Grades & Chemical Composition

Grades

There are 52 grades in AWS A5.14. What these grades have in common is that they are all nickel or nickel alloys. The grades in the standard are named in the following ways:

In AWS A5.14, all prefixes are ER. E stands for electrode. This means it can act as a conductive electrode. R stands for rod. This means that its product form is often solid wire or rod.

The second part of the grade name is the category. In the standard, except for a few complex grades, there are mainly the following general categories: Ni, NiCu, NiCr, NiCrFe / NiFeCr, NiNo, NiCrMo. These categories are named after their main composition. For example, NiCrMo means that the main components of this grade are nickel, chromium and molybdenum. In addition, there is a rule that elements that are former in the category name account for more. For example, the chromium content of NiCrFe is greater than the iron content, while NiFeCr is vice versa.

The third number in the brand name indicates the serial number. It is used to distinguish alloys of the same category but with different compositions. For example: both ERNiCrMo-3 and ERNiCrMo-4 are nickel-chromium-molybdenum alloys, but the former has more chromium and the latter has more molybdenum.

In general, the materials in AWS A5.14 are nickel or nickel alloys. They all have excellent corrosion resistance. Among these alloys, some correspond to some commonly used alloys. For example: ERNiCu-7 corresponds to Monel 400; ERNiCrMo-3 corresponds to Inconel 625. This means it is very suitable for welding this alloy. However, some materials are suitable for welding multiple alloys at the same time.

Chemical Composition

MONEL

INCONEL

INCOLOY

HASTELLOY

The supplier shall perform the chemical analysis of the alloy in accordance with ASTM E76, ASTM E354 & ASTM E1473.

It should be noted that for some grades in the standard, their chemical composition is different from the original alloy. For example, ERNiCu-7 corresponds to Monel 400, but their composition is different. ERNiCu-7 has made some adjustments on the basis of Monel 400 to make it more suitable for welding. You can also see that they have different UNS numbers (ERNiCu-7 is UNS N04060, Monel 400 is UNS N04400).

Product Properties

Products in AWS A5.14

Monel 400
Filler Metal Monel K-500
Filler Metal Inconel 600
Filler Metal Inconel 601
Filler Metal Inconel 602CA
Filler Metal Inconel 617
Filler Metal Inconel 625
Filler Metal Inconel 686
Filler Metal Inconel 690
Filler Metal Inconel 693
Filler Metal Inconel 718
Filler Metal Inconel 725
Filler Metal Incoloy 825
Filler Metal Incoloy 945X
Filler Metal Hastelloy B
Filler Metal Hastelloy B-2
Filler Metal Hastelloy B-3
Filler Metal Hastelloy C-4
Filler Metal Hastelloy C-22
Filler Metal Hastelloy C-276
Filler Metal Hastelloy C-2000
Filler Metal Hastelloy G-3
Filler Metal Hastelloy G-30
Filler Metal Hastelloy G-35
Filler Metal Hastelloy N
Filler Metal Hastelloy W
Filler Metal Hastelloy X
Filler Metal

AWS A5.14 applies to filler metal products. This is a welding material. It can be used in a variety of welding processes, such as: gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), submerged arc welding (SAW), plasma arc welding (PAW), etc.

Delivery State

Alloys in AWS A5.14 can also be classified into solid solution strengthened alloys and precipitation strengthened alloys. However, when these alloys are delivered in the form of filler metal, they are generally delivered in the form of bright annealing, because these products almost all require subsequent welding and processing.

Mechanical Properties

The following are the mechanical properties specified in the standard. It should be noted that these are the mechanical properties after welding rather than the mechanical properties of the filler metal itself. For precipitation strengthened alloys, the material needs to be aging treated after welding when measuring mechanical properties.

Dimension

According to different product forms, filler metal can be divided into welding wire and welding rod. Among them, the diameter of the welding wire is smaller, and the diameter of the welding rod is larger. The following table is the dimensions and tolerances of different forms of products stipulated in the standard:

Certification

The supplier shall provide the material test certificate at the time of delivery. The certificate needs to include customer information, supplier information, AWS standards, size, quantity, chemical composition, mechanical properties and heat number, etc.