ERNiCr-3
Discover the exceptional qualities of our Ni base alloy solid welding wire designed for superior welding performance. This wire offers outstanding resistance to ductility dip cracking in weld metals, ensuring durability and strength. By enhancing the tensile strength of the weld metal to match or exceed that of the base material, it provides remarkable weldability for demanding applications.
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) This base metal ensures exceptional corrosion resistance for enduring strength.
Cr 18.0-22.0 Bolsters oxidation resistance for more robust welding outcomes.
Nb (+Ta) 2.0-3.0 Prevents intergranular corrosion through effective carbide stabilization.
Mn 2.5-3.5 Boosts toughness and minimizes the risk of hot cracking.
Fe ≤3.0 Ensures impurity control for higher-quality welds.
C ≤0.10 Reduces carbide precipitation, enhancing the longevity of welds.
S/P ≤0.015/≤0.030 Lowers brittleness, promoting more resilient welds.
2. Key Properties
Mechanical Performance:
Tensile Strength: ≥552 MPa (80,000 psi), ensuring robust and reliable welds.
Elongation: ≥30% (4d) . Provides exceptional ductility for versatile welding.
High-Temperature Capabilities:
Operating Range: -196°C to +550°C, perfect for pressure vessels needing endurance in extreme temperatures. Outstanding oxidation resistance up to 1200°C in sulfur-free environments.
Creep Rupture Strength: Superb under prolonged thermal stress, ideal for intensive applications.
Corrosion Resistance:
Unyielding against oxidation, stress corrosion cracking, and pitting in harsh environments, including acids like sulfuric and phosphoric, as well as urea.
3. Welding Applications
Compatible Alloys:
Nickel Alloys: Seamlessly compatible with INCONEL 600/601/690 and INCOLOY 800/800HT/330.
Dissimilar Metal Joints
Nickel alloys ↔ Carbon steel/stainless steel
INCOLOY 330 ↔ MONEL alloys.
Surface Cladding:
Perfect for corrosion-resistant overlays on carbon steel components, ensuring long-lasting protection.
Process Compatibility:
Optimal for TIG/GTAW, MIG/GMAW, and Submerged Arc Welding (SAW) applications.
SAW Flux Pairing: Recommended pairing with INCOFLUX 4 (used with NI-ROD 99 wire); ≤3 layers with INCOFLUX ensures consistent quality.
4. Industry Use Cases
Aerospace: Ideal for turbine blades and combustion chambers, offering exceptional high-temperature oxidation resistance.
Nuclear: Perfect for reactor vessels and fuel piping, providing remarkable creep strength even in radiation-heavy environments.
Chemical Processing: Optimal for reactors and heat exchangers, offering robust resistance to acid corrosion.
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| 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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