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AWS A5.9 ER430
1kg,5kg,15kg,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
1）Classification: This is a standard bare stainless steel filler metal under the American Welding Society (AWS) A5.9 specification, categorized as ferritic.
2）Composition: The "ER430" classification indicates a nominal composition of 15.5-17.0% chromium, with a low carbon content, and small percentages of other elements like manganese and silicon.
3）Application: Its primary use is for welding similar ferritic stainless steels, such as Type 430, which are commonly used for decorative trim, architectural components, and kitchen equipment.
4）Properties: The weld metal is non-hardenable by heat treatment. It has a ferritic microstructure, which gives it good ductility, but it can be susceptible to grain growth in the heat-affected zone, which may reduce toughness.
5）Heat Treatment: Unlike martensitic grades, this filler metal does not require a preheat or post-weld heat treatment to soften the weld. However, a post-weld anneal may be performed to relieve stress and restore ductility if necessary.
6）Usage: It is commonly used for a wide range of applications that require good corrosion resistance, particularly to atmospheric conditions and nitric acid, along with a bright finish. It's also used for cladding carbon steel with a corrosion-resistant layer.
AWS A5.9 ER430 Stainless Steel Welding Wire.pdf
Standard： AWS A 5.9 YB/T5092 | Chemical Composition % | ||||||||||||||
C | Mn | Si | Cr | Ni | P | S | Mo | Cu | |||||||
Grade ER430 | ≤0.10 | ≤ 0.6 | ≤ 0.5 | 15.5 – 17.0 | ≤ 0.60 | ≤0.03 | ≤0.03 | ≤0.75 | ≤0.75 | ||||||
Type | Spool (MIG) | Tube (TIG) | |||||||||||||
Specification ( MM ) | 0.8、0.9、1.0、1.2、1.6、2.0 | 1.6、2.0、2.4、3.2、4.0、5.0 | |||||||||||||
Package | S100/1kg S200/5kg S270,S300/15kg-20kg | 5kg/box 10kg/box length :1000MM | |||||||||||||
Diameter（MM） | 0.8 | 1.0 | 1.2 | 1.6 | 2.0 | 2.5 | 3.2 | ||||||||
Current （A） | 70 ~ 150 | 100 ~ 200 | 140 ~ 220 | 50 ~ 100 | 100 ~ 200 | 200 ~ 300 | 300 ~ 400 | ||||||||
AWS A5.9 ER430 Stainless Steel Welding Wire Parameters
| Diameter | Process | ||
| in | mm | ||
| 0.03 | 0.8 | GMAW | |
| 0.035 | 0.9 | GMAW | |
| 0.039 | 1.0 | GMAW | |
| 1/25.4” | |||
| 0.045 | 1.2 | GMAW | |
| 3/64” | |||
| 1/16” | 1.6 | GMAW | |
| 3/32” | 2.4 | GMAW | |
| Diameter | Process | ||
| in | mm | ||
| 1/16” | 1.6 | GTAW | |
| 3/32” | 2.4 | GTAW | |
| 1/8” | 3.2 | GTAW | |
| 5/32” | 4.0 | GTAW | |
| 3/16” | 4.8 | GTAW | |
| Weight | 0.5kg | 1kg | 2kg | 5kg | 15kg | 20kg | |||||
| 1 lb | 2 lb | 4 lb | 11 lb | 33 lb | 44 lb | ||||||
AWS A5.9 ER430 is a ferritic stainless steel filler metal.
It is used for welding similar-composition stainless steel grades and is known for its excellent atmospheric corrosion resistance and non-hardenable nature.
Ferritic refers to the metallurgical structure of the alloy.
Unlike martensitic or austenitic grades, ER430 maintains a ferritic structure at all temperatures, which means it is not hardenable by heat treatment.
Its primary use is for welding similar ferritic stainless steels, such as **Type 430**.
These grades are commonly found in applications like automotive trim, decorative architectural components, and kitchen equipment.
ER430 has a nominal composition of **15.5-17.0% chromium**.
It also contains small percentages of other elements like manganese and silicon, but it lacks nickel and molybdenum, making it a more cost-effective option than 300 series grades.
Generally, **preheating is not required** for welding with ER430, particularly for thin sections.
However, for thick sections, a mild preheat may be used to reduce the risk of cracking in the heat-affected zone.
Unlike hardenable martensitic grades, ER430 does not require post-weld heat treatment to soften the weld.
An optional **post-weld anneal** may be performed to improve ductility and relieve stress if the application demands it.
The main benefits are its **moderate corrosion resistance**, particularly to nitric acid and atmospheric conditions, and its good ductility.
It provides a strong, non-hardenable weld that is suitable for a wide range of applications.
ER430 is a versatile filler metal that can be used with several welding methods.
It is commonly used for **Gas Metal Arc Welding (GMAW/MIG)** and **Gas Tungsten Arc Welding (GTAW/TIG)**.
ER430 is generally **not recommended** for welding dissimilar metals.
Its ferritic nature can lead to brittleness and cracking when joined with other alloys, so it's best to use it for similar ferritic stainless steel grades.
ER430 is a staple in the **automotive industry** for components like exhaust pipes and trim.
It is also used in the **food service industry** for kitchen equipment and in architectural applications for decorative purposes.
ER430 has good oxidation resistance at elevated temperatures.
However, prolonged exposure to temperatures between 400°C and 540°C (750°F and 1000°F) can cause **475°C embrittlement**, reducing its ductility.
The tensile strength of an ER430 weld deposit is typically around **70,000 psi (480 MPa)**.
This provides a strong, durable joint that can handle moderate structural loads.
For Gas Metal Arc Welding (MIG), a shielding gas of **100% argon** is commonly used.
This provides a stable arc and helps to ensure a clean, high-quality weld.
The key difference is the metallurgy.
ER430 is **ferritic and non-hardenable**, while ER410 is **martensitic and air-hardening**, requiring heat treatment to achieve ductility.
Yes, ER430 is sometimes used for cladding carbon steel with a corrosion-resistant layer.
Its good ductility and moderate corrosion resistance make it a suitable choice for this purpose, but it is not as strong as the austenitic grades.
To prevent contamination and moisture absorption, the wire must be stored in a **clean, dry, and sealed environment**.
It is crucial to keep spools in their original sealed packaging until use to avoid weld defects.
Yes, the weld metal from ER430 is primarily ferritic.
This is the key characteristic of this alloy, which gives it its non-hardenable properties and good ductility.
The ferritic structure of ER430 is prone to grain growth in the heat-affected zone during welding.
This can lead to a reduction in toughness and ductility, so it's important to use low heat input and controlled welding procedures.
Choose **ER430** when you need a ferritic, non-hardenable weld with good atmospheric corrosion resistance.
Choose **ER308** for welding austenitic stainless steels, as it provides a higher degree of corrosion resistance and is more ductile.
No, ferritic stainless steels like ER430 become brittle at cryogenic temperatures.
For these applications, an austenitic filler metal like ER308 or ER316 would be a more suitable and safer choice.
