- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
AWS A5.9 ER307Si
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）Composition: AWS A5.9 ER307Si is an austenitic stainless steel welding wire characterized by its higher manganese (typically around 6-8%) and silicon content compared to standard ER307 grades. The "Si" suffix specifically indicates this increased silicon.
2）Ductility and Crack Resistance: The elevated manganese content in ER307Si significantly enhances the weld metal's ductility and provides excellent resistance to hot cracking, which is particularly beneficial when welding difficult-to-weld or crack-sensitive steels.
3）Weld Pool Characteristics: The higher silicon content improves the fluidity and wettability of the weld pool. This leads to a smoother, more stable arc, better bead appearance, and reduced spatter during welding, contributing to higher productivity and reduced post-weld cleanup.
4）Versatile Applications: It is a highly versatile wire widely used for joining and surfacing various materials, including work-hardenable steels, armor plate, 13% manganese (Hadfield) steels, and other difficult-to-weld or dissimilar steel combinations.
5）Dissimilar Metal Welding: ER307Si is particularly well-suited for welding dissimilar metals, such as stainless steel to mild or medium carbon steels, even when the carbon steel component requires post-weld heat treatment.
6）Buffer Layers and Hardfacing: Due to its excellent crack resistance and ductility, it is often recommended for creating stress-relaxing buffer layers on crack-sensitive base metals or as an intermediate layer before applying hardfacing. It also exhibits good scaling resistance at temperatures up to approximately 850°C (1560°F).
AWS A5.9 ER307Si Stainless Steel Welding Wire.pdf
Standard： AWS A 5.9 YB/T5092 | Chemical Composition % | ||||||||||||
C | Mn | Si | Cr | Ni | P | S | Mo | Cu | |||||
Grade ER307Si | 0.04–0.14 | 6.5– 8.0 | 0.65 – 1.00 | 18.5– 22 | 8– 10.75 | ≤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 | |||||||||||
Mechanical Properties | Tensile Strength Mpa | Elongation after fracture A（%） | |||||||||||
≥ 590 | ≥ 35 | ||||||||||||
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 ER307Si 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 ER307Si is a specific classification for an **austenitic stainless steel welding wire**.
It's primarily used for welding various types of steels, particularly those that are difficult to join or dissimilar.
The "Si" in its designation indicates a higher silicon content, which significantly influences its welding characteristics.
The standout chemical characteristics of ER307Si are its elevated **manganese (Mn)** and **silicon (Si)** content.
While it maintains the base composition of a 307 grade, these increased elements provide enhanced properties.
The precise percentages adhere to the AWS A5.9 specification for welding consumables.
The increased manganese in ER307Si significantly enhances the **ductility** of the weld metal.
This contributes to superior **crack resistance**, making it an excellent choice for welding crack-sensitive materials.
It helps to accommodate stresses during solidification and cooling, preventing the formation of hot cracks.
The elevated silicon content in ER307Si primarily improves the **weld pool fluidity** and **wettability**.
This leads to a smoother and more stable arc during the welding process.
Consequently, you'll observe a better **bead appearance**, reduced **spatter**, and an overall more user-friendly experience when using this **welding consumable**.
ER307Si is exceptionally versatile and is ideal for joining **work-hardenable steels**, **armor plate**, and 13% manganese steels (often referred to as **Hadfield steels**).
Its unique properties also make it a top choice for welding a wide range of **dissimilar metals**.
Absolutely, ER307Si is one of the most recommended **stainless steel filler metals** for joining dissimilar metals.
It performs exceptionally well when welding **stainless steel to mild steel** or medium carbon steels.
This includes applications where the carbon steel component might undergo subsequent **post-weld heat treatment**.
Yes, ER307Si is highly recommended for creating **buffer layers** on crack-sensitive base metals.
Its inherent ductility and crack resistance help to absorb stresses and prevent crack propagation from the base material.
It also serves as an excellent intermediate layer before applying **hardfacing** to ensure a robust and crack-free foundation.
