TOKO Welding Consumables Overview

TOKO AWS A5.4 E312-16 Welding Electrode

TOKO AWS A5.4 E312-16 is an austenitic stainless steel welding electrode. The "E312" indicates a high-alloy composition with approximately 29-30% chromium, 9-10% nickel, and small amounts of molybdenum, providing excellent corrosion resistance, high strength, and crack resistance. The "-16" suffix denotes a lime-titania coating, suitable for AC or DC+ polarity and all-position welding (flat, horizontal, vertical, overhead).
TOKO E312-16 Welding Rods

1. Key Properties:

  • High Crack Resistance: Ideal for contaminated or high-sulfur base metals.
  • Dissimilar Metal Welding: Effective for joining austenitic stainless steels (e.g., 304, 316) to carbon steels or low-alloy steels.
  • Ductility & Strength: Austenitic-ferritic microstructure resists thermal cracking and withstands high-stress environments.
  • Corrosion & Heat Resistance: Suitable for high-temperature applications (e.g., exhaust systems, furnaces).

2. Applications：

  • Dissimilar Metal Joining: Common in industries like chemical processing and power generation for welding stainless steel to carbon steel.
  • Maintenance & Repair: Versatile for field repairs, especially with unknown or mixed base metals.
  • High-Temperature Environments: Used in exhaust systems, boilers, and heat exchangers.
  • Heavy Industry: Mining, construction, and heavy machinery where welds endure significant stress.
  • Cladding/Overlay: Provides corrosion-resistant surfaces on carbon steel components.

3. Welding Parameters:

  • Current: AC or DC+ (recommended settings vary by thickness).
  • Precautions: Minimal preheating required; avoid excessive heat input to prevent distortion.

4. Storage & Handling

  • Storage: Keep in dry conditions to prevent moisture absorption (re-bake if exposed to humidity).
  • Preheat/Post-Weld Heat Treatment: Generally not required for thin sections; follow specific guidelines for thick materials.
TOKO AWS A5.4 E312-16 welding electrode is a versatile, all-position stainless steel electrode featuring a lime-titania flux coating. Designed for AC/DC welding, it offers exceptional arc stability, easy slag removal, and strong crack resistance, making it ideal for challenging applications.

Technical Documentation

  • 📥 Download Material MTC (PDF)