Description
Why 310S Outclasses Competitors
| Challenge |
310S Plate |
309 |
Inconel 601 |
| Max Continuous Heat |
1.150°C |
1.000°C |
1.200°C |
| Cost per Ton |
$8.200 |
$6.500 |
$34.000 |
| Cyclic Oxidation (1.000 cycles) |
0.02 mm scale loss |
0.5 mm scale loss |
0.01 mm scale loss |
Key Properties
Cr/Ni Synergy: 25% Cr forms tenacious oxide layers; 20% Ni stabilizes structure against embrittlement.
Carbon Control: 0.08% max prevents carbide precipitation during prolonged heat exposure.
Sulfur Resistance: Withstands 5% H₂S environments up to 600°C (NACE MR0175 compliant).
Industry-Specific Dominance
1. Petrochemical
Pyrolysis furnace tubes | Coke drum cladding | Sulfur recovery unit ducts
2. Energy
Biomass boiler baffles | Nuclear waste containment shells | Coal gasifier liners
3. Advanced Manufacturing
Aerospace turbine shrouds | Semiconductor diffusion furnaces | Hydrogen electrolyzer stacks
4. Recycling
Scrap melting furnace hearths | Aluminum dross processing pans
Fabrication Intelligence
Cutting:
Plasma/Laser: Prevents edge carburization | Kerf tolerance ±0.1 mm
Welding:
Filler Metals: ER310. ER310MoL | Interpass temp ≤150°C to avoid sigma phase
Post-Processing:
Solution Annealing: 1.050–1.100°C water quench restores corrosion resistance
Surface Finishes: 2B mill, #8 mirror, or shot-blasted for thermal reflectance
Global Proof of Performance
Saudi Aramco: “310S plates in our ethylene crackers lasted 12 years vs. 7 years for 309.”
Indian Steel Plant: “Zero warping in reheating furnace skids after 5.000+ thermal cycles.”
French Nuclear Lab: “310S containment vessels showed no intergranular corrosion after 15-year service.”
