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AWS A 5.11 ENiCrMo-3
1kg,2kg,5kg,10kg,20kg
1lb;2lb;4.5lb;11lb;15lb;20lb;33lb;44lb
0.6mm;0.8mm;0.9mm;1.0mm;1.2mm;1.6;2.0mm
0.023;0.030in;0.035in;3/64″;0.045;1/16″;5/64″
1.6mm,2.0mm,2.4mm,3.2mm,4.0mm,5.0mm
1/16 ″in;5/64″in;3/32″in;1/8″in;5/32″inch
D100,D200,D270,D300,BS300,K300
Acceptable (design the pack with your logo)
15 Days
Product Description
AWS A5.14 is the American Welding Society's specification for **nickel and nickel-alloy bare welding electrodes and rods**. ENiCrMo-3 specifically refers to a **covered electrode (SMAW)**, while ERNiCrMo-3 denotes a **bare rod (TIG/GTAW) or wire (MIG/GMAW)**. Both are composed of a nickel-chromium-molybdenum alloy, widely recognized for its exceptional corrosion resistance and high-temperature strength.
The primary alloying elements are **nickel** (typically over 58%), **chromium** (20-23%), and **molybdenum** (8-10%). It also contains significant additions of **niobium (columbium)** and **tantalum** (combined 3.15-4.15%), which act as carbide stabilizers and strengtheners. This precise composition contributes to its superior performance.
These consumables are primarily used for welding **nickel-chromium-molybdenum alloys** such as Inconel 625. They are also excellent for joining other nickel alloys like Inconel 600, Incoloy 800, and Incoloy 825, as well as high-alloy austenitic and super austenitic stainless steels (e.g., 254SMO, 904L). Their versatility extends to **dissimilar metal welding**.
ERNiCrMo-3 provides outstanding **corrosion resistance** across a wide spectrum of aggressive environments. This includes excellent resistance to pitting and crevice corrosion in chloride-containing media, stress corrosion cracking, and superior resistance to both oxidizing and reducing acids, such as sulfuric, phosphoric, and hydrochloric acids. This makes it a go-to for **harsh chemical environments**.
This alloy offers exceptional **high-temperature strength**, good oxidation resistance, and excellent fatigue and creep resistance. It maintains its mechanical properties from **cryogenic temperatures** up to approximately 1800°F (982°C), making it suitable for demanding thermal applications. It's a true **high-performance welding material**.
Yes, absolutely. ENiCrMo-3 and ERNiCrMo-3 are highly recommended for **dissimilar metal welding**, including joining stainless steel to carbon steel or low-alloy steels. Its unique composition helps accommodate differences in thermal expansion and prevents cracking, providing a strong and corrosion-resistant transition joint. It's a premier **dissimilar joint solution**.
ERNiCrMo-3 is widely available as a **bare TIG (GTAW) rod** for precise, high-quality welds and as a **bare MIG (GMAW) wire** for higher deposition rates and productivity. Some variations are also available for submerged arc welding (SAW) and flux-cored arc welding (FCAW), offering versatility across various fabrication needs.
Niobium (often referred to as columbium) acts as a **carbide stabilizer** in the alloy. It combines with carbon, preventing the formation of harmful chromium carbides at grain boundaries. This is crucial for maintaining the alloy's corrosion resistance in the heat-affected zone and enhancing its high-temperature strength, particularly after thermal exposure. It helps control **intergranular corrosion**.
Generally, post-weld heat treatment is **not required** for welds made with ENiCrMo-3 or ERNiCrMo-3. In fact, for some applications, PWHT could even be detrimental. However, specific project codes or thick-section welding might warrant stress relief in certain situations. Always consult the applicable welding procedure specification (WPS).
Common applications include components in the **chemical processing industry** (tanks, piping, heat exchangers), marine applications (seawater piping, offshore structures), nuclear power plants, pollution control equipment, and aerospace components. Its combination of strength and corrosion resistance makes it ideal for highly demanding environments. It’s a workhorse in **critical infrastructure**.
The significant molybdenum content (8-10%) in ERNiCrMo-3 is vital for enhancing its **resistance to pitting and crevice corrosion**, especially in chloride-containing solutions. Molybdenum also improves resistance to reducing acids and strengthens the alloy's overall corrosion performance by forming stable phases within the microstructure. It's key to **localized corrosion prevention**.
Preheating is generally **not required** for welding nickel alloys like Inconel 625 or using ERNiCrMo-3, unless joining to a base metal (like certain steels) that specifically requires it for metallurgical reasons. For very thick sections or highly restrained joints, a moderate preheat (e.g., 150-250°F / 65-120°C) might be considered to control distortion and residual stress, but excessive preheat should be avoided.
While both are nickel-chromium-molybdenum alloys, ERNiCrMo-4 (associated with Hastelloy C-276) contains additional tungsten and typically higher molybdenum, offering **even broader and often superior corrosion resistance** in extremely aggressive oxidizing and reducing environments. ERNiCrMo-3 (Inconel 625 type) is incredibly versatile but ERNiCrMo-4 is designed for the absolute harshest chemical services. The choice depends on the specific **corrosive media**.
The ERNiCrMo-3 MIG wire offers **higher deposition rates** and **increased productivity**, making it ideal for thicker materials and production welding. It's generally faster to use than TIG rods, reducing overall fabrication time and labor costs. However, TIG often provides better arc control and a cleaner bead for critical, thinner sections. It's a trade-off between **efficiency and precision**.
