AKD437 Low Hydrogen Surfacing Electrode for High-Temperature Wear Resistance.
A low hydrogen coated surfacing electrode designed for high hardness and wear resistance in elevated temperature environments, particularly in metallurgical industrial systems.
Product Overview
AKD437 is a low hydrogen coated surfacing electrode used for depositing hard, wear-resistant layers on surfaces exposed to high temperatures and abrasive conditions. It is primarily applied in metallurgical industrial systems where surface integrity under thermal and mechanical stress is critical.
The electrode's chemical composition includes 0.8% carbon, 15.0% chromium, 15.0% nickel, 4.0% vanadium, and controlled levels of phosphorus and sulfur at 0.030% each, contributing to high hardness and resistance to thermal degradation during service.
Application: Used for surfacing welding that requires high hardness and high wear resistance under high temperature conditions. Mainly used in metallurgical industrial systems.
Key Benefits
High Hardness and Wear Resistance.
The high carbon and alloy content in AKD437 delivers a hard, wear-resistant surface layer suitable for components subjected to abrasive and high-temperature operation.
Low Hydrogen Coating
The low hydrogen coating minimizes the risk of hydrogen-induced cracking in the deposited weld metal, improving reliability in critical applications.
Suitable for High-Temperature Service.
The combination of chromium, nickel, and vanadium ensures the surfacing layer maintains structural integrity and resistance to degradation at elevated temperatures.
Controlled Chemical Composition
Precise levels of carbon, chromium, nickel, vanadium, phosphorus, and sulfur are maintained to achieve consistent mechanical performance and weld quality.
Where It Is Used
- Surfacing of components in metallurgical industrial systems exposed to high temperature and wear.
- Repair and reinforcement of wear-prone surfaces in high-temperature environments.
- Welding applications requiring high hardness and resistance to thermal fatigue.
Who It Is For
- Welding consumable distributors supplying surfacing electrodes for industrial applications.
- Fabricators and maintenance teams working on metallurgical equipment.
- Engineers specifying surfacing materials for high-temperature, high-wear components.
Problems It Solves
- Achieving high hardness and wear resistance in surfacing layers under high-temperature operating conditions.
- Reducing the risk of hydrogen cracking in deposited metal through low hydrogen coating.
- Providing a consistent, chemically controlled surfacing electrode for critical industrial repairs.
Specifications
Published by the factory for AKD437. Values not shown are not published on the datasheet and are marked as such rather than estimated.
| Element | Content |
|---|---|
| C | 0.8 |
| P | 0.030 |
| S | 0.030 |
| V | 4.0 |
| Cr | 15.0 |
| Ni | 15.0 |
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
- Low hydrogen coating for reduced cracking risk.
- Chemical composition: 0.8% C, 15.0% Cr, 15.0% Ni, 4.0% V, 0.030% P, 0.030% S.
- Recommended welding parameters: 3.2 mm (90-120 A), 4.0 mm (150-180 A), 5.0 mm (180-210 A)
- Electrode length: 350 mm for 3.2 mm, 400 mm for 4.0 mm and 5.0 mm.
- Pre-weld baking required at 300-350°C for 1 hour.
Use Guide
- Bake the electrode at 300-350°C for 1 hour before use to maintain low hydrogen content.
- Remove rust, oil, moisture, and other contaminants from the weldment surface prior to welding.
- 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.
- Maintain proper electrode length and arc length during welding to ensure consistent deposition and quality.
How It Compares
AKD437 is a low hydrogen surfacing electrode with high hardness and wear resistance, suitable for high-temperature applications. It differs from standard mild steel electrodes by its alloy content and intended use in surfacing rather than structural joining. It is not intended for general-purpose welding but for specialized wear protection in demanding environments.
Related Grades
Other welding electrodes in the same family.
AKD437 Questions
What is the recommended baking temperature and time for AKD437?
What are the current ranges for different diameters?
What is the chemical composition of AKD437?
Can I get technical data and packing details before ordering?
What packing is AKD437 supplied in?
Can we test AKD437 before placing a production order?
Request a Quotation for AKD437
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