Hobart SubCOR SL P9 description: SubCOR SL P9 is a seamless, low-alloy, cored wire for submerged-arc welding. SubCOR SL P9 has a nominal 9% chromium/1% molybdenum weld deposit, and is suitable for joining creep-resistant steels having a similar composition. SubCOR SL P9 exhibits good creep and scale resistance at temperatures up to 1100F (600C).