ERNiCr-3
Discover the exceptional Ni base alloy solid welding wire, ERNiCr-3, celebrated for its outstanding resistance to ductility dip cracking. This wire not only ensures cracking resistance but also elevates the tensile strength of your welds to meet or surpass the base material's strength, all while guaranteeing top-tier weldability.
1.Basic Specifications & Composition
Standards Compliance:
Adheres to AWS A5.14: ERNiCr-3, showcasing its premium quality.
DIN: SG-NiCr20Nb (Werkstoff Nr. 2.4806)
ISO/BS: SNi6082 / NiCr20Mn3Nb.
Chemical Composition:
Element Content (%) Role
Ni (+Co) ≥67.0 (72.9 typical) The core metal ensuring unmatched corrosion resistance.
Cr 18.0-22.0 Offers superior oxidation resistance.
Nb (+Ta) 2.0-3.0 Provides robust protection against intergranular corrosion through carbide stabilization.
Mn 2.5-3.5 Enhances toughness while mitigating hot cracking issues.
Fe ≤3.0 Controlled to maintain minimal impurities.
C ≤0.10 Keeps carbide precipitation to a minimum.
S/P ≤0.015/≤0.030 Helps reduce brittleness for enhanced reliability.
2. Key Properties
Mechanical Performance:
Tensile Strength: Reaches or exceeds 552 MPa (80,000 psi) for robust performance.
Elongation: Demonstrates a remarkable ≥30% (4d) elongation capacity.
High-Temperature Capabilities:
Works seamlessly from -196°C to +550°C, ideal for pressure vessels; Displays impressive oxidation resistance up to 1200°C in sulfur-free settings.
Creep Rupture Strength: Excels under sustained thermal stress for enduring reliability.
Corrosion Resistance:
Exhibits robust resistance against oxidation, stress corrosion cracking, and pitting in challenging environments like sulfuric, phosphoric acids, and urea.
3. Welding Applications
Compatible Alloys:
Perfect for Nickel Alloys like INCONEL 600/601/690, INCOLOY 800/800HT/330.
Dissimilar Metal Joints
Nickel alloys ↔ Carbon steel/stainless steel
INCOLOY 330 ↔ MONEL alloys.
Surface Cladding:
Ideal for corrosion-resistant overlays on carbon steel components, enhancing their durability.
Process Compatibility:
Compatible with TIG/GTAW, MIG/GMAW, and Submerged Arc Welding (SAW) for versatile applications.
SAW Flux Pairing: Pairs with INCOFLUX 4 when using NI-ROD 99 wire; Limited to ≤3 layers with INCOFLUX for optimal performance.
4. Industry Use Cases
Aerospace: Perfect for turbine blades and combustion chambers, providing high-temperature oxidation resistance.
Nuclear: Suitable for reactor vessels and fuel piping, offering creep strength in challenging radiation environments.
Chemical Processing: Ideal for reactors and heat exchangers, delivering exceptional acid corrosion resistance.
Energy: Reliable for boiler components and exhaust systems, ensuring durability through thermal cycling.
| AWS A5.4 |
ERNi-1 |
ERNiCu-7 |
ERNiCr-3 |
ERNiCrFe-5 |
ERNiCrMo-3 |
ERNiCrMo-4 |
ERNiFeCr-1 |
Tensile Strength
(N/mm2) |
514 |
541 |
671 |
651 |
819 |
729 |
602 |
Elongation
(%) |
44 |
39 |
41 |
45 |
39 |
45 |
33 |
| C |
0.02 |
0.02 |
0.03 |
0.06 |
0.037 |
0.012 |
0.02 |
| Mn |
0.24 |
3.21 |
3.05 |
0.51 |
0.06 |
0.5 |
0.5 |
| Si |
0.34 |
0.68 |
0.12 |
0.14 |
0.11 |
0.01 |
0.11 |
| P |
0.34 |
1.53 |
2.4 |
1.99 |
3.37 |
0.23 |
0.81 |
| Ti |
0.34 |
1.53 |
/ |
/ |
/ |
/ |
0.81 |
| S |
0.14 |
0.47 |
1.41 |
6.82 |
3.9 |
5.4 |
28.24 |
| Cr |
/ |
/ |
19.86 |
14.79 |
21.55 |
15.9 |
22.61 |
| Ni |
95.5 |
65.68 |
72.8 |
75.06 |
61.65 |
REM |
42.91 |
| Cu |
0.01 |
REM |
0.03 |
0.03 |
/ |
/ |
/ |
| Mo |
0.01 |
REM |
0.03 |
0.03 |
8.49 |
16 |
2.67 |
| Nb |
/ |
|
2.4 |
1.99 |
3.37 |
/ |
|
| V |
/ |
|
|
|
|
0.23 |
|
| Fe |
0.14 |
0.47 |
1.41 |
6.82 |
3.9 |
5.4 |
28.24 |
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