---
title: "Structural Steel Welding Electrode"
industry: "Manufacture of Structural Metal Products"
verification_protocol:
  urn: "URN:CNFX:ME:STRUCTURAL_STEEL_WELDING_ELECTRODE"
  data_integrity_hash: "c37396325a6ae8a317cafec8a0d57d91"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:STRUCTURAL_STEEL_WELDING_ELECTRODE"
  data_source_uri: "https://cnfx.com/llms/industry/manufacture-structural-metal-products/product/structural-steel-welding-electrode.md"
  official_resource_url: "https://cnfx.com/industry/manufacture-structural-metal-products/product/structural-steel-welding-electrode"
  is_verified_logic: true
attributes:
  diameter:
    status: "config-dependent"
    typical_range: "1.2-4.8 mm electrode diameter, 80-350 A welding current, 18-32 V arc voltage"
    unit: "mm"
  tensile_strength:
    status: "config-dependent"
    typical_range: "1.2-4.8 mm electrode diameter, 80-350 A welding current, 18-32 V arc voltage"
    unit: "MPa"
engineering_limits:
  max_safe_operating_point:
    value: 1500
    unit: "°C"
    consequence: "Flux vaporization at 1500°C disrupts shielding gas envelope, low voltage prevents stable electron emission from cathode spot, rapid cooling forms brittle martensitic microstructure exceeding 50% volume fraction"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Moisture absorption exceeding 0.4% by weight in electrode coating"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetic vacuum packaging with desiccant, storage at ≤40% relative humidity, 350°C/1h rebake protocol before use"
  - node_2:
      trigger: "Arc length deviation beyond ±1.5 mm from optimal 3 mm"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Auto-voltage sensing with 100 Hz feedback loop, contact tip-to-work distance laser measurement, digital welding parameter preset locking"
bom_nodes:
  core-wire:
    type: "component"
    urn: "URN:CNFX:ME:CORE_WIRE"
    interface_type: "physical-logic-coupled"
  flux-coating:
    type: "component"
    urn: "URN:CNFX:ME:FLUX_COATING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 2560:2020 - WELDING CONSUMABLES - COVERED ELECTRODES FOR MANUAL METAL ARC WELDING OF NON-ALLOY AND FINE GRAIN STEELS - CLASSIFICATION"
    scope: "Verified Engineering Specification"
  - standard: "AWS A5.1/A5.1M:2021 - SPECIFICATION FOR CARBON STEEL ELECTRODES FOR SHIELDED METAL ARC WELDING"
    scope: "Verified Engineering Specification"
  - standard: "EN ISO 14341:2020 - WELDING CONSUMABLES - WIRE ELECTRODES AND WELD DEPOSITS FOR GAS SHIELDED METAL ARC WELDING OF NON-ALLOY AND FINE GRAIN STEELS - CLASSIFICATION"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/manufacture-structural-metal-products/product/structural-steel-welding-electrode.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "3d8eaf4dede98b1aa0dfea3f4aaf177c643ba80ca694bfafcb2bcb9c09b50ba9"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Structural Steel Welding Electrode

## 1. Technical Definition
Consumable filler metal rod for arc welding structural steel components

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **1.2-4.8 mm electrode diameter, 80-350 A welding current, 18-32 V arc voltage**. Failure boundary: **Electrode core temperature exceeding 1500°C causes flux decomposition, arc instability occurs below 18 V, tensile strength drops below 490 MPa when cooling rate exceeds 30°C/s**, Mechanism: **Flux vaporization at 1500°C disrupts shielding gas envelope, low voltage prevents stable electron emission from cathode spot, rapid cooling forms brittle martensitic microstructure exceeding 50% volume fraction**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Moisture absorption exceeding 0.4% by weight in electrode coating | 8 | Hydrogen-induced cracking in weld metal heat-affected zone | Hermetic vacuum packaging with desiccant, storage at ≤40% relative humidity, 350°C/1h rebake protocol before use |
| Arc length deviation beyond ±1.5 mm from optimal 3 mm | 8 | Incomplete fusion at joint root with ≤85% penetration depth | Auto-voltage sensing with 100 Hz feedback loop, contact tip-to-work distance laser measurement, digital welding parameter preset locking |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| diameter | Config-dependent | mm | Verified |
| tensile_strength | Config-dependent | MPa | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Arc Welding Machine**, **Welding Power Source**, **Welding Fume Extractor**  
**Downstream Applications**: Steel Bridges, Building Frames, Industrial Platforms  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What is the typical coating factor for this structural steel welding electrode?
**A**: The coating factor varies by diameter but typically ranges from 1.4 to 1.6, ensuring proper arc stability and weld metal protection during structural welding applications.

### Q: What are the key mechanical properties of welds made with this electrode?
**A**: Welds exhibit excellent mechanical properties including tensile strength of 490-620 MPa, yield strength of 400 MPa minimum, elongation of 22% minimum, and impact toughness of 47J at -20°C, suitable for structural applications.

### Q: What materials are used in the construction of this welding electrode?
**A**: This electrode features a low-carbon steel core wire with a calcium carbonate-based flux coating containing ferroalloy powder additives, designed specifically for welding structural steel components in manufacturing.

## 6. Manufacturing Compliance
- ISO 2560:2020 - WELDING CONSUMABLES - COVERED ELECTRODES FOR MANUAL METAL ARC WELDING OF NON-ALLOY AND FINE GRAIN STEELS - CLASSIFICATION
- AWS A5.1/A5.1M:2021 - SPECIFICATION FOR CARBON STEEL ELECTRODES FOR SHIELDED METAL ARC WELDING
- EN ISO 14341:2020 - WELDING CONSUMABLES - WIRE ELECTRODES AND WELD DEPOSITS FOR GAS SHIELDED METAL ARC WELDING OF NON-ALLOY AND FINE GRAIN STEELS - CLASSIFICATION

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Structural Steel Welding Electrode](https://cnfx.com/industry/manufacture-structural-metal-products/product/structural-steel-welding-electrode)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **2** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: STRUCTURAL_STEEL_WELDING_ELECTRODE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: e63005c3
