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  • AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm
  • AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm
  • AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm
  • AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm
  • AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm
  • AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm
AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm

AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm

  • 500 - 1499 Kilograms
    $4
  • 1500 - 2999 Kilograms
    $3.50
  • 3000 - 4999 Kilograms
    $3.30
  • >= 5000 Kilograms
    $3.10

Customization:

Customized logo（Min.Order: 1000 pieces）
Customized packaging（Min.Order: 1000 pieces）
Graphic customization（Min.Order: 1000 pieces）
View product details

AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Hardfacing Welding: Designed to apply wear-resistant layers on metal surfaces, ideal for repairing or reinforcing machinery parts exposed to abrasion, impact, or extreme conditions.
  • Multi-Diameter Compatibility: Available in 3.2mm, 4.0mm, and 5.0mm diameters to suit diverse welding requirements, ensuring precise application in varying project scales.

Key features

  • 1. Material Technology

    • With low hydrogen coating, reduce crack risk compared to standard electrodes*

  • 2. Interactive Design

    • With dual AC/DC compatibility, operate in both workshop and field settings*

  • 3. Performance Parameters

    • With a broad current range (90–250A), handle diverse material thicknesses efficiently*

  • 4. Scenario Solutions

    • Designed for industrial hardfacing, ensuring durability in high-wear environments

  • 5. Certification Standards

    • With AWS EFeMn-A certification, meet industry standards for quality and safety

Product details

AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes 3.15mm

The AWS EFeMn-A D256 Surfacing Duratrode Welding Electrodes are engineered for high-performance hardfacing applications. With diameters of 3.2mm, 4.0mm, and 5.0mm, these low-hydrogen electrodes deliver exceptional wear resistance and durability. Designed for both AC and DC currents (90A–250A), they are ideal for industrial maintenance, machinery repair, and heavy-duty equipment reinforcement.

Technical specifications

FeatureSpecificationApplication Scenario
Diameter3.2mm, 4.0mm, 5.0mmPrecision welding (3.2mm), general use (4.0mm), heavy-duty applications (5.0mm)
MaterialLow-hydrogen coatingCrack-resistant welds in high-stress environments
Operating CurrentDC/AC (90A–250A)Versatile compatibility with welding power sources
Bake Temperature300°C for 1 hourOptimal storage and pre-use conditioning
Hardfacing TypeSurfacing for wear resistanceReinforcing machinery parts, mining equipment, and construction tools

Customization guide

Adjustable parameters include diameter selection (3.2mm–5.0mm) to match project requirements, current settings for precise heat control, and bake time/temperature to ensure optimal electrode performance.

Get inspired

With the low-hydrogen coating of D256 electrodes, you can achieve seamless welds in corrosive or high-vibration environments. The 5.0mm diameter provides unmatched penetration for heavy machinery repairs, while the 3.2mm option ensures precision in intricate parts.

Choose your model

ParameterBase Model (3.2mm)Advanced Model (4.0mm)Pro Model (5.0mm)
Diameter3.2mm4.0mm5.0mm
Current Range90A–180A120A–220A150A–250A
Hardness (HRC)45–5050–5555–60*
Penetration Depth2.0mm2.5mm3.0mm

Supplier's note

  1. Technical Breakthroughs:

    • Low-hydrogen coating: Reduces porosity by 30% compared to standard electrodes, ensuring crack-free welds.
    • Precision diameters: Three size options (3.2mm–5.0mm) cater to niche applications, from delicate repairs to massive structural work.
    • Bake temperature standard: The 300°C protocol aligns with ISO 8516, ensuring consistent electrode performance.

  2. Version Selection Guidance:

    • Base Model (3.2mm): Ideal for small workshops or precision tasks like valve seat repairs. Its narrower diameter minimizes material waste.
    • Advanced Model (4.0mm): Best for medium-scale industries (e.g., automotive manufacturing) needing balance between speed and detail.
    • Pro Model (5.0mm): Designed for heavy industries (mining, construction) requiring deep penetration and high hardness (up to 60 HRC). Its 250A capacity outperforms industry benchmarks by 20%.

*Pro Model hardness exceeds ASTM A538 standards by 15%.

Frequently asked questions

  • Which AWS EFeMn-A D256 diameter suits heavy machinery repairs?

  • How to prepare HBNDNM D256 rods before welding?

  • Why choose low hydrogen welding rods for hardfacing?

  • Is AWS EFeMn-A D256 certified for industrial use?

  • Can D256 rods work with both AC and DC welders?

  • Where are HBNDNM D256 rods best used?

  • What current range works for D256 rods in DC mode?

  • How much does a package of HBNDNM D256 rods weigh?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Diameter OptionsPrecision repairs vs heavy machineryBase: 3.2mm (ISO 17655)
Industry Standard: 4.0mm
Advanced: 5.0mm (▲▲)
(5.0mm reduces deposition time by 30% vs Base)		Base: Precision in tight spaces; Advanced: 50% faster thick-section welding (▲▲)Base: Requires more passes; Advanced: Needs higher amperage (▲▲)
Material CompositionHigh-stress corrosion-prone environmentsAll Tiers: Low hydrogen (H8, AWS A5.18)
(Minimizes porosity and cracking)		▲▲▲ Reduces defects in critical applications (e.g., oil rig components)▲ Requires dry storage (desiccant packaging recommended)
Operating CurrentField work with AC/DC power sourcesAC/DC Compatible
(vs Industry Standard AC-only rods)		▲▲ Flexibility with portable generators or fixed DC systems▲ AC welding may require operator skill to stabilize arcs
Bake TemperatureIndustrial preheating setups300°C for 1h (ASTM A53/A53M-21)
(matches industry standard)		▲▲ Ensures optimal flux activation for strong bonds▲ Longer preheating time compared to lower-temperature rods
Welding Current RangeThin to thick material applications90–250A (ISO 17655)
(vs Industry Standard 100–200A)		▲▲ Adapts to 3mm sheet metal to 50mm thick plates▲ Higher-end current requires robust power supplies (e.g., 3-phase systems)
Packaging WeightLarge-scale projects vs small jobsBase: 3kgAdvanced: 5kg (▲)
(Industry Standard: 4kg)		▲▲ Advanced reduces logistics costs for bulk orders

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