STARBLAZE PRIME 2595
AWS A5.4: E2595-16 | DIN EN ISO 3581-A: E 25 9 4 N LR 12
Superior Pitting Resistance, Tungsten Alloyed, Maximum Corrosion Protection
A rutile type non-synthetic 25-10-4-N electrode specially designed for welding super duplex stainless steels and similar compositions. StarBlaze PRIME 2595 offers exceptional resistance to pitting and crevice corrosion with a PREN value of 52, making it suitable for the most demanding corrosive environments. The addition of tungsten enhances resistance to hot cracking, while the balanced weld metal chemistry delivers excellent weldability, a spatter-free arc, and smooth bead appearance. It is also suitable for welding standard duplex stainless steels as well as joining carbon and low alloy steels to duplex stainless steels. Weld metal exhibits ferrite levels between 45–60 FN and satisfies ASTM G-48 pitting corrosion resistance requirements at 25°C and 30°C.
Available Packs
Dimensions: 2.50 mm x 350 mm, 3.15 mm x 350 mm, 4.00 mm x 350 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
Excellent resistance to pitting corrosion
Outstanding resistance to crevice corrosion
PREN value of 52
Tungsten alloyed for enhanced hot crack resistance
Suitable for super duplex and duplex stainless steels
Can be used for joining carbon steel to duplex stainless steel
Spatter-free arc characteristics
Smooth weld bead appearance
Ferrite content between 45–60 FN
Excellent weldability
Vacuum packed for moisture protection
Suitable for AC and DC+ polarity
Offshore Oil & Gas Facilities
Chemical Processing Plants
Petrochemical Industry
Desalination Plants
Marine and Shipbuilding Industries
Pulp and Paper Industry
Power Generation Facilities
Process Equipment Manufacturing
Manual Metal Arc Welding (MMA/SMAW) of super duplex stainless steels
Welding of duplex stainless steel components
Dissimilar welding of carbon steel to duplex stainless steel
Fabrication of corrosion-resistant piping and vessels
Chemical process equipment fabrication
Marine and offshore structure welding
Designed for welding SAF 2507 super duplex stainless steel
Suitable for UNS S32550, S32750 and S32760 wrought grades
Compatible with UNS J93404, J93370, J93380 and CD4MCuN cast grades
Suitable for Material Numbers 1.4410, 1.4460, 1.4462 and 1.4463
Ferrite content maintained between 45–60 FN
Meets ASTM G-48 pitting corrosion resistance requirements at 25°C and 30°C
Tungsten addition improves resistance to hot cracking
Keep electrodes dry and avoid condensation
Re-dry at 300°C for 1 hour if necessary (maximum 3 cycles)
Vacuum packed for extended shelf life and moisture protection
Product Details
Typical Chemical Composition (%)
| C | Mn | Si | Cr | Ni | Mo | P | S | N | Cu | W |
| 0.03 | 1.20 | 0.80 | 25.40 | 9.50 | 4.00 | 0.015 | 0.010 | 0.24 | 1.00 | 0.60 |
Typical Mechanical Properties (All Weld Metal)
| Yield Strength Rp (N/mm²) | Tensile Strength Rm (N/mm²) | Elongation A5 (%) | Charpy Impact Value (ISO-V J RT) | Ferrite Number (FN) | PREN |
| ≥ 650 | ≥ 760 | ≥ 20 | ≥ 50 | 45 – 60 | 52 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 60-90 |
| 3.15 | 80-120 |
| 4.00 | 130-160 |