Beyond its use in defense (armor plate), ER307Si finds applications in industries dealing with high-wear components, such as mining and construction, due to its ability to weld **wear-resistant steels**.
It's also utilized in the power generation and chemical industries for joining certain heat-resistant materials.
The weld metal deposited by ER307Si exhibits good scaling resistance at elevated temperatures.
It can generally withstand service temperatures up to approximately **850°C (1560°F)**.
This makes it suitable for applications exposed to moderate heat.
While ER307Si is quite forgiving due to its excellent crack resistance, specific **preheating** or **post-weld heat treatment (PWHT)** requirements can depend on the thickness and type of base metals being joined.
For highly restrained joints or certain alloy steels, consulting a welding engineer and relevant welding procedures is always advisable to ensure optimal weld integrity.
The primary difference lies in the enhanced silicon and manganese content of ER307Si.
This leads to superior weldability, improved bead appearance, and greater crack resistance compared to a standard ER307.
It essentially offers a more robust and user-friendly welding experience for challenging applications.
Due to its improved weld pool control facilitated by the silicon content, ER307Si generally offers good weldability in various positions.
However, successful out-of-position welding still depends on the welder's skill and the specific welding parameters used.
Proper technique and current settings are crucial for achieving quality welds in vertical or overhead positions.
For Gas Metal Arc Welding (GMAW) with ER307Si, common shielding gases include **argon (Ar)** mixtures with CO2 or small percentages of oxygen.
For Gas Tungsten Arc Welding (GTAW), pure argon is typically used.
The choice of shielding gas impacts arc stability, penetration, and spatter levels, so selecting the appropriate gas is important for optimal results with this **stainless steel filler wire**.
AWS A5.9 ER307Si is primarily designed for **Gas Metal Arc Welding (GMAW)**, also known as MIG welding, and **Gas Tungsten Arc Welding (GTAW)**, or TIG welding.
It can also be found in coated electrode (SMAW) or flux-cored (FCAW) variations under different AWS classifications, but the ER307Si classification specifically refers to solid wire for GMAW/GTAW.
Yes, as an austenitic stainless steel, ER307Si weld metal generally provides good **corrosion resistance**.
However, its primary strength is in its mechanical properties for joining difficult steels rather than extreme corrosion environments.
For highly corrosive applications, other stainless steel grades with higher alloy content might be more suitable.
"AWS A5.9" refers to the **American Welding Society (AWS) specification** that outlines the requirements for bare stainless steel welding electrodes and rods.
This standard ensures that the **welding wire** meets specific chemical composition, mechanical properties, and manufacturing quality standards.
It provides a consistent benchmark for **welding material** quality.
While austenitic stainless steels generally perform well at cryogenic temperatures, ER307Si is not typically the primary choice specifically for low-temperature service.
Other stainless steel filler metals like ER308L or ER316L are more commonly specified for cryogenic applications due to their optimized ferrite content and toughness at very low temperatures.
Always verify the specific application requirements against the material's properties.
As an **austenitic stainless steel**, the weld metal deposited by ER307Si is predominantly non-magnetic in its annealed state.
However, a small amount of **ferrite** (typically 3-10%) is often intentionally present in the microstructure to help prevent hot cracking.
This small amount of ferrite can give the weld metal a slight magnetic response, but it remains largely non-magnetic compared to ferritic or martensitic steels.
ER307Si welding wire is commonly supplied on spools for GMAW applications, with various spool sizes available to suit different welding machines and consumption rates.
For GTAW, it is often available in cut lengths (rods).
The packaging ensures the wire remains clean and protected from contamination until use, maintaining its integrity as a **high-quality welding solution**.
Detailed specifications, including precise chemical composition limits and mechanical property requirements, can be found in the official **AWS A5.9 standard**.
Manufacturers of ER307Si welding wire will also provide technical data sheets that outline their product's specific properties and recommended welding parameters.
Always refer to these documents for comprehensive information on this robust **stainless steel welding wire**.
