ERNiCr-3
Introducing our Ni base alloy solid welding wire, expertly crafted for superior welds. This wire boasts exceptional cracking resistance, especially against ductility dip cracking, enhancing the tensile strength of your welds to match or even exceed that of the base material. With unparalleled weldability, it's the perfect choice for high-performance welding 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) Serves as the base metal, offering robust corrosion resistance.
Cr 18.0-22.0 Crucial for enhancing the wire's oxidation resistance.
Nb (+Ta) 2.0-3.0 Key for preventing intergranular corrosion by stabilizing carbides.
Mn 2.5-3.5 Boosts toughness while mitigating hot cracking.
Fe ≤3.0 Maintains impurity control for optimal performance.
C ≤0.10 Ensures minimal carbide precipitation, preserving weld quality.
S/P ≤0.015/≤0.030 Critical for reducing brittleness in the weld metal.
2. Key Properties
Mechanical Performance:
Tensile Strength: ≥552 MPa (80,000 psi) A hallmark of its robust mechanical properties.
Elongation: ≥30% (4d) Demonstrates significant flexibility and durability.
High-Temperature Capabilities:
Operating Range: -196°C to +550°C Ideal for pressure vessels with extensive temperature resilience; Offers oxidation resistance up to 1200°C in sulfur-free environments, showcasing its superior heat tolerance.
Creep Rupture Strength: Exceptional performance under sustained thermal stress, ensuring longevity.
Corrosion Resistance:
Excels in resisting oxidation, stress corrosion cracking, and pitting, especially in challenging environments such as sulfuric, phosphoric acids, and urea.
3. Welding Applications
Compatible Alloys:
Nickel Alloys: Perfectly matches with INCONEL 600/601/690, INCOLOY 800/800HT/330, ensuring versatility.
Dissimilar Metal Joints
Nickel alloys ↔ Carbon steel/stainless steel
INCOLOY 330 ↔ MONEL alloys.
Surface Cladding:
Optimal for corrosion-resistant overlays on carbon steel components, enhancing longevity and performance.
Process Compatibility:
Compatible with TIG/GTAW, MIG/GMAW, and Submerged Arc Welding (SAW), providing flexibility for various welding processes.
SAW Flux Pairing: Pairs seamlessly with INCOFLUX 4 (with NI-ROD 99 wire); Ensures high quality results with ≤3 layers using INCOFLUX.
4. Industry Use Cases
Aerospace: Essential for turbine blades and combustion chambers, offering high-temperature oxidation resistance.
Nuclear: Ideal for reactor vessels and fuel piping, providing creep strength in radioactive environments.
Chemical Processing: Perfect for reactors and heat exchangers, resisting acid corrosion with ease and reliability.
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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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