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OEM/ODM ER5556 Aluminum Welding Wire Manufacturers

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ER5556 Aluminum Welding Wire
  • ER5556 Aluminum Welding Wire
  • ER5556 Aluminum Welding Wire
  • ER5556 Aluminum Welding Wire
  • ER5556 Aluminum Welding Wire
Aluminum Welding Wire

ER5556 Aluminum Welding Wire

Comparing with 5356, 5556 has more Magnesium and Manganese, which has higher strength, better tenacity, higher corrosion resistance and better welding performance, recommended for welding alloy of 5000 series, 6000 series, 7000 series, such as 5050, 5052, 5083, 5456, 6005A, 6061,6063,6082,7005 etc..

E-mail: rich@chinayinyu.com
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ER5556
Al-Mg5Mn0.8
Aluminum Welding Wire
5xxx Series · High Strength Structural Alloy
AWS A5.10
ISO 18273
ABS
4.5-5.5%Magnesium
0.5-1.0%Manganese
340 MPaTensile Strength
16-20%Elongation
ER5556 Aluminum Welding Wire
Product Overview
ER5556 is a magnesium-manganese alloyed filler metal containing 4.5-5.5% magnesium and 0.5-1.0% manganese. This composition provides higher strength than ER5356 while maintaining excellent formability and corrosion resistance. The manganese addition refines grain structure and improves weld metal toughness. The wire is manufactured with shaved surface finish to eliminate oxides and residual lubricants. ER5556 is specifically formulated for welding 5xxx series aluminum alloys where higher mechanical properties are required, particularly for structural applications in marine, transportation, and pressure vessel industries.
Core Advantages
1
High Strength
Manganese addition provides solid solution strengthening, achieving as-welded tensile strength of 340-370 MPa without post-weld heat treatment.
2
Grain Refinement
Controlled manganese content promotes fine equiaxed grain structure in weld deposit, improving fatigue resistance and reducing solidification cracking.
3
Corrosion Resistance
Magnesium-manganese combination provides passive oxide stability in seawater and industrial chemical environments, matching 5xxx series base alloys.
4
Weld Quality
Shaved surface finish with hydrogen content below 0.12ml/100g produces radiographic quality welds with minimal porosity.
Product Specifications
Wire Diameters0.8mm / 1.0mm / 1.2mm / 1.6mm / 2.4mm
PackagingD200 (2kg) · D300 (7kg) · K355 (50kg) · Pay-off drum (180kg)
Surface ConditionShaved finish · Chemically degreased · Oxide depth below 30Å
Shielding Gas100% Argon (99.996%) · Ar-He 75/25 for heavy sections
Melting Range570°C - 635°C (1060°F - 1175°F)
Density2.66 g/cm³
Chemical Composition Limits
Magnesium (Mg)4.5 - 5.5%
Manganese (Mn)0.5 - 1.0%
Chromium (Cr)0.05 - 0.20%
Titanium (Ti)0.05 - 0.15%
Iron (Fe)0.40% max
Aluminum (Al)Balance
Total other elements below 0.15%
Application Scenarios
Marine StructuresShip hulls, offshore platforms, deck equipment, marine risers

Pressure VesselsWelded tanks, chemical containers, cryogenic storage vessels

TransportationRail cars, truck trailers, dump bodies, fuel tankers

Structural FabricationCrane booms, bridges, scaffolding, aluminum structural components
Superior Weld Quality
ER5556 delivers consistent arc stability and excellent bead appearance across a wide range of welding parameters.
Welding Parameters
Voltage: 21-25 V
Current: 130-190 A
Wire Feed Speed: 4.5-7.5 m/min
Argon Flow: 18-24 L/min
Stickout: 12-18 mm
Interpass Temp: Below 120°C
Frequently Asked Questions
What base materials can ER5556 weld?
ER5556 is designed for welding 5xxx series aluminum alloys including 5052, 5056, 5083, 5086, 5183, and 5556. It provides matching mechanical properties and corrosion resistance for these alloys.
Does ER5556 require post-weld heat treatment?
No, ER5556 achieves full mechanical properties in the as-welded condition without post-weld heat treatment. The manganese addition provides solid solution strengthening directly after welding.
What shielding gas should be used with ER5556?
100% Argon (99.996% purity) is recommended. For sections thicker than 12mm, Argon-Helium 75/25 mixture can improve penetration and wetting action.
What causes porosity when welding with ER5556?
Porosity is typically caused by moisture on the wire surface, contaminated base material, or inadequate shielding gas coverage. Ensure humidity below 55%, clean base metal thoroughly, and verify gas flow rate.
Storage Requirements
Store spools in original vacuum-sealed packaging at 10-35°C with relative humidity below 55%. Opened spools must be used within 96 hours. For extended storage, place in heated cabinet at 35-45°C. Prevent exposure to oil mist, grinding dust, or chemical vapors.
Handling Precautions
Use clean, powder-free gloves when handling wire. Prevent contact with oil, grease, or coolant mist. Do not store near carbon steel processing areas. Return protective cover to spool after each use. Replace Teflon liner every 150kg of wire consumption.
Technical data represents typical values obtained from controlled laboratory testing. Final mechanical properties depend on welding procedure, base material condition, joint geometry, and operator skill. Procedure qualification testing recommended for critical applications.

