Alloy 309 Heat Resistant Stainless Steel Plate is a austenitic heat resistant alloy, under the condition of continuous temperature resistant to oxidation temperature of 1900 ° F. Under thermal cycling temperature, heat temperature at 1850 ° F.
The high chromium content of 309 and the relatively low nickel content increased the corrosion resistance of the sulfurized atmosphere.309 simple carburizing is not suitable for high carburizing environment.
309 Chemical Composition | |||||||
| Ni | C | Mn | P | S | Fe | Cr |
min | 12.0 | - | - | - | - | - | 22.0 |
max | 15.0 | 0.08 | 0.045 | 0.045 | 0.03 | Balance | 24.0 |
The 309 alloy has a variety of product specifications, and the particle size and carbon content can meet the requirements of 309S and 309H at the same time. Long time exposure in 1100-1600 ° F will produce sigma phase, reduce the ductility and impact resistance at room temperature. In order to prevent the appearance of the sigma phase, the mechanical shock at room temperature should be avoided.309 there is a mechanical performance similar to 43% AISI B1112 standard. It is recommended to take shape at room temperature, and to use AWS e309-16 coated electrode or ER309 soldering wire for welding.
Material standard: AMS 5523
Product form: 309 plates, 309 welding products, 309 pipes, 309 sheet.
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Physical Performance | |
Density | Melting Point |
0.285lb/inch3 | 2500-2590℃ |
Temperature, °F | 70 | 1000 | 1200 | 1400 | 1600 |
Coefficient of thermal expansion, in/in°F*10-6 | - | 9.7 | - | - | 10.1 |
Heat conductivity | 7.4 | 11.5 | 12.4 | - | - |
Elasticity modulus | 28.5 | 22.5 | 21.0 | 19.5 | 18.0 |
*70°F to indicated temperature.
309 Stainless Steel Characteristics:
Resistance to oxidation under 1900 ° F
Keep medium strength in high temperature
Easy to processing
Good sulfide resistant performance
Good welding performance
Typical tensile property
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Temperature, °F | 70 | 1200 | 1600 |
Coefficient of thermal expansion, ksi | 90 | 52 | 18 |
0.2%ductility | 45 | 22 | - |
Ductility,% | 50 | 26 | 32 |
Typical creep fracture performance
Temperature, °F | 1200 | 1400 | 1600 | 1800 |
1,000h,ksi | 16 | 3.4 | 1.4 | 0.22 |
100,000h, ksi | 17.2 | 4.8 | 1.6 | 0.56 |
309 Stainless Steel application:
Anneal cover and box.
A fire - resistant clay box for firing boxes.
Destructor
Pulverized coal burner
Brazing equipment
Lead pot and neutral salt pan
Muffle furnace and reaction cans
Blades and shaft industrial furnace
Aluminum and iron annealing with radiant tube
Glass forming equipment
Thermocouple thermometer casing
Paper mill equipment, power boiler tub
Rotary kiln and calcination furnace
The Anchor bolt
Standard exporting package.
Original package or neutral package.
According to clients’ needs.
Shipped in 10-35 days after payment.
Spot delivery, including delivering small batches of goods
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Cutting plates, including complex shapes of materials and special processing and disposal
Cutting bars and strips
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