309S Stainless steel pipe

309S Stainless Steel Strip is a highly versatile, austenitic chromium-nickel stainless steel specifically designed for extreme high-temperature applications. Its elevated chromium and nickel content provides outstanding oxidation resistance, significantly outperforming standard 304/304L grades. The low carbon content ("S" designation) minimizes carbide precipitation during prolonged exposure to high temperatures, ensuring excellent corrosion resistance in demanding environments. This combination makes 309S strip an ideal material for components that must withstand intense heat, thermal cycling...

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Detailed Description

309S Stainless steel strip is a highly versatile, austenitic chromium-nickel stainless steel specifically designed for extreme high-temperature applications. Its elevated chromium and nickel content provides outstanding oxidation resistance, significantly outperforming standard 304/304L grades. The low carbon content ("S" designation) minimizes carbide precipitation during prolonged exposure to high temperatures, ensuring excellent corrosion resistance in demanding environments. This combination makes 309S strip an ideal material for components that must withstand intense heat, thermal cycling, and corrosive atmospheres.

Product Name	309S Stainless steel pipe
Standard	JIS, AISI, ASTM, GB,DIN, EN, etc.
Material	309S
Surface	black painted, anti rust varnished, PE coated, anti rust oiled, galvanized, checkered, color coated
Outside diameter	6mm-426mm, or as customer's requirement
Length	1m-12m, or as customer's requirement
Wall thickness	0.5mm-10mm or customer's requirement
Technical Methods	Hot Rolled, Cold rolled
Packing	Standard Seaworthy Packing, according to customer required
MOQ	1 Ton, more quantity price will be lower

Key Features & Advantages

Exceptional High-Temperature Resistance: Excellent oxidation resistance up to 2000°F (1093°C), making it suitable for continuous high-heat service.
Low Carbon Content (Suffix "S"): The carbon content is capped at a maximum of 0.08%, preventing harmful carbide precipitation and subsequent intergranular corrosion in the weld heat-affected zone.
Superior Corrosion Resistance: Offers better general corrosion resistance than 304/304L, particularly against sulfidation and other aggressive atmospheres found in industrial settings.
Excellent Fabricability: Can be readily formed, drawn, and stamped using standard shop fabrication practices.
Good Mechanical Properties: Maintains high strength and structural integrity at elevated temperatures.

Standard Specifications

UNS Designation: S30908
ASTM: A240 (Plate, Sheet, and Strip)
AISI: 309S
European Norm (EN): 1.4833

Typical Chemical Composition (Weight %)

Element	Content (%)
Chromium (Cr)	22.0 - 24.0
Nickel (Ni)	12.0 - 15.0
Manganese (Mn)	2.00 max
Silicon (Si)	0.75 max
Carbon (C)	0.08 max
Phosphorus (P)	0.045 max
Sulfur (S)	0.030 max
Iron (Fe)	Balance

Typical Mechanical Properties (At Room Temperature)

Property	Value
Tensile Strength	75 ksi (515 MPa) min
Yield Strength (0.2% Offset)	30 ksi (205 MPa) min
Elongation (in 2")	40% min
Hardness (Brinell)	217 max
Hardness (Rockwell B)	95 max

Available Forms & Customization

We supply 309S Stainless steel strip in a variety of forms to meet your specific manufacturing needs:

Temper: Annealed, 1/4 Hard, 1/2 Hard, Full Hard, Spring Temper
Thickness: Ranging from 0.001" to 0.125" (0.025mm to 3.175mm)
Width: Precision slit to custom widths
Edges: Mill Edge, Slit Edge, Deburred Edge
Surface Finish: Standard 2B, Bright Annealed (BA), Matte, and custom surfaces available.

Primary Applications

309S strip is the material of choice for a wide range of high-temperature components, including:

Heat Exchangers & Recuperators
Furnace Components: Radiant tubes, combustion cans, baffles, burner parts
Welding Consumables: Used as filler metal for welding dissimilar metals and for overlaying carbon steel.
Food Processing Equipment: Oven liners, conveyor belts, and parts requiring frequent high-temperature cleaning.
Chemical Processing: Equipment exposed to corrosive high-temperature environments.
Aircraft & Automotive Exhaust Systems