EutecTrode EC 33300 Welding Electrodes

When you need a high-performance coated electrode for demanding heat-resisting and corrosion-resistant welds, Metals And Welding Specialities is proud to offer the EutecTrode EC 33300 coated electrode. This electrode is engineered for reliability in high-temperature service, where scale resistance, oxidation resistance, and weld integrity are critical. The EutecTrode EC 33300 is a rutile-basic coated stick electrode that delivers a fully austenitic weld deposit, combining superior corrosion resistance with good weldability in complex conditions. The weld metal produced resists oxidation and scaling at temperatures up to 1,200 °C, and is capable of operating in reducing, sulfurous atmospheres up to about 650 °C. (Castolin’s datasheet describes this performance envelope.)

From a materials spec standpoint, the EC 33300 electrode corresponds to the AWS classification E310-16 (as given in the manufacturer’s technical data). It is also referenced under EN ISO 3581-A as E 25 20 R 12 in European standards. While the UNS number is not publicly stated in many data sheets, a logical association is to UNS S33300 given the matching “33300” designation frequently correlated with stainless grade 333 (although confirm this in your purchasing spec). (Note: Grade 333 is better known in bar/rod form as UNS S33300 in stainless alloys references.)

In practical application, EutecTrode EC 33300 is suited for joining similar or dissimilar metals, especially in high temperature or corrosive environments. It is often chosen to join austenitic CrNi steels such as 1.4837, 1.4840, and 1.4841 grades, and to bridge dissimilar welds between low-alloy steels (such as P235 GH, P265 GH) and high alloy stainless steels. The electrode exhibits stable arc characteristics under both AC and DC, and is usable in most welding positions (except planar overhead in some cases), making it versatile for maintenance and fabrication settings.

To achieve optimal performance, the base metal and weld joint area must be clean and free of scale or contaminants. Preheat or re-drying at about 350 °C for one hour is recommended to remove moisture. Interpass temperatures should be limited, typically below ~150 °C, when welding similar alloys to avoid hot cracking. Use an austenitic wire brush to clean slag between passes. Because the electrode is coated, slag is self-forming and protective, and must be chipped away cleanly before continuing. The fully austenitic weld metal reduces the risk of embrittlement or sigma phase formation under many service conditions, preserving ductility and corrosion resistance over long service life.

When you source EutecTrode EC 33300 from Metals And Welding Specialities, you benefit from quality assurance in handling and supply chain integrity. We ensure that the coated electrodes are stored in low-moisture, sealed packaging and delivered ready for use. Our technical support can assist you with amperage selection, weld parameters, and qualification testing to meet your project standards. Whether your application involves high temperature oxidation resistance, furnace components, exhaust systems, or critical process equipment, the EutecTrode EC 33300 offers a compelling solution balancing weldability, heat resistance, and corrosion control.

• Specification EutecTrode EC 33300 Welding Electrodes

  Specification	Detail
  Product name	EutecTrode EC 33300
  Type	Rutile-basic coated stick electrode
  Weld metal	Fully austenitic, corrosion-resistant
  Temperature resistance	Scale resistant up to 1,200 °C; resistant in reducing, sulphurous atmosphere up to 650 °C
  Standards / Classification	EN ISO 3581-A: E 25 20 R 12; AWS A5.4: E310-16
  Applications	Joining similar alloyed heat-resisting CrNi steels and dissimilar joints between unalloyed/low-alloy steels and high-alloy austenitic CrNi steels
  Welding positions	All except PG (f)
  Current type / Polarity	DC+ (straight) or AC
  Open-circuit voltage	≥ 70 V
  Code	100305
  Category	Highly alloyed
  Number in package (typical)	5.0 kg

• EutecTrode EC 33300 Welding Electrodes Parameters

  Parameter	Value
  Product name	EutecTrode EC 33300
  Coating	Rutile-basic coated stick electrode
  Weld metal	Fully austenitic, corrosion-resistant
  Scale resistance	Up to 1,200 °C
  Resistance in reducing/sulphurous atmosphere	Up to 650 °C
  EN ISO 3581-A	E 25 20 R 12
  AWS classification	A5.4: E310-16
  Welding positions	All except PG (f)
  Current type	DC+ (= +) or AC (~)
  Open-circuit voltage	≥ 70 V
  Interpass temperature (when welding similar alloys)	Limit to 150 °C
  Typical applications	Joining heat-resisting CrNi steels and dissimilar joints to unalloyed/low-alloy steels
  Product code	100305
  Number in package	5.0 kg

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