Everything You need to Know about AWS A5.11
Overview
AWS A5.11 is a commonly used standard. It is mainly used as a reference for nickel and nickel alloy welding electrodes. The standard covers many different grades. If you need to purchase nickel alloy welding electrode products, you must know more about this standard.
In this article, we will introduce the noteworthy requirements in AWS A5.11 in terms of grades, chemical composition, and mechanical properties. We believe it will be of great help to your purchase.
Grades & Chemical Composition
Grades
There are 39 grades in AWS A5.11. Among them, ENi-1 is pure nickel, and the rest are nickel alloys. They all have very good corrosion resistance. All grades in the standard are listed below:
In the previous article, we introduced the naming rules of various grades in the AWS A5.14 standard. In AWS A5.11, grades also have the same naming rules:
Among them, E stands for electrode. This represents the material that can be used as an electrode for welding.
Categories represent the main chemical compositon of the material. In AWS A5.11, there are mainly the following common categories: NiCu, NiCr, NiCrFe, NiMo, NiCrMo. For example: NiCu stands for nickel-copper alloy, and its main components are nickel and copper.
Numbers represent alloys of the same class but with different compositions. For example: ENiCrMo-3 and ENiCrMo-4 are both nickel-chromium-molybdenum alloys, but the former has more chromium and the latter has more molybdenum.
In addition, some alloys in AWS A5.11 can correspond to some commonly used Monel, Inconel, Incoloy and Hastelloy alloys. For example, ENiCu-7 corresponds to Monel 400, and ENiCrMo-3 corresponds to Inconel 625. However, the corresponding two alloys are not necessarily exactly the same, and some have subtle differences in chemical composition, and some even have different UNS numbers.
There are fewer grades in AWS A5.11 compared to AWS A5.14. However, almost every grade in AWS A5.11 can be found in AWS A5.14. It is worth noting that even if it is the same grade, the chemical composition in the two standards is different. Therefore, please confirm carefully when purchasing.
Chemical Composition
MONEL
400
Si
C
Mn
Fe
Al
Ti
Cu
Ni
INCONEL
600
Si
C
Mn
Ti
Cu
Nb
Ta
Fe
Cr
Ni
602CA
Si
C
Mn
Al
Co
Fe
Cr
Ni
617
Si
C
Mn
Cu
Co
Mo
Fe
Cr
Ni
625
Si
C
Mn
Cu
Co
Nb
Ta
Mo
Fe
Cr
Ni
686
Mn
Cu
W
Mo
Fe
Cr
Ni
690
Si
Mn
Al
Ti
Fe
Cr
Ni
HASTELLOY
B
Si
Mn
Cu
Co
V
W
Fe
Mo
Cr
Ni
B-2
Mn
Cu
Co
W
Fe
Mo
Cr
Ni
B-3
Mn
Co
W
Fe
Mo
Cr
Ni
C-4
Mn
Ti
Cu
Co
W
Fe
Mo
Cr
Ni
C-22
Mn
Cu
Co
V
W
Fe
Mo
Cr
Ni
C-276
Mn
Cu
Co
V
W
Fe
Mo
Cr
Ni
C-2000
Cu
Co
Fe
Mo
Cr
Ni
G-3
Si
Mn
Cu
Co
W
Fe
Mo
Cr
Ni
G-30
Si
Mn
Cu
Co
W
Fe
Mo
Cr
Ni
G-35
Si
Al
Co
V
W
Fe
Mo
Cr
Ni
X
Si
Mn
Co
W
Fe
Mo
Cr
Ni
Nickel-copper alloys should be chemically analyzed in accordance with ASTM E76; remaining nickel alloys should be chemically analyzed in accordance with ASTM E354 and ASTM E1473.
Product Properties
Products in AWS A5.11
Monel 400 Welding Electrode
Inconel 600 Welding Electrode
Inconel 602CA Welding Electrode
Inconel 617 Welding Electrode
Inconel 625 Welding Electrode
Inconel 686 Welding Electrode
Inconel 690 Welding Electrode
Hastelloy B Welding Electrode
Hastelloy B-2 Welding Electrode
Hastelloy B-3 Welding Electrode
Hastelloy C-4 Welding Electrode
Hastelloy C-22 Welding Electrode
Hastelloy C-276 Welding Electrode
Hastelloy C-2000 Welding Electrode
Hastelloy G-3 Welding Electrode
Hastelloy G-30 Welding Electrode
Hastelloy G-35 Welding Electrode
Hastelloy X Welding Electrode
Welding electrodes are the only product form in AWS A5.11. It is a welding material composed of core wire and covering. It is mainly suitable for shielded metal arc welding (SMAW). It is often used for welding between nickel alloys and nickel alloys or between nickel alloys and steels.
