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309S Stainless Steel Plate

Non-magnetic 2B finish aisi 309S stainless steel sheet 309S stainless steel--S30908(America AISI, ASTM) 309S. The steel plant produces 309S stainless steel. It has good corrosion performance and high temperature performance. It can stand the high temperature of 980 °C. It is mainly used in...

Non-magnetic 2B finish aisi 309S stainless steel sheet  

309S stainless steel--S30908(America AISI, ASTM) 309S. The steel plant produces 309S stainless steel. It has good corrosion performance and high temperature performance. It can stand the high temperature of 980 °C. It is mainly used in industries like boiler and chemistry. Compared with 309S, 309 has no content of S. 


309L is a variant of 309 stainless steel with low carbon content, which is used for welding purposes. The lower carbon content minimizes the precipitation of carbides in the heat-affected zone near the welding seam. The precipitation of carbides may lead to intergranular corrosion (welding erosion) of stainless steel in some environments.


Chemical Composition 

Except the special explanation, the following chemical constituents are in accordance with the ASTM A167 and ASTM A240 standards. 


309 Alloy

309S Alloy


(UNS S30900)

(UNS S30908)

C

0.20

0.08

Mn

2.00

2.00

P

0.045

0.045

S

0.030

0.030

Si

0.75

0.75

Cr

22.00 min / 24.00 max

22.00 min / 24.00 max

Ni

12.00 min / 15.00 max

12.00 min / 15.00 max

Fe

remaining part

remaining part



310 Alloy

310S Alloy


(UNS S31000)

(UNS S31008)

C

0.25

0.08

Mn

2.00

2.00

P

0.045

0.045

S

0.030

0.030

Si

1.75

1.50

Cr

24.00 min / 26.00 max

24.00 min / 26.00 max

Ni

19.00 min / 22.00 max

19.00 min /22.00 max

Fe

remaining part

remaining part


Usage 

Furnace Material 

309S is a sulfur contained free cutting stainless steel for occasions requiring high finish and easy cutting.


Characteristics 

It can withstand repeated heating below 980 ℃. It has high high temperature strength, oxidation resistance and carburizing resistance.

Surface: surfaces like BA surface, 2B surface, no. 1 (white skin), 2 D surface, no. 4(dull polish), HL(wire drawing), 8K surface are of high quality and good luminance


Gauge: thickness 0.02mm ~ 40mm; width 3.5mm ~ 1550mm


Applications: Petroleum, electronics, chemical, medicine, textile, food, machinery, construction, nuclear power, aerospace, military industry and other industries.


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