309 Stainless Steel

Characteristics: oxidation resistance
Standard: ASME, ASTM, EN, UNS, GB, DIN, JIS
Certification: ISO, CE, ROHS
Payment Terms: T/T, L/C, Paypal, Western Union

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Product Details

309 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

 

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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
       Btu•ft/ft2•hr•°F

7.4

11.5

12.4

-

-

Elasticity modulus

28.5

22.5

21.0

19.5

18.0

*70°F to indicated temperature.

 

Product Description

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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

 

 

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Product Application


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

 

Packaging and Delivery

  • Standard  exporting package.

  • Original  package or neutral package.

  • According  to clients’ needs.

  • Shipped  in 10-35 days after payment.

 

Our Service

  • Spot delivery, including delivering small batches of goods

  • Provide wide-range and complete materials series products

  • Cutting plates, including complex shapes of materials and special  processing and disposal

  • Cutting bars and strips

  • Our application technology expert provide the best material and  recommendation

  • One-stop service

 


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