StarBlaze Prime 310
AWS A5.4: E310-16 | DIN EN ISO 3581-A: E 25 20 R 12
Rutile Coated | Austenitic Stainless | High Temperature and Corrosion Resistance
StarBlaze Prime 310 is a rutile-basic coated austenitic stainless steel electrode formulated for welding high-temperature resistant alloys, cast steels of 25Cr–20Ni grade, and dissimilar stainless joints. The weld metal is stable under thermal cycling, offers excellent corrosion and oxidation resistance up to 1200°C, and is ideal for furnace components, steam boilers, turbine housings, and similar applications. It delivers smooth arc performance with easy slag removal and clean bead appearance.
Available Packs
- Dimensions: 2.40 mm x 350 mm, 2.50 mm x 350 mm, 3.15 mm x 450 mm, 3.20 mm x 450 mm, 4.00 mm x 450 mm, 5.00 mm x 450 mm
- Pack Sizes: 2.5 Kg Pouch, 5 Kg Box
- Master Box: 20 Kg, 30 Kg, 40 Kg, Customisable packaging available on request
- Weld deposit resists oxidation and scale formation up to 1200°C
- Stable arc with spatter-free fusion and smooth bead surface
- Ideal for heat-resistant austenitic and ferritic stainless steel welding
- Cr-Ni balanced weld metal with 27% Cr and 21% Ni
- Mechanical properties: ≥550 N/mm² tensile, ≥30% elongation, ≥60 J impact
- Suitable for high-temp buffer layers and corrosion-prone environments
- Power plants and chemical refineries
- Furnace and kiln construction
- Steam boilers and waste incineration systems
- Gas turbine chambers and high-temperature ducts
- Petrochemical and thermal equipment manufacturing
- Shielded Metal Arc Welding (SMAW / MMA)
- Polarity: AC or DC
- Current range:
- 2.50 mm: 60–90 A
- 3.15 mm: 80–110 A
- 3.20 mm: 80–110 A
- 4.00 mm: 100–140 A
- 5.00 mm: 150–180 A
- Welding positions: 1G/PA, 2F/PB, 2G/PC, 3G/PF, 4G/PE
- Keep dry; re-dry if needed at 300–350°C for 1–2 hours (max 4 cycles)
- Avoid prolonged holding in the 600–850°C range to prevent sigma phase formation
- Designed for joints and overlays subject to high thermal loads and oxidation
- Ideal for maintenance and fabrication of high-temp stainless assemblies
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Cr | Ni | S | P |
| 0.10 | 0.70 | 2.00 | 27.00 | 21.00 | 0.010 | 0.020 |
Typical Mechanical Properties (All Weld Metal)
| Tensile Strength
Rm (N/mm2) |
Elongation
A5 (%) |
Charpy Impact Value
(ISO-V J RT) |
| ≥ 550 | ≥ 30 | ≥ 60 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 60-90 |
| 3.15 | 80-110 |
| 3.20 | 80-110 |
| 4.00 | 100-140 |
| 5.00 | 150-180 |
