Aisi 347 Stainless Steel
ER347 is an austenitic stainless steel welding wire enhanced with niobium (Nb), offering exceptional resistance to intergranular corrosion. Compliant with AWS A5.9, it suits MIG/MAG, TIG, and SAW processes, ideal for high-temperature applications in petrochemical, food processing, and power generation industries.
ER347 Stainless Steel Welding Wire: Properties, International Grades & Performance Comparison
Product Overview
ER347 is an austenitic stainless steel welding wire enhanced with niobium (Nb), offering exceptional resistance to intergranular corrosion. Compliant with AWS A5.9, it suits MIG/MAG, TIG, and SAW processes, ideal for high-temperature applications in petrochemical, food processing, and power generation industries.
Key Features
Corrosion Resistance
Nb stabilizes carbides, preventing sensitization in welded zones.
High-Temperature Strength
Stable up to 1000°C, outperforming 304/316 in creep resistance.
Weldability
Low spatter, smooth arc transfer, and excellent slag detachability.
Performance Comparison
|
Model |
Base Metal |
Advantages |
Limitations |
|
|
ER347 |
347/321 Stainless |
High-temperature resistance |
Higher cost |
|
|
ER308 |
304 Stainless |
Cost-effective |
Limited heat resistance |
|
|
ER316 |
316 Stainless |
Superior chloride resistance |
Sensitization risk at high temps |
Applications
Oil & Gas
Reactors, pipelines (sulfide corrosion resistance).
Energy
Nuclear components, boilers (oxidation resistance).
Food & Medical
Sanitary equipment (hygienic compliance).
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International Grade Equivalents
|
Country/Standard |
Grade |
Material Equivalent |
|
|
China |
H08Cr20Ni10Nb |
06Cr18Ni11Nb |
|
|
USA (AWS) |
ER347 |
AISI 347 |
|
|
Japan (JIS) |
SUS347 |
1Cr19Ni11Nb |
|
|
Europe (EN) |
W.-Nr. 1.4550 |
X6CrNiNb18-10 |
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