Features
Oxidation resistant to 1900°F
Moderate strength at high temperature
Ease of fabrication
Good sulfidation resistance
Good weldability
Applications
Annealing covers and boxes
Carbon saggers
Waste incinerators
Pulverized coal burners
Brazing fixtures
Lead pans, neutral salt pots
Muffles, retorts
Furnace fans and shafts
Radiant tubes for aluminum and steel annealing
Glass forming equipment
Thermowells
Paper mill equipment
Power boiler tube hangers
Rotary kilns and calciners
Anchor bolts
Chemical Composition (%) of 309S and 309H Stainless Steel Plate
| C | Mn | Si | P | S | Cr | Ni | |
| 309S | max: 0.08 | 2.0 max | 0.75 max | 0.045 max | 0.03 max | min: 22.0 max: 24.0 | min: 12.0 max: 15.0 |
| 309H | min: 0.04 max: 0.10 | 2.0 max | 0.75 max | 0.045 max | 0.03 max | min: 22.0 max: 24.0 | min: 12.0 max: 15.0 |
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