Stainless Steel Bar 309S

309S is a free cutting stainless steel with sulfur, used in applications where free cutting and high surface smoothness are the main requirements.

309S Stainless steel Bar Price in China ,Manufacturer of 309S Stainless Steel Bar .

309S corresponding to the Chinese brand is 0Cr23Ni13, the American standard S30908 (AISI, ASTM) characteristics and use: corrosion resistance, heat resistance are better than 0Cr19Ni9.
The 309S is a variant of the lower carbon 309 stainless steel for use where soldering is required.
The lower carbon content minimizes the precipitation of carbides in the heat affected zone near the weld, which may lead to intergranular corrosion (welding erosion) of stainless steel in some environments.

Stainless steel has a series of characteristics such as excellent corrosion resistance, formability and toughness in a wide temperature range, so it has been widely used in heavy industry, light industry, daily necessities industry and building decoration industries. Different stainless steel varieties are very important.

In stainless steel, two opposing forces operate simultaneously: ferrite forming elements continue to form ferrite, and austenite forming elements continue to form austenite. The final crystal structure depends on the relative amounts of the two types of additive elements. Chromium is a ferrite forming element, so chromium in the formation of stainless steel crystal structure and the austenite forming element is a competitive relationship. Because iron and chromium are ferritic forming elements, the 400 series stainless steels are fully ferritic stainless steels with magnetic properties. In the process of adding the austenite forming element nickel to fe-Cr stainless steel, with the increase of nickel composition, the formation of austenite will gradually increase, until all the ferrite structure is transformed into austenite structure, thus forming 300 series stainless steel.

300 series stainless steel is an alloy material containing iron, carbon, nickel and chromium. It is a non-magnetic stainless steel material with better malleability than 400 series stainless steel. Due to the austenitic structure of 300 series stainless steel, it has strong corrosion resistance in many environments, excellent resistance to fracture caused by corrosion caused by metal overstress, and its material properties are not affected by thermal treatment.
The bending and function of welding parts are excellent.
The electronic parts are non - magnetic and cold - rolled with strong formability, suitable for deep processing.
Stainless steel use: Western tableware, electronic parts.
309S Stainless steel Bar Price in China ,Manufacturer of 309S Stainless Steel Bar
SUS309S is austenitic stainless steel.
High nickel compared to 304.
The bending and function of welding parts are excellent.
The electronic parts are non - magnetic and cold - rolled with strong formability, suitable for deep processing.
Stainless steel use: Western tableware, electronic parts.

Equivalent Grades

Grade Euronorm China GB Japanese JIS
No.
309S 1.495 0Cr23Ni13 SUS309S

Standard Specification

Section Round, Square, Hexagonal bar, oval, shaped
Diamater 0.254mm,1mm,10.0mm,25.4mm,50.8mm,76.2mm,101.6mm,127.0mm,152.4mm,300.0mm,600.0mm
Length Since the custom
Surface 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc
Finish Hot rolled, forged and cold drawn
Use medical appliances, building materials, chemicals, ship parts, auto parts, food industry ETC

Composition content

Grade C Mn Si P S Cr Mo Ni N
309S Min.
Max.
≤0.08 ≤2.00 ≤1.05 ≤0.045 ≤0.03 22.0~24.0 / 12.0-15.0 /
Yield strength/Mpa: ≥205
Tensile strength /MPa: ≥515 (hardness HB≤187)
Elongation /% : ≥40
Hardness: 187 hb or less;
90 HRB or less;
200 hv or less
Density :.280 LBS /cubic inch(density 7.93g/cm3)

Characteristic machining technology


1D -- The surface has discontinuous granular shape, also known as fog surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2D - A slightly silvery white colour.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2B -- Silver white with better gloss and flatness than a 2D surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + quenching and tempering rolling.
Ba - Excellent surface gloss, high reflectivity, like a mirror surface.
Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + surface polishing + quenching and tempering rolling.
No.3 -- Good gloss, coarse grain surface.
Processing technology: polishing and tempering rolling for 2D or 2B with 100~120 abrasive materials (JIS R6002).
No.4 -- Good gloss, fine lines on the surface.
Processing process: polishing and tempering rolling for 2D or 2B with 150~180 abrasive materials (JIS R6002).
HL -- Silver grey with hair streaks.
Processing technology: 2D products or 2B products with appropriate granularity of abrasive materials for polishing the surface is a continuous abrasive grain.
MIRRO -- Specular.
Processing technology: 2D products or 2B products with appropriate granularity of the grinding material grinding and polishing to the mirror effect.

Price List

Stainless Steel 309S bar Price List 309S bar FOB Shanghai Per Unit (USD)
309S stainless steel Round Bar $2850.00-$3050.00
309S mirror Stainless Steel Bar $3150.00-$3250.00
309S Stainless Steel Black Bar $3050.00-$3150.00
309S Stainless Steel Square Bar $2850.00-$3050.00

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