typical for as-welded Hastelloy C-2000 (ERNiCrMo-17) deposited metal under AWS A5.14 classification requirements. Actual results vary with welding process, heat input and shielding gas.

Why Choose Hastelloy C-2000 Welding Wire

  • Copper addition delivers outstanding resistance to reducing acids, particularly sulphuric and hydrofluoric acid.
  • High chromium content provides equally strong resistance to oxidising media — a rare dual capability.
  • Very low carbon (0.01% max) minimises carbide precipitation and preserves as-welded corrosion resistance.
  • Resists pitting and crevice corrosion in high-chloride process streams and brines.

What are the best practices for welding C-2000 (ERNiCrMo-17) Welding Wire Guide?

Follow these practical guidelines to obtain sound, corrosion-resistant welds with this filler metal:

  • Maintain interpass temperature below 120°C (250°F) to limit time in the sensitising range.
  • Use stringer beads rather than wide weaving to control heat input and avoid hot cracking.
  • Back-purge with argon on root passes for pipework to avoid oxide formation on the weld underside.
  • Remove all slag and oxides between passes; stainless steel wire brushes dedicated to nickel alloys only.

How do you select the right filler wire for C-2000 (ERNiCrMo-17) Welding Wire Guide?

Hastelloy C-2000 (ERNiCrMo-17) is the matching filler for its base alloy and is specified for joints where its particular corrosion or high-temperature performance is required. Match the wire form and diameter to the welding process and section thickness:

  • GTAW: 1.6-2.4 mm cut lengths for root passes and thin-wall piping; 3.2 mm for heavy fill passes.
  • GMAW: 0.8-1.2 mm spools for high-productivity vessel welding; 1.6 mm for thick plate and high-deposition joints.
  • SAW / strip cladding: 2.4-4.0 mm coils (or strip) for corrosion-resistant overlay on carbon steel.

The copper addition is what distinguishes C-2000 from other C-series fillers, so specify ERNiCrMo-17 by AWS class and UNS N06200 rather than a generic "Hastelloy C" wire. For duties where only oxidising-acid resistance is needed, see Hastelloy C-22 as an alternative.

Which base metals are compatible with C-2000 (ERNiCrMo-17) Welding Wire Guide?

ERNiCrMo-17 welds Hastelloy C-2000 to itself and is widely applied as a corrosion-resistant overlay on carbon-steel vessels and piping by GMAW, SAW or electro-slag strip cladding. The copper-bearing chemistry tolerates both oxidising and reducing acids, so a single wire can be stocked for mixed-acid plants rather than two different C-series fillers.

How should C-2000 (ERNiCrMo-17) Welding Wire Guide be stored, handled and certified?

Nickel-alloy filler metals are sensitive to moisture, surface contamination and trace impurities, so proper storage and handling are essential to weld integrity:

  • Store spools and cut lengths in a clean, dry area and keep original packaging sealed until use to avoid condensation and humidity pickup.
  • Remove oil, grease, sulphur, lead and phosphorus before welding — these impurities can cause hot cracking or embrittlement in nickel weld metal.
  • Use dedicated stainless-steel wire brushes and tools reserved for nickel alloys only, to prevent iron contamination.
  • For GTAW, keep the filler within the argon shield and maintain a short arc to prevent oxidation of the hot weld pool.

Hangbo Alloy Group supplies Hastelloy C-2000 (ERNiCrMo-17) welding wire with full EN 10204 3.1 material certificates, cast/lot traceability and chemical and mechanical test reports. Contact our sales team for batch-specific certification or technical support.

Frequently Asked Questions

What makes C-2000 different from C-276 welding wire?

C-2000 adds roughly 1.6% copper, markedly improving resistance to reducing acids such as sulphuric and hydrofluoric acid, while high chromium retains oxidising-acid resistance. See the Hastelloy C-276 vs C-22 comparison for related context.

Can Hastelloy C-2000 wire be used for weld overlay?

Yes. It is frequently applied as a corrosion-resistant overlay on carbon steel vessels and piping using GMAW, SAW or electro-slag strip cladding.

Is solution annealing needed after welding?

Not normally. The ultra-low carbon level allows as-welded service in most chemical process duties.

What is the chemical composition of C-2000 welding wire?

AWS ERNiCrMo-17 / UNS N06200 with about 22-24% chromium, 15-17% molybdenum and 1.3-1.9% copper, nickel balance and carbon held to 0.01% max. The copper addition is the key for reducing-acid resistance.

Which standards cover this filler metal?

AWS A5.14 (ERNiCrMo-17), ISO/EN 18274 (S Ni 6200) and ASME SFA-5.14. Order against the AWS classification and UNS number to remove ambiguity.

What diameters and forms are available?

TIG wire in 1.6, 2.0, 2.4 and 3.2 mm straight lengths, MIG wire on D200/D300 spools in 0.8-1.6 mm, and SAW coils in 2.4-4.0 mm.

What is the maximum service temperature of the deposited weld?

Up to about 1040 °C (1900 °F), with the low carbon content preserving as-welded corrosion resistance.

What shielding gas should I use?

Pure argon (99.995%) for GTAW; argon with 2% helium or 2% CO2 for GMAW.

How do I prevent sensitization during welding?

Keep interpass temperature below 120 °C, use stringer beads, and back-purge root passes with argon. The 0.01% max carbon also minimizes carbide precipitation.

Contact Us for C-2000

Hangbo Alloy Group supplies C-2000 (ERNiCrMo-17) welding wire with full material certifications. We ensure consistent wire quality with precise diameter control, clean surface finish, and uniform feeding performance.

For quotations, material certifications, or technical consultation, contact our sales team or call +86 13611656360.

Need C-2000 Material?

Request a quotation for C-2000 round bars, tubes, plates, or custom products. We stock standard sizes and accept custom orders.