STARBLAZE PRIME 7016 A1
AWS A5.5: E 7016-A1 | EN 1599: E Mo B 42 H5
Low Hydrogen, Crack Resistant, Excellent for 0.50% Mo Steels
A basic coated low hydrogen electrode designed for producing tough, crack-free welded joints on carbon-manganese and low alloy steels. StarBlaze PRIME 7016-A1 deposits approximately 0.50% molybdenum in the weld metal, making it particularly suitable for welding 16Mo3 and similar creep-resistant steels. The electrode provides excellent positional welding characteristics, ultra-smooth finely rippled weld beads, low diffusible hydrogen levels below 4 ml/100g, and excellent mechanical properties. It is especially suitable for root joints, pipe welding, and applications requiring reliable creep strength up to 525°C.
Available Packs
Dimensions: 2.50 mm x 350 mm, 3.15 mm x 450 mm, 4.00 mm x 450 mm, 5.00 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 low hydrogen electrode
Less than 4 ml diffusible hydrogen
Excellent for 0.50% molybdenum steels
Ultra-smooth finely rippled weld beads
Tough and crack-resistant weld deposits
Excellent positional welding characteristics
Suitable for root pass welding
Ideal for pipe welding applications
Good creep strength up to 525°C
Excellent weld metal toughness
Suitable for AC and DC+ polarity
Power Generation Industry
Boiler Manufacturing
Pressure Vessel Fabrication
Petrochemical Industry
Pipeline Construction
Refinery Projects
Process Plant Construction
Heavy Engineering Industries
Manual Metal Arc Welding (MMA/SMAW)
Root pass welding
Pipe welding
Pressure vessel fabrication
Boiler fabrication and repair
Structural welding of low alloy steels
Positional welding applications
Maintenance and repair welding
Designed for welding 0.50% molybdenum steels
Suitable for 16Mo3 and G20Mo5 steels
Suitable for ASTM A355 Grade P1
Suitable for ASTM A182M Grade F1
Suitable for S(P)235 to S(P)420 steels
Suitable for GP240 to GP280 grades
Suitable for L245 to L360 pipeline steels
Excellent for difficult access joints and root welding applications
Weld metal exhibits good creep strength at temperatures up to 525°C
Keep dry and avoid condensation
For HD≤5, re-dry at 340–360°C for 1 hour (maximum 3 cycles)
For HD≤10, re-dry at 300–350°C for 2 hours (maximum 3 cycles)
Product Details
Typical Chemical Composition (%)
| C | Si | Mn | P | S | Mo |
| 0.07 | 0.40 | 0.80 | 0.025 | 0.020 | 0.50 |
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 |
| As Welded | 450 | 550-620 | 26 | 70 |
| PWHT 620°C × 1 Hour | ≥420 | 510-610 | ≥24 | ≥47 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 60-80 |
| 3.15 | 100-130 |
| 4.00 | 140-170 |
| 5.00 | 180-220 |