Cleanliness is **absolutely critical**. Any contaminants (oil, grease, paint, oxides, moisture, chalk, or foreign metals) on the base metal or filler metal can lead to severe weld defects like porosity, cracking, and loss of corrosion resistance. Thorough mechanical and chemical cleaning just prior to welding is essential. This is paramount for **weld integrity**.
Yes, ENiCrMo-3 covered electrodes are frequently used for **surfacing or cladding** steel components where a corrosion-resistant and high-strength nickel-chromium-molybdenum layer is required. It provides excellent bonding and a robust overlay, extending the life of less expensive base materials in aggressive environments. It's an effective **corrosion-resistant overlay**.
For TIG (GTAW) welding with ERNiCrMo-3, **100% pure argon** is the most common and generally recommended shielding gas. For specific applications or to enhance penetration and arc stability, argon-helium mixtures can be used. Avoid hydrogen or nitrogen additions unless specifically recommended for a particular process or alloy variant. Optimal **shielding gas purity** is vital.
For MIG (GMAW) welding with ERNiCrMo-3 wire, **100% pure argon** is a common choice for spray transfer. However, **argon-helium mixtures** (e.g., 75% Ar / 25% He, or 50% Ar / 50% He) are often preferred, especially with pulsed MIG, to provide better arc stability, improved wetting, and reduce spatter. The choice of gas impacts **arc characteristics and bead profile**.
ENiCrMo-3 covered electrodes are typically used with **Direct Current Electrode Positive (DCEP)**, also known as reverse polarity. The amperage range will vary depending on the electrode diameter, but typically falls between 60-160 amps for common sizes like 3/32" to 5/32". Always consult the manufacturer's data sheet for specific recommended **amperage settings**.
Yes, ERNiCrMo-3 welds exhibit excellent **toughness and strength at cryogenic temperatures**, making them highly suitable for applications involving liquefied natural gas (LNG), industrial gases, and other low-temperature processes. Its microstructure remains stable and ductile even at extreme cold. It's a reliable choice for **cryogenic service**.
ERNiCrMo-3 is a nickel-chromium-molybdenum alloy (Inconel 625 type) known for exceptional corrosion resistance and high strength. ERNiCr-3 is a nickel-chromium-niobium alloy (Inconel 82/182 type), also offering good strength and corrosion resistance, and is particularly noted for its versatility in **dissimilar metal welding** and crack resistance. While both are versatile, ERNiCrMo-3 generally offers superior overall corrosion resistance and higher strength. The specific **alloying elements** drive their performance differences.
Yes, ENiCrMo-3 covered electrodes are frequently used for **pipe welding**, especially in critical applications within the chemical, oil & gas, and power generation industries where corrosion resistance and high-temperature performance are paramount. Skilled welders can achieve high-quality root and fill passes in various positions. It's a robust **pipe welding electrode**.
Weld metal deposited by ERNiCrMo-3 typically exhibits high tensile strength (often exceeding 100,000 psi or 690 MPa), high yield strength, and excellent ductility and toughness. These properties ensure the weld's integrity under demanding service conditions. Its strength profile is a major reason for its use in **high-stress applications**.
To avoid porosity, ensure **meticulous cleanliness** of the base metal and filler wire, use dry and properly stored electrodes, maintain adequate shielding gas coverage, and optimize welding parameters (current, travel speed, arc length). Moisture and surface contaminants are primary causes. Strict adherence to **welding best practices** is key.
Yes, due to its exceptional corrosion resistance, ENiCrMo-3 is an excellent choice for **repair welding of corroded nickel alloy components** or for overlaying less resistant materials to enhance their corrosion protection. It effectively restores the integrity and performance of the component in aggressive environments.
The inherent high strength, ductility, and fine microstructure of the weld metal deposited by ERNiCrMo-3 contribute to excellent fatigue resistance. This is crucial for components exposed to cyclic loading, such as those in aerospace or rotating machinery. It ensures durability under **dynamic stress conditions**.
ERNiCrMo-3 is commonly used to join highly alloyed stainless steels, including **super duplex stainless steels** (e.g., 2507, 2205) and **super austenitic stainless steels** (e.g., 904L, 254SMO), especially when joining them to nickel alloys or when superior corrosion resistance is needed for the stainless-to-stainless joint in aggressive environments. It handles challenging **high-alloy stainless steel welding** scenarios.
Both forms require diligent storage. Bare wires should be kept in **sealed, moisture-proof packaging** or in a dry environment. Covered electrodes (ENiCrMo-3) are particularly susceptible to moisture pickup and should be stored in **heated electrode ovens** (e.g., 250-300°F / 120-150°C) and re-baked if exposed to atmosphere. Proper **consumable storage** prevents hydrogen-induced defects.
No, ERNiCrMo-3 is not suitable for welding cast iron. Cast iron requires specific nickel-based electrodes designed for that purpose, such as ENiFe-CI or ENi-CI, which can accommodate the high carbon content and brittleness of cast iron. Using ERNiCrMo-3 on cast iron would likely lead to severe cracking. Always use specialized **cast iron welding electrodes**.
The key benefits include unparalleled **corrosion resistance** in extreme environments, exceptional **high-temperature mechanical properties** (strength, creep, fatigue), excellent **ductility and toughness** across a broad temperature range, and reliable performance in **dissimilar metal joining**. These characteristics ensure the long-term integrity and reliability of components in the most demanding industries. It's a cornerstone for **high-integrity welding**.
