ERNiCr-3
Our ERNiCr-3 is a superior Ni base alloy solid welding wire, renowned for its exceptional resistance to ductility dip cracking. It significantly enhances the tensile strength of the weld to meet or surpass that of the base material, ensuring an unparalleled welding performance.
1.Basic Specifications & Composition
Standards Compliance:
AWS A5.14: ERNiCr-3
DIN: SG-NiCr20Nb (Werkstoff Nr. 2.4806)
ISO/BS: SNi6082 / NiCr20Mn3Nb.
Chemical Composition:
Element Content (%) Role
Ni (+Co) ≥67.0 (72.9 typical) Serves as the base metal, providing robust corrosion resistance.
Cr 18.0-22.0 This element significantly boosts oxidation resistance.
Nb (+Ta) 2.0-3.0 These elements stabilize carbides, preventing intergranular corrosion.
Mn 2.5-3.5 Enhances toughness while minimizing hot cracking.
Fe ≤3.0 Controlled as an impurity to maintain quality.
C ≤0.10 Keeps carbide precipitation to a minimum.
S/P ≤0.015/≤0.030 Reduces brittleness for a reliable weld.
2. Key Properties
Mechanical Performance:
Tensile Strength: ≥552 MPa (80,000 psi), showcasing exceptional strength.
Elongation: ≥30% (4d), ensuring flexibility and durability.
High-Temperature Capabilities:
Operating Range: From -196°C to +550°C, specifically designed for pressure vessels; Boasts oxidation resistance up to 1200°C, ideal for sulfur-free environments.
Creep Rupture Strength: Outstanding performance under continuous thermal stress.
Corrosion Resistance:
Excellently withstands oxidation, stress corrosion cracking, and pitting in harsh acidic (such as sulfuric, phosphoric) and urea environments.
3. Welding Applications
Compatible Alloys:
Perfect for Nickel Alloys: such as INCONEL 600/601/690, INCOLOY 800/800HT/330.
Dissimilar Metal Joints
Seamlessly join Nickel alloys ↔ with Carbon steel/stainless steel
INCOLOY 330 ↔ MONEL alloys.
Surface Cladding:
Perfectly utilized for corrosion-resistant overlays, especially on carbon steel components.
Process Compatibility:
Compatible with TIG/GTAW, MIG/GMAW, and Submerged Arc Welding (SAW) processes.
SAW Flux Pairing: Use with INCOFLUX 4 (paired with NI-ROD 99 wire); Optimally perform with ≤3 layers using INCOFLUX.
4. Industry Use Cases
Aerospace: Ideal for turbine blades and combustion chambers, providing high-temperature oxidation resistance.
Nuclear: Perfect fit for reactor vessels and fuel piping, ensuring creep strength in radiation environments.
Chemical Processing: Suited for reactors and heat exchangers, offering superior acid corrosion resistance.
3a05d3cc
| 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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