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Summary
309s is a highly alloyed austenitic stainless steel used for its excellent oxidation resistance, high temperature strength and creep resistance. The lower nickel content of 309s improves resistance to sulphur attack at high temperatures. . 309s is recommended for applications where sensitisation, and subsequent corrosion by high temperature gases or condensates during shutdown may pose a problem.
Typical Applications
Products details:
| Commodity | 309s stainless steel coils | ||||||||
| Width | 1000-1500mm |
||||||||
| Thickness | 0.3mm to 14 mm | ||||||||
| Surface | 2BNO16KBAMIRRORBRUSHHAIRLINE |
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| Applications | Boiler,castings,high temperature enviroment | ||||||||
| Payment terms | 30%deposit,the balance paid against the copy of BL | ||||||||
| Delivery time | Up to order quantity | ||||||||
Chemical Composition(%):
ASTM A240/A240M-05
Grade |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
|
0.08 max |
2.00 |
0.045 |
0.030 |
0.075 |
22.0 - |
12.0 - |
Properties at Elevated Temperatures
The values quoted are those for 309s
Short Time Elevated Temperature Tensile Stress
Temperature |
oC |
550 |
650 |
750 |
850 |
950 |
1 050 |
Tensile Stress |
MPa |
440 |
360 |
240 |
150 |
70 |
30 |
Creep Data
Stress to develop a creep rate of 1% in the time indicated at the temperature indicated.
Time |
TemperatureoC |
550 |
600 |
650 |
700 |
750 |
800 |
10 000 h |
Stress MPa |
100 |
80 |
60 |
30 |
25 |
10 |
Creep Rupture Stress
Time |
Temperature oC |
600 |
700 |
800 |
900 |
1 000 |
1 000 h |
Stress MPa |
180 |
90 |
35 |
20 |
5 |
Maximum Recommended Service
Temperature
(Oxidising Conditions)
Continuous 1100oC
Intermittent 980oC
Thermal Processing
1. Annealing. Heat between 1 050oC and 1 150oC and water quench. This treatment ensures that all carbides are in solution.
2. Stress Relieving 250-400oC for 1 hour.
3. Hot Working
Initial forging and pressure 1150-1200oC
Finishing temperature 1000oC
Our Products:
Packing:
Our Advantage:
1) Big manufacture original materials (TISCO BAOSTEEL ZPSS LISCO)
2) Five years stainless steel exprience
3) Professional suggestions
4) Customers around the world
Send Inquiry to This Supplier
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