ERNiCr-3
Discover the cutting-edge Ni base alloy solid welding wire crafted for superior welding performance. Offering remarkable resistance to ductility dip cracking, this product ensures that the tensile strength of the weld metal is at least equivalent to the base material, all while boasting outstanding 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) Acts as the foundational metal, providing robust corrosion resistance.
Cr 18.0-22.0 Augments oxidation resistance, enhancing durability.
Nb (+Ta) 2.0-3.0 Stabilizes carbides to avert intergranular corrosion.
Mn 2.5-3.5 Bolsters toughness and minimizes risks of hot cracking.
Fe ≤3.0 Maintains purity by controlling impurities.
C ≤0.10 Reduces carbide precipitation to enhance weld integrity.
S/P ≤0.015/≤0.030 Minimizes brittleness for a more resilient weld.
2. Key Properties
Mechanical Performance:
Tensile Strength: ≥552 MPa (80,000 psi), ensuring robust structural support.
Elongation: ≥30% (4d), allowing flexibility and ductility in applications.
High-Temperature Capabilities:
Operating seamlessly from -196°C to +550°C in pressure vessels; Exhibits oxidation resistance up to 1200°C, ideal for sulfur-free environments.
Creep Rupture Strength: Unmatched performance under prolonged thermal stress conditions.
Corrosion Resistance:
Demonstrates exceptional resistance to oxidation, stress corrosion cracking, and pitting in acidic surroundings such as sulfuric, phosphoric, and urea environments.
3. Welding Applications
Compatible Alloys:
Optimally suited 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 creating durable, corrosion-resistant overlays on carbon steel components.
Process Compatibility:
Compatible with TIG/GTAW, MIG/GMAW, and Submerged Arc Welding (SAW) techniques.
SAW Flux Pairing: Works seamlessly with INCOFLUX 4 and NI-ROD 99 wire; Supports ≤3 layers with INCOFLUX.
4. Industry Use Cases
Aerospace: Perfect for turbine blades and combustion chambers, ensuring high-temperature oxidation resistance.
Nuclear: Essential for reactor vessels and fuel piping, providing exceptional creep strength in radiation-prone environments.
Chemical Processing: Ideal for reactors and heat exchangers with superior acid corrosion resistance.
bd21b393
| 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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