Heat Resistant SS Sheet Metal 309S Hot Rolled Stainless Steel Plate For Petroleum Refining

Heat Resistant SS Sheet Metal 309S Hot Rolled Stainless Steel Plate

309S Stainless Steel Plate Description:

309S stainless steel-S30908 (American AISI, ASTM) 309S. 309S is free-cutting stainless steel containing sulfur, which is mainly used on occasions that require free cutting and high surface gloss. 0Cr23Ni13 corresponds to American standards S30908, 309S (American AISI, ASTM). 0Cr23Ni13 stainless steel has better corrosion resistance and heat resistance than 0Cr19Ni9 can withstand repeated heating below 980℃ and has higher high-temperature strength, oxidation resistance and carburization resistance.

309S (UNS S30908) is the low carbon version of the alloy. It is utilized for ease of fabrication. 309H (UNS S30909) is a high carbon modification developed for enhanced creep resistance. It most instances the grain size and carbon content of the plate can meet both the 309S and 309H requirements.

Alloy 309 can be easily welded and processed by standard shop fabrication practices.

309S Stainless Steel Plate Chemical Composition (%):

309S Stainless Steel Plate Corrosion Resistance:

1. Wet Corrosion:
Alloy 309 is not designed for service in wet corrosive environments. The high carbon content, which is present to enhance creep properties, has a detrimental effect on aqueous corrosion resistance. The alloy is prone to intergranular corrosion after long term exposure at high temperatures. However, due to its high chromium content (23%), Alloy 309 is more corrosion resistant than most heat resistant alloys.

2. High Temperature Corrosion:
Alloy 309 resists high temperature corrosion in most in-service conditions. Operating temperatures are as follows:

2-1: Oxidizing conditions (max. sulfur content – 2 g/m3)
1922°F (1050°C) continuous service
2012°F (1100°C) peak temperature

2-2: Oxidizing conditions (max. sulfur greater than 2 g/m3)
1742°F (950°C) maximum temperature

Low oxygen atmosphere (max. sulfur content – 2 g/m3)
1832°F (1000°C) maximum temperature

2-3: Nitriding or carburizing atmospheres
1562 –1742°F (850 – 950°C) maximum

The alloy does not perform as well as Alloy 600 (UNS N06600) or Alloy 800 (UNS N08800) in reducing, nitriding or carburizing atmospheres, but it does outperform most heat resistant stainless steels in these conditions.

309S Stainless Steel Plate Applications:

1) Furnaces — burners, doors, fans, piping and recuperators

2) Fluidized Bed Furnaces — grids, piping, wind boxes

3) Paper Mill Equipment

4) Petroleum Refining — catalytic recovery systems, recuperators

5) Power Generation — pulverized coal burners, tube hangers

6) Thermal Processing — annealing covers and boxes, burners grids, doors, fans, lead pans and neutral salt pots, muffles and retorts, recuperators, walking beams

7) Waste Treatment — incinerators, rotary kilns and calciners

Petroleum Refining SS Sheet Metal 309S

309S hot rolled stainless steel plate

Petroleum Refining heat resistant stainless steel sheet

Heat Resistant SS Sheet Metal 309S Hot Rolled Stainless Steel Plate For Petroleum Refining Images