• AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire

• Designed for welding heat treatable base alloys

• Higher melting point and more fluidity

• Suitable for sustained elevated temperature service

• All position, include vertical down welding

• Gray - white(post anodized) color

Standard：AWS A 5.7     ERCuAl-A3	Chemical Composition %
	Cu	Al	Fe	---
Grade                 CuAl-A3	Rest	10.0 ~ 11.5	2.0 ~ 4.5	---

AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire.pdf

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（%）
	580 ~ 680				18 ~ 25

AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire is used in railway locomotives,welding arc stability, beautiful welding, strong crack resistance. Welding operation and fluidity of molten gold are better.

• AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire

• Choose Aluminum Bronze A3 welding wire Size in mm: 0.8mm / 0.9mm / 1.0mm / 1.2mm/ 1.6mm

• Choose Aluminum Bronze A3 welding wire Size in inch: 0.030 / 0.035 / 0.040 / 0.045/ 3/16 - 3/64

• Choose Aluminum Bronze A3 welding wire mig Spool Weight(Package): 0.5kg / 2kg / 7kg

• Choose Aluminum Bronze A3 welding wire Size:  1.2mm/ 1.6mm/ 2.0mm/ 2.4mm/ 3.2mm/ 4.0mm

• Choose Aluminum Bronze A3 welding wire Weight(Package): 5kg / 10kg / 1LB / 2LB / 4.5LB / 20LB

• AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire Requirements

  Standard & Classification

  Standard: AWS A5.7 / A5.7M 

  Classification: ERCuAl-A3 

• AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire Identification

   

  Primary Use: Described as an "all-purpose workhorse alloy" for copper-based filler metals . Used for joining aluminum bronze, brass, steel, cast iron, and various dissimilar metals; also used for wear- and corrosion-resistant overlays .

  Welding Processes: Designed for MIG (GMAW) and TIG (GTAW) welding .

  Shielding Gas: Requires 100% Argon or an Argon/Helium mixture .

•  AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire Packaging

  Filler metal shall be suitably packaged to ensure against damage during shipment and storage under normal conditions.        

  The following product information (as a minimum of low temperature aluminum welding wire)         

  shall be legibly marked so as to be visible from the outside of each unit package:         

  (1) AWS specification and classification designation (year of issue may be excluded best wire for welding aluminum)         

  (2) Supplier's name and trade designation         

  (3) Size and net weight         

  (4) Lot, control, or heat number        

1.  Welding fumes can be hazardous to your health. Work in a well-ventilated area or use a local exhaust (fume extraction) system to keep fumes away from your breathing zone .

2. Wear correct eye, ear, and body protection. Use welding goggles or a helmet with a shade 4-5 lens for gas welding , along with heat-resistant gloves and protective clothing . To avoid skin contact, follow standard precautions: wash thoroughly after handling, and do not allow contaminated work clothing to leave the worksite .

3.  Avoid overheating. Excessive heat will cause zinc to evaporate from the alloy, producing excessive white fumes and leading to weld defects like porosity and reduced joint strength . Use a neutral or slightly oxidizing flame and control the heat input carefully to minimize zinc loss. Also, note that this filler metal is not suitable for furnace brazing in a controlled atmosphere due to zinc volatilization issues .

AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire 10 famous brand are which factory?

1:sanzhong, 2:giant, 3:safra, 4:Hobart, 5:SAF, 6:ALCOTEC, 7:INDALCO, 8:HYUNDAI, 9:Oxford, 10:golden bridge

AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire supplier and factories locates in such countries like?

China,America,Brazil,England,Russia,Poland,India,Pakistan,NewZealand,Korea,Australia,Dubai,Turkey,Indonesia,UAE.

AWS A5.7 ERCuAl-A3 MIG Welding Wire vs ERCuNiAl?

ERCuAl-A3 and ERCuNiAl are both copper alloy MIG welding wires complying with AWS A5.7.

ERCuAl-A3 is nickel-free aluminum bronze with higher aluminum and iron content. It is mainly designed for wear-resistant hardfacing and repair of aluminum bronze castings, but not suitable for long-term seawater exposure.

ERCuNiAl, also called nickel aluminum bronze, contains 4.0~5.5% nickel. Nickel significantly improves resistance to seawater erosion, cavitation and chloride corrosion. It is the preferred filler metal for marine components such as propellers and seawater pumps. Both wires require pure argon shielding for MIG and TIG welding.

Note: AWS A5.7 only specifies chemical composition. Mechanical values are typical test results, not mandatory acceptance criteria.

How to choose a suitable AWS A5.7 Aluminum Bronze A3 (AWS ERCuAl-A3) MIG Welding Wire?

To achieve optimal results, you must ensure your welding setup meets the wire's requirements.

Welding Process: This wire is available for both MIG (GMAW) and TIG (GTAW) welding.

Shielding Gas: The standard recommendation is 100% Argon or a mixture of 75% Argon / 25% Helium.

Polarity: For MIG welding, use DCRP (Direct Current Reverse Polarity, Electrode Positive). For TIG, it's typically welded with DCSP (Direct Current Straight Polarity) or ACHF (Alternating Current High Frequency).

Wire Diameter: Common diameters are available, such as 0.035", 0.045", 1/16", and larger. Your choice should match your material thickness and the amperage/voltage settings on your machine. For example, 0.045" diameter wire is often recommended for MIG welding.

Preheating: Generally not required except when working with base metals that have very high copper content.