Mechanical Properties
The supplier shall ensure that the material can meet the mechanical properties listed in the following table after welding:
| AWS Classification | Tensile Strength, min. | Elongation Percent, min. | |
|---|---|---|---|
| ksi | MPa | ||
| Ni | |||
| ENi-1 | 60 | 410 | 20 |
| NiCr | |||
| ENiCr-4 | 110 | 760 | — |
| NiCu | |||
| ENiCu-7 | 70 | 480 | 30 |
| NiCrFe | |||
| ENiCrFe-1 | 80 | 550 | 30 |
| ENiCrFe-2 | |||
| ENiCrFe-3 | |||
| ENiCrFe-7 | |||
| ENiCrFe-13 | |||
| ENiCrFe-4 | 95 | 650 | 20 |
| ENiCrFe-12 | |||
| ENiCrFe-9 | 95 | 650 | 25 |
| ENiCrFe-10 | |||
| NiCrFeSi | |||
| ENiCrFeSi-1 | 90 | 620 | 20 |
| NiMo | |||
| ENiMo-8 | 95 | 650 | 25 |
| ENiMo-9 | |||
| ENiMo-1 | 100 | 690 | 25 |
| ENiMo-3 | |||
| ENiMo-7 | |||
| ENiMo-10 | |||
| ENiMo-11 | |||
| NiCrMo | |||
| ENiCrMo-11 | 85 | 590 | 25 |
| ENiCrMo-22 | |||
| ENiCrMo-1 | 90 | 620 | 20 |
| ENiCrMo-9 | 90 | 620 | 25 |
| ENiCrMo-6 | 90 | 620 | 35 |
| ENiCrMo-2 | 95 | 650 | 20 |
| ENiCrMo-18 | 95 | 650 | 30 |
| ENiCrMo-12 | 95 | 650 | 35 |
| ENiCrMo-4 | 100 | 690 | 25 |
| ENiCrMo-5 | |||
| ENiCrMo-7 | |||
| ENiCrMo-10 | |||
| ENiCrMo-13 | |||
| ENiCrMo-17 | |||
| ENiCrMo-14 | 100 | 690 | 30 |
| ENiCrMo-3 | 110 | 760 | 30 |
| ENiCrMo-19 | 120 | 830 | 20 |
| NiCrCoMo | |||
| ENiCrCoMo-1 | 90 | 620 | 25 |
| NiCrWMo | |||
| ENiCrWMo-1 | 90 | 620 | 20 |
AWS A5.11 not only requires the tensile strength of the material, but also the elongation is an important performance indicator.
Dimension
The following table is the standard size of nickel alloy welding electrodes. It should be noted that different sizes are suitable for different welding positions. Please be sure to confirm before purchasing.
| Electrode Size (Core Wire Diameter) |
Standard Lengths | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ENi-1 | ENiCr-4 | ENiCu-7 | ENiCrFe-1, ENiCrFe-2, ENiCrFe-3, ENiCrFe-4, ENiCrFe-7, ENiCrFe-9, ENiCrFe-10, ENiCrFe-13, ENiCrMo-3 |
ENiCrFe-12, ENiCrFeSi-1, ENiMo-1, ENiMo-3, ENiMo-7, ENiMo-8, ENiMo-9, ENiMo-10, ENiMo-11, ENiCrMo-1, ENiCrMo-2, ENiCrMo-4, ENiCrMo-5, ENiCrMo-6, ENiCrMo-7, ENiCrMo-9, ENiCrMo-10, ENiCrMo-11, ENiCrMo-12, ENiCrMo-13, ENiCrMo-14, ENiCrMo-17, ENiCrMo-18, ENiCrMo-19, ENiCrMo-22, ENiCrCoMo-1, ENiCrWMo-1 |
|||||||
| in | mm | in | mm | in | mm | in | mm | in | mm | in | mm |
| 5/64 | 2.0 | 9 | 230 | 12 | 300 | 9 | 230 | 9 | 230 | 9 | 230 |
| 3/32 | 2.4 | 9 or 12 | 230 or 300 | 12 | 300 | 9 or 12 | 230 or 300 | 9 or 12 | 230 or 300 | 9 or 12 | 230 or 300 |
| — | 2.5 | — | 250 | 14 | 350 | — | 250 | — | 250 | — | 250 |
| 1/8 | 3.2 | 14 | 350 | 14 | 350 | 14 | 350 | 12 or 14 | 300 or 350 | 14 | 350 |
| 5/32 | 4.0 | 14 | 350 | 18 | 450 | 14 | 350 | 14 | 350 | 14 | 350 |
| 3/16 | 4.8 | 14 | 350 | 14 | 350 | 14 | 350 | 14 | 350 | ||
| — | 5.0 | — | 350 | — | 350 | — | — | — | — | ||
| 1/4 | 6.4 | — | — | 14 | 350 | — | — | — | — | ||
Certification
The supplier shall provide a material test certificate containing the following complete information before delivery:
Supplier and customer information, standard, size and quantity, chemical composition, mechanical properties, heat number, etc.
Conclusion
AWS A5.11 is a standard for nickel and nickel alloy welding electrodes. Nickel alloy welding electrodes are suitable for shielded metal arc welding (SMAW). Standards specify the chemical composition, mechanical properties, dimensions, and other requirements of materials. Suppliers shall produce in strict accordance with the standards.
We offer high performance nickel alloy welding electrodes. For commonly used materials, we also have a large stock. If you have any needs, please do not hesitate to contact us.
