STARBLAZE PRIME 9015 B23
AWS A5.5: E9015-B23 | EN ISO 3580-A: E Z Cr W V 2 1.5 B 4 2 H5
Creep Resistant Steel Welding, Low Hydrogen Performance, High Temperature Service up to 740°C
A basic coated medium alloyed low hydrogen electrode specially designed for welding high-temperature creep resistant steels and similar grades operating at temperatures up to +740°C. StarBlaze PRIME 9015-B23 provides excellent weldability, self-peeling slag, finely rippled weld beads, and radiographic quality weld deposits. The weld metal is alloyed with chromium, tungsten, vanadium, niobium, boron, and molybdenum to deliver superior creep strength and long-term high-temperature performance. It is ideally suited for fabrication and maintenance of reactors, boilers, tanks, and pipelines used in power generation and process industries.
Available Packs
Dimensions: 2.50 mm x 350 mm, 3.15 mm x 450 mm, 4.00 mm x 450 mm
Pack Sizes: 2.5 Kg Vacuum Pack, 4 Kg Box, 5 Kg Box
Master Box: 20 Kg, 30 Kg, 40 Kg, Customisable packaging available on request
Basic coated low hydrogen electrode
Designed for creep resistant steels
Suitable for operating temperatures up to 740°C
Excellent weldability
Self-peeling slag
Finely rippled weld bead appearance
Radiographic quality weld deposits
Superior creep strength
Low diffusible hydrogen level (3 ml/100g)
Low moisture content coating
Excellent high-temperature mechanical properties
Suitable for DC+ polarity
Thermal Power Plants
Boiler Manufacturing
Pressure Vessel Fabrication
Petrochemical Industry
Refinery Projects
Process Plant Construction
Pipeline Manufacturing
Heavy Engineering Industries
Manual Metal Arc Welding (MMA/SMAW)
Creep resistant steel welding
Boiler fabrication and repair
Pressure vessel welding
High temperature piping fabrication
Reactor construction
Pipeline fabrication and maintenance
Designed for high-temperature creep resistant steels
Suitable for HCM2S steels
Suitable for ASTM A213 Grade T23
Suitable for ASTM A335 Grade P23
Suitable for EN 10216-2 7CrWVMoNb9-6 steels
Excellent choice for long-term elevated temperature service
Preheating temperature: 200–220°C
Interpass temperature: 200–250°C
Keep dry and avoid condensation
Re-dry electrodes at 300–350°C for 1 hour
Moisture content: 0.10%
Diffusible hydrogen: 3 ml per 100g weld metal
Product Details
Typical Chemical Composition (%)
| C | Si | Mn | Cr | Mo | Ni | S | P | V | Nb | N | B | W | Cu | Al |
| 0.080 | 0.40 | 0.60 | 2.40 | 0.20 | 0.40 | 0.010 | 0.010 | 0.20 | 0.050 | 0.03 | 0.002 | 1.70 | 0.02 | 0.001 |
Typical Mechanical Properties (All Weld Metal)
| Heat Treatment | Yield Strength Rp (N/mm²) | Tensile Strength Rm (N/mm²) | Elongation A5 (%) | Impact Energy ISO-V (J) +20°C |
| PWHT 740°C ±15°C × 2 Hours | ≥ 540 | 640 – 750 | ≥ 18 | 100 |
Diffusible Hydrogen
| Property | Value |
| Diffusible Hydrogen (per 100g weld metal) | 3 ml |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 60-90 |
| 3.15 | 90-120 |
| 4.00 | 140-180 |
