ESt Castarc is a nickel free cast iron problem solving electrode. It seals in porosity generating contaminants prior to finish welding with nickels. This is a great choice for non-machinable welds on machine bases, furnace grates and exhaust manifolds. This alloy has a perfect color match to cast iron.
| AWS Class: ESt | Certification: AWS A5.15/A5.15-90 (R2006) |
| Alloy: ESt | ASME SFA A5.15 |
| Welding Position: F, V, OH, H | Current: DCEP |
| Tensile Strength, kpsi: | 62 |
| Yield Strength, kpsi: | 50 |
| Elongation in 2”%: | 20 |
| Hardness: | Brinell 380, Rockwell C39 |
Typical Wire Chemistry as per AWS A5.15 (single values are maximum)
| C | Mn | Si | P | S | Fe |
| 0.15 | 0.60 | 0.15 | 0.04 | 0.04 | Remainder |
| Typical Welding Parameters | |||
| Diameter | Process | Amps | |
| in | (mm) | ||
| 3/32 | (2.4) | SMAW | 70-85 |
| 1/8 | (3.2) | SMAW | 85-110 |
| 5/32 | (4.0) | SMAW | 110-140 |