AKD948 Graphite-Coated Cast Iron Surfacing Electrode for High Wear Resistance.
A high-carbon, high-chromium cast iron surfacing electrode with stable arc and minimal slag, designed for components exposed to severe abrasive wear and impact loading.
Product Overview
AKD948 is a graphite-type coated high-carbon, high-chromium cast iron surfacing electrode used for rebuilding and protecting surfaces subject to high abrasive wear and impact. The electrode coating provides excellent electrical conductivity and maintains a stable arc with minimal spatter during welding.
The coating contains very little mineral slag-forming agent, resulting in negligible slag formation. This eliminates the need for slag removal between passes, improving welding efficiency. The deposited metal efficiency reaches up to 85%.
The surfacing metal produced has high hardness, excellent resistance to wear and cavitation, making it suitable for critical wear-prone components in demanding industrial applications.
Application: Used for surfacing welding to bear a certain impact load and require high abrasive wear resistance, such as wear-resistant plates and wear-resistant rin gs (commonly known as eye plates) for concrete pump S pipe valves, hammer mills Surfacing welding of hammer heads, material distribution discs, sintering crus-her gear rollers, etc.
Key Benefits
Stable Arc with Minimal Spatter.
The graphite coating ensures consistent arc performance and low spatter, contributing to cleaner welds and reduced post-weld cleanup.
No Slag Removal Required.
Due to the minimal slag formation, there is no need to remove slag between passes, which increases welding speed and reduces labor.
High Deposition Efficiency
The electrode achieves a deposited metal efficiency of up to 85%, reducing material waste and improving cost efficiency.
High Hardness and Wear Resistance.
The surfacing metal delivers high hardness and excellent resistance to abrasive wear and cavitation, extending component service life.
Where It Is Used
- Surfacing of wear-resistant plates and rings (eye plates) for concrete pump S pipes and valves.
- Rebuilding of hammer heads, material distribution discs, and sintering crusher gear rollers.
- Welding repair and reinforcement of components in high-impact, high-abrasion environments.
Who It Is For
- Welding contractors specializing in wear-resistant surfacing for mining and construction equipment.
- Maintenance teams responsible for repairing high-wear components in industrial machinery.
- Fabricators rebuilding parts for concrete pumps, crushers, and material handling systems.
Problems It Solves
- Difficulty in achieving consistent wear resistance on high-impact components due to poor alloy transfer or unstable arc.
- Excessive time spent on slag removal during multi-pass surfacing operations.
- Low deposition efficiency to higher material consumption and increased rework.
Specifications
Published by the factory for AKD948. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Element | Content |
|---|---|
| C | 4.0-5.0 |
| Cr | 25.0-28.0 |
| Other | 8.0-13.5 |
Mechanical property data for this grade is not published on the factory datasheet. Ask our technical team for the test record before you qualify it.
| Diameter | Current range |
|---|---|
| 3.2mm | |
| 350mm | 90-120A |
| 4.0mm | |
| 400mm | 150-180A |
| 5.0mm |
Technical Features
- Graphite-type coating with high electrical conductivity for stable arc.
- Minimal slag formation—no need for slag removal between passes.
- Deposited metal efficiency up to 85%
- Chemical composition: Carbon 4.0-5.0%, Chromium 25.0-28.0%, Other elements 8.0-13.5%
- Available in 3.2 mm, 4.0 mm, and 5.0 mm diameters with specified current ranges.
Use Guide
- Bake the electrodes at 250°C for 1 hour before use to ensure dryness and optimal performance.
- Clean rust, oil, and other contaminants from the workpiece surface prior to welding.
- Ensure the electrode coating is fully melted during welding to achieve effective alloy transfer into the weld metal.
- Use the recommended current ranges: 90-120 A for 3.2 mm, 150-180 A for 4.0 mm, and 180-210 A for 5.0 mm.
How It Compares
AKD948 is a graphite-coated high-carbon, high-chromium cast iron surfacing electrode designed for high wear resistance and minimal slag. Unlike basic or rutile-coated electrodes that produce significant slag and require removal, AKD948’s coating minimizes slag formation. It is not intended for structural welding but for surfacing applications where hardness and abrasion resistance are critical. It differs from standard mild steel electrodes in both composition and purpose.
Related Grades
Other welding electrodes in the same family.
AKD948 Questions
What are the recommended welding parameters for each diameter?
What is the chemical composition of the deposited metal?
Is pre-baking required before welding?
Can this electrode be used on components with high impact loading?
What packing is AKD948 supplied in?
Can we test AKD948 before placing a production order?
Request a Quotation for AKD948
Send the diameter, the quantity and the destination port. Our technical team replies with packing, pricing and the data you need to qualify the grade.