  • GB/10858

    S AL 5556

    DIN EN ISO 18273

    S AL 5556(AlMg3Mn(A))

    AWS/ASME A 5.10

    ER 5556, R5556

    CHEMICAL COMPOSITION（wt）/%

    Si

    Fe

    Cu

    Mn

    Mg

    Cr

    Zn

    Ti

    Be

    other

    Al

    single

    total

    ≤0.25

    ≤0.4

    ≤0.1

    0.05~0.1

    4.7~5.5

    0.05~0.20

    ≤0.25

    0.05~0.20

    ≤0.0003

    ≤0.05

    ≤0.15

    Rem.

    TYPICAL CHARACTERISTICS

    melting range

    1055 - 1175°F

    conductivity

    16-19Ώ.m/mm2

    density

    2.66g/mm3

    corrosion resistance

    A(Gen) A(SCC)

    coefficient of thermal expansion（20℃~300℃）

    23.7×10-6/K

    Color after electrode oxidization

     White

    The mechanical properties of typical welded joint

    Starting Sheet

    Starting Sheet Performance

    Joint Performance

    Rm(MPa)

    RP0.2 (MPa)

    A/%

    Rm (MPa)

    RP0.2 (MPa)

    A/%

    5456-H112

    315

    165

    22

    310

    160

    14

    Size and Packet 

    Class

     Typical Diameter/mm

    Reference Packet/Kg

    MIG

    0.8、0.9、1.0、1.2、1.6、2.4

    0.5、2、5、6、7

    TIG

    1.6、2.0、2.4、3.0、3.2、4.0、5.0/1000

    5、10

    COIL

    2.4、3.0、3.2、4.0

    8-15

    DRUM

    0.8、0.9、1.0、1.2、1.6

    40、80

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ER5556 Aluminum Welding Wire

Coming From China，
Marketing To The World.

Hangzhou Kunli welding materials Co., Ltd. is located in the industrial zone of Puyang Town, Xiaoshan District, Hangzhou, Zhejiang Province. It is a high-technology and high-performance China Aluminum Welding Wire Manufacturers and wholesale ER5556 Aluminum Welding Wire factory. The company has more than 20 years of aluminum alloy wire production experience, with international advanced aluminum alloy welding wire manufacturing equipment, complete testing equipment, stable production process and strict quality control system. The high-performance OEM/ODM ER5556 Aluminum Welding Wire produced by the company has successfully passed a number of international authoritative certification, such as DB, CE, ABS, DNV, CCS, etc. We have more than 200MT production capacity per month and 50% was exported to over 30 countries such as USA, Mexico, Southeast Asia, Japan, Korea, Australia, New Zealand and etc.

  • 30+

    USED IN HEAVY INDUSTRY TECHNOLOGY SECTOR

  • 35

    YEARS OF RESEARCH AND DEVELOPMENT EXPERIENCE

  • 200+

    COOPERATIVE LARGE-SCALE R & D INSTITUTIONS

  • 20+

    GLOBAL TRADE COUNTRIES AND REGIONS

Coming From China,
Marketing To The World.

More than 90% of our field operators have professional and technical education background, and have many years of experience in equipment processing and assembly. It is precisely because of this united, dedicated, pioneering, skilled and experienced team that the company's technology and products can be continuously updated and improved.

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Industry Information Extension

How to Choose Between ER5356 vs. ER5556 Welding Wire for High-Strength Aluminum Projects

When working on high-strength aluminum projects, selecting the right aluminum welding wire is crucial for achieving strong, crack-free welds. Two of the most commonly used wires are ER5356 and ER5556, each with distinct properties that make them suitable for different applications.

Key Differences Between ER5356 and ER5556 Aluminum Welding Wire

1. Chemical Composition & Mechanical Properties
The primary difference between ER5356 and ER5556 welding wire lies in their alloy composition:

Property ER5356 ER5556
Aluminum (Al) ≈94.5% ≈93.5%
Magnesium (Mg) 4.5-5.5% 4.7-5.5%
Manganese (Mn) 0.05-0.20% 0.5-1.0%
Tensile Strength ≈38,000 psi (262 MPa) ≈42,000 psi (290 MPa)
Yield Strength ≈19,000 psi (131 MPa) ≈24,000 psi (165 MPa)

The higher manganese content in ER5556 welding wire improves its strength and workability, making it ideal for structural aluminum welding where higher load-bearing capacity is required.

2. Best Applications for Each Wire
ER5356 is widely used for welding 5xxx series aluminum alloys, particularly in marine applications, automotive panels, and general fabrication where moderate strength and good corrosion resistance are needed.
ER5556, with its superior strength, is preferred for heavy-duty aluminum welding, such as military vehicles, aerospace components, and offshore structures where fatigue resistance is critical.

3. Weldability & Crack Resistance
While both wires offer good aluminum MIG welding performance, ER5556 filler wire is less prone to hot cracking due to its refined grain structure. This makes it a better choice for thick aluminum plate welding or projects requiring multiple passes.

4. Corrosion Resistance in Saltwater Environments
For marine-grade aluminum welding, ER5356 is often chosen due to its excellent saltwater corrosion resistance. However, ER5556 performs well in harsh environments where higher mechanical stress is involved, such as shipbuilding and offshore platforms.

Which Wire Should You Choose?

For high-strength, structural welds → ER5556 aluminum welding wire (better for military, aerospace, and load-bearing structures).
For general fabrication and marine use → ER5356 welding wire (more cost-effective and easier to weld).