309/309S Stainless Steel Bar

309/309S Stainless Steel Bar

309 and 309S are austenitic chromium-nickel stainless steels that are typically used for higher temperature applications. Due to its high chromium and nickel content, 309 and 309S alloys have a high degree of corrosion resistance, excellent oxidation resistance and excellent heat resistance, while providing good strength at room temperature and high temperature. The only significant difference between 309 and 309S is the carbon content. The 309S alloy has less carbon, which minimizes carbide precipitation and improves weldability.
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309/309S Stainless Steel Bar Description

309 and 309S are austenitic chromium-nickel stainless steels that are typically used for higher temperature applications. Due to its high chromium and nickel content, 309 and 309S alloys have a high degree of corrosion resistance, excellent oxidation resistance and excellent heat resistance, while providing good strength at room temperature and high temperature. The only significant difference between 309 and 309S is the carbon content. The 309S alloy has less carbon, which minimizes carbide precipitation and improves weldability.


Product Parameters

Product Name                          

309/309S Stainless Steel Bar

Type

Steel Bar

Outer Diameter

Round Bar

4mm-500mm

Hexagon Bar

18mm-57mm (11/16″ to 2-3/4″)

Square Bar

18mm-47mm (11/16″ to 1-3/4″)

Flat Steel

1/2 "to 10", Thickness: 2mm-150mm, Can provide customized

Length

1-6 meters, Length can be customized

Standard

ASTM, AISI, JIS, GB, DIN, EN, etc.

Surface

Black, Bright Polished, Rough Turning, Mattness Surface Treatment, No. 4. BA, etc.

Scope of Application

Stainless steel bars are used in a variety of industries such as shipbuilding,

Defense, Automotive, Textiles, Paper and pulp, Manufacturing, Cement,

Heavy earthmoving equipment and construction, etc.


Chemical Composition


C

Si

Mn

Cr

Ni

S

P

≤ 0.08

≤ 0.75

≤ 2.0

22.0~24.0

12.0~15.0

≤ 0.03

≤ 0.045


Mechanical Properties

Tensile Strength Kb (MPa)

Yield Strength σ0.2 (MPa)

Elongation D5 (%)

Hardness

≥515

≥205

≥35

≤ 217HB


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