STARBLAZE PRIME 347 HF
AWS A5.4: E 347-16 | DIN EN 1600: E 19 9 Nb R 12 | DIN EN ISO 3581-A: E 19 9 Nb R 12 | Werkstoff Nr. 1.4550
High Ferrite Deposit, Superior Crack Resistance, Stabilized Stainless Steel Welding
A rutile-basic coated austenitic stabilized stainless steel electrode with approximately 10–12% ferrite and a low moisture absorption coating (LMA type). StarBlaze PRIME 347 HF provides enhanced resistance to hot cracking while delivering soft fusion characteristics, spatter-free welding, very easy slag removal, exceptional weld bead appearance, and easy restriking. Designed for welding stabilized and unstabilized austenitic Cr-Ni stainless steels operating at temperatures up to 400°C, it is also suitable for corrosion-resistant chromium steels and similar alloy cladding applications. Supplied in vacuum-packed packaging for optimum moisture protection and consistent welding performance.
Available Packs
Dimensions: 2.50 mm x 350 mm, 3.15 mm x 350 mm, 4.00 mm x 350 mm, 5.00 mm x 450 mm
Pack Sizes: 2.5 Kg Vacuum Pack, 4 Kg Vacuum Pack, 5 Kg Vacuum Pack
Master Box: 20 Kg, 30 Kg, 40 Kg, Customisable packaging available on request
Approx. 10–12% ferrite weld deposit
Enhanced resistance to hot cracking
Stabilized austenitic stainless steel weld metal
Low moisture absorption coating (LMA type)
Excellent corrosion resistance
Suitable for service temperatures up to 400°C
Soft fusion characteristics
Spatter-free arc performance
Very easy slag removal
Exceptional weld bead appearance
Easy striking and restriking
Suitable for AC and DC+ polarity
Chemical Processing Plants
Petrochemical Industry
Power Generation Plants
Food Processing Equipment Manufacturing
Pharmaceutical Industry
Pressure Vessel Manufacturing
Heat Exchanger Fabrication
Process Equipment Manufacturing
Manual Metal Arc Welding (MMA/SMAW) of stabilized stainless steels
Fabrication of corrosion-resistant vessels and tanks
Pressure vessel welding
Heat exchanger fabrication
Process piping construction
Corrosion-resistant cladding applications
Maintenance and repair of stainless steel equipment
Designed for welding stabilized and unstabilized austenitic Cr-Ni stainless steels
Suitable for UNS S30400 (304)
Suitable for UNS S30403 (304L)
Suitable for UNS S32100 (321)
Suitable for UNS S34700 (347)
Compatible with Material No. 1.4301, 1.4306, 1.4541 and 1.4550
Higher ferrite content improves resistance to weld cracking
Recommended for service temperatures up to 400°C
Suitable for corrosion-resistant chromium steels
Suitable for alloyed cladding applications
Maintain interpass temperature below 200°C
Keep electrodes dry and avoid condensation
Re-drying generally not required
If necessary, re-dry at 300–350°C for 1 hour
Supplied in vacuum-packed packaging
Product Details
Typical Chemical Composition (%)
| C | Si | Mn | Cr | Ni | S | P | Nb |
| 0.04 | 0.80 | 1.00 | 19.50 | 9.50 | 0.015 | 0.020 | 0.45 |
Typical Mechanical Properties (All Weld Metal)
| Tensile Strength Rm (N/mm²) | Elongation A5 (%) | Charpy Impact Value (ISO-V J RT) |
| 590 | 40 | 80 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 50-80 |
| 3.15 | 70-110 |
| 4.00 | 100-150 |
| 5.00 | 140-190 |
