ERNiCr-3
Our Ni base alloy solid welding wire, ERNiCr-3, is engineered to deliver unmatched performance. It stands out with its superb resistance to ductility dip cracking in weld metal. Elevate your weld metal's tensile strength to equal or surpass that of the base material, while enjoying exceptional weldability.
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) - Forms the robust base, providing outstanding corrosion resistance.
Cr 18.0-22.0 - Boosts oxidation resistance for durability in harsh environments.
Nb (+Ta) 2.0-3.0 - Ensures intergranular corrosion prevention via effective carbide stabilization.
Mn 2.5-3.5 - Enhances toughness and curtails the risk of hot cracking.
Fe ≤3.0 - Maintains quality through impurity control.
C ≤0.10 - Reduces the possibility of carbide precipitation.
S/P ≤0.015/≤0.030 - Minimizes brittleness, ensuring structural integrity.
2. Key Properties
Mechanical Performance:
Tensile Strength: ≥552 MPa (80,000 psi) - Delivers formidable strength for demanding applications.
Elongation: ≥30% (4d) - Offers excellent flexibility and resilience.
High-Temperature Capabilities:
Operating Range: -196°C to +550°C (ideal for pressure vessels) - Ensures reliability under extreme conditions. Oxidation resistance up to 1200°C (sulfur-free environments) - Provides robust protection against high-temperature oxidation.
Creep Rupture Strength: Demonstrates exceptional performance under sustained thermal stress.
Corrosion Resistance:
Remarkably resists oxidation, stress corrosion cracking, and pitting in aggressive environments like sulfuric, phosphoric acids, and urea.
3. Welding Applications
Compatible Alloys:
Nickel Alloys: Seamlessly integrates with 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 crafting corrosion-resistant overlays on carbon steel components.
Process Compatibility:
Perfect for TIG/GTAW, MIG/GMAW, and Submerged Arc Welding (SAW), ensuring versatile application.
SAW Flux Pairing: INCOFLUX 4 (when used with NI-ROD 99 wire); ≤3 layers with INCOFLUX - Guarantees effective flux pairing.
4. Industry Use Cases
Aerospace: Essential for turbine blades and combustion chambers, providing high-temperature oxidation resistance.
Nuclear: Perfect for reactor vessels and fuel piping, delivering superior creep strength even in radiation environments.
Chemical Processing: Optimal for reactors and heat exchangers, excelling in acid corrosion resistance.
5842e978
| 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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