310 Stainless Steel Polished Rod

Service Environments

Furnace hangers and support brackets. Burner nozzles. Heat treatment baskets and fixtures. Kiln furniture pins. Exhaust system fasteners near turbine outlets. Anywhere the 310 stainless steel polished rod operates, the polished surface helps — less scale adhesion during thermal cycling, easier inspection between runs. Ji lai da forges each rod at diameters 20–350 mm with a stock size at 154 mm × 500 mm. Factory-direct China manufacturer, FOB / CIF / DDP shipping, MTC per EN 10204. ISO 9001 certified facility.

FAQ

Q1: Is polished rod necessary, or can I use as-forged?

A: If you're machining the rod to final dimensions anyway, as-forged (rough-turned) saves cost — you'll cut the surface off regardless. Polished rod makes sense when you need tight diameter tolerance before machining, or when the bar is used as-is with minimal secondary work.

Q2: How does 310 behave under cyclic heating?

A: It handles thermal cycling well compared to lower-alloyed grades. The high chromium forms a stable oxide layer that spalls less during heating and cooling. For extreme cycle frequency — say, daily from ambient to 1000 °C and back — consider 310S (low carbon) to avoid sensitization over months of service.

Q3: Can 310 rod be welded?

A: Yes, with appropriate filler (typically 310 or 309 filler wire). The high carbon of standard 310 can cause sensitization near the weld, so for welded assemblies that will see corrosive service at temperature, 310S is the better choice. For non-corrosive high-temperature use, standard 310 welds without issue.

Q4: What hardness can I expect?

A: Annealed condition, typically around HRB 70–85. Not a hardenable grade — 310 is austenitic and does not respond to heat treatment. If you need higher hardness, we can discuss cold-worked conditions or alternative grades.

Q5: Do you supply test specimens with the rod?

A: Mechanical test results are included in the MTC (EN 10204 3.1). Separate test specimens can be provided on request — just specify at order.