ER80S-G meaning and its Specification


What is ER80S-G

ER80S-G is a Low-Alloy Steel Electrodes and filler wire for gas metal arc welding i.e. TIG and MIG-MAG welding. Electrodes and rods of the ER80S-G or ER90S-G classifications are those filler metals not included in the preceding classes and for which only certain mechanical property requirements are specified. The electrodes are intended for single and multiple-pass applications. The filler metal supplier should be consulted for the composition, properties, characteristics, and intended use of these classifications.

ER80S-G electrode specification & meaning

ER80S-G electrode specification is AWS A5.28 or ASME Section IX SFA 5.28. ER means electrode for TIG or MIG welding, 80 here means the Tensile strength of the wire in Ksi (80Ksi minimum), S means the wire is solid and not flux cored and G Means the classification as special and the chemical and shielding gas requirements are not specified. Chemical composition as required by the buyer can be requested to the supplier.

ER80S-G chemical composition

ER80S-G chemical properties are unclassified as per the electrode specification. SFA 5.28 calls although below minimum requirements for the chemical analysis:

”In order to meet the requirement of the ā€œGā€ classification, the electrode must have a minimum of one or more of the following: 0.50% Nickel, 0.30% Chromium, or 0.20% Molybdenum. The composition shall be reported, the requirements are those agreed to by the buyer and electrode manufacturer.”

ER80S-G Mechanical properties

The tensile strength of ER80S-G shall be minimum 80Ksi or 550 MPa. The Yield strength, percentage elongation and impact test requirements are not specified for ER80S-G consumables and shall be agreed between the manufacturer and the purchaser before placing the order. In practice, welding consumable manufacturers produce G classification rods and wires with different combinations to suits various requirements. So, you will find ER80S-G with different properties from one electrode manufacturer.

ER80S-G and ER80S-B2

Both ER80S-G and ER80S-B2 are low alloy solid wire consumables as per the AWS A 5.28 having the minimum tensile strength of 80Ksi or 550 MPa. The Yield strength of ER80S-B2 is 68 Ksi or 470 MPa with an elongation of 19% while ER80S-G requirements are not specified.

For impact toughness, as ER80S-B2 is used for high temperature applications, there is no requirements for toughness. While for ER80S-G, there can be impact requirements but only if agreed between the purchaser and supplier. For example, a buyer want ER80S-G with toughness requirements, then this shall be agreed before placing the order with the supplier.

ER80S-G TIG Wire

ER80S-G TIG wire is supplied according to the SFA 5.28. The requirements stated above are applicable for TIG and MIG wires of ER80S-G. You may find a number of ER80S-G from a same manufacturer with varied properties (Chemical & mechanical) to meet different customer or strength requirements. This is as permitted by the ASME Section IIC SFA 5.28 to modify the ER80S-G chemistry to meet different purchaser requirements.


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