ASTM A240 309S Stainless Steel Plate 3.0 - 16.0mm TISCO 1219mm
Grade 309S Stainless Steel Plate Thickness 3.0 - 16.0mm TISCO SS Plate ASTM A240
The corresponding Chinese grade of 309S is 0Cr23Ni13, and the characteristics and uses of American Standard S30908 (American AISI, ASTM): corrosion resistance and heat resistance are better than 0Cr19Ni9.
309s is a lower carbon variant of 309 stainless steel used where welding is required. The lower carbon content minimizes carbide precipitation in the heat-affected zone near the weld, which can lead to intergranular corrosion (weld erosion) of stainless steel in some environments.
It can withstand repeated heating below 980 °C, and has high high temperature strength, oxidation resistance and carburization resistance.
Standard Specification Of 309S Plate
| Thickness | 4mm-100mm | ||||||
| Width | 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc | ||||||
| Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc | ||||||
| Surface | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc | ||||||
| Finish | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) | ||||||
| Form | Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc. |
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309S stainless steel composition content.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 309S | Min. Max. |
≤0.08 | ≤2.0 | ≤1.00 | ≤0.045 | ≤0.03 | 22.0-24.0 | / | 12.0-15.0 | |
- Yield strength/Mpa: ≥ 205
- Tensile strength /MPa: ≥515
- Elongation /% : ≥ 40
- Section reduction rate /% : ≥50
309S 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.
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