Super austenite 904L stainless steel sheet ASTM A240 SS Plate
Product Description
- Item: Super austenite 904L stainless steel sheet ASTM A240 SS Plate
- Standard: ASTM A240,ASTM A480,ASTM A167,ASTM A176
- Material: 201,202,301,304,304L,304N,XM21,304LN,305,309S,310S,316,316Ti,316L,316N,316LN,317,317L,321,347,329,405,409,430,434,444,403,410,420,440A,etc.
- Specifications:
- Thickness: 0.01-200mm
- Width: 1m,1.22m,1.5m and 1.8m.
- Length: 2m,2.44m,5.8m,6m.
- Surface: No.1, 2B, BA, NO.4, 8K mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc.
What is 904L stainless steel?
904L (N08904 ,EN1.4539) super austenitic stainless steel contains 14.0-18.0% chromium, 24.0-26.0% nickel, and 4.5% molybdenum.
904L super austenitic stainless steel is a low-carbon high-nickel, molybdenum austenitic stainless acid-resistant steel, which is a proprietary material introduced by the French company H · S. Has good activation-passivation transformation ability, excellent corrosion resistance, good corrosion resistance in non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, and phosphoric acid, and good in neutral chloride-containing media Resistance to pitting corrosion, and has good resistance to crevice corrosion and stress corrosion. It is suitable for sulfuric acid of various concentrations below 70 ° C. It also has good corrosion resistance in acetic acid at any concentration and temperature under normal pressure, and mixed acids of formic acid and acetic acid.
Datasheet for 904L Stainless steel
| Chemical Composition% |
| Material | C | Si | Mn | P | S | Cr | Mo | Ni | Cu |
| 904L | ≤0.02 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.035 | 19.0-23.0 | 4.0-5.0 | 23.0-28.0 | 1.0-2.0 |
| Mechanical Properties |
| Material | Yield Strength N/mm2 | Tensile Strength
N/mm2 | Elongation
(%) |
| 904L | ≥216 | ≥490 | ≥35 |
904L Stainless steel Applications
- Wiring in electrostatic precipitators
- Oil refinery components
- Seawater cooling devices
- Gas scrubbing plants
- Pulp and paper processing industries
- Acetic, phosphoric and sulphuric acid processing plants
904L Grade Specification Comparison
| Grade | UNS No | Old British | Euronorm | Swedish SS |
| BS | En | No | Name |
| 904L | N08904 | 904S13 | - | 1.4539 | X1NiCrMoCuN25-20-5 | 2562 |
Surface
1D—The surface has discontinuous particles, which is also called matte. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2D—Slightly shiny silver-white. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2B—Silver white and better gloss and flatness than 2D surface. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + quenching and tempering rolling.
BA—The surface gloss is excellent and has a high reflectivity, just like the mirror surface. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + surface polishing + quenched and tempered rolling.
No.3—has better gloss and rough surface. Processing technology: Polishing and tempering rolling of 2D products or 2B with 100 ~ 120 abrasive materials.
No.4—has better gloss and fine lines on the surface. Processing technology: Polishing and tempering rolling of 2D products or 2B with 150 ~ 180 abrasive materials.
HL—Silver gray with hair streaks. Processing technology: Polish the 2D product or 2B product with a suitable size of abrasive material to make the surface appear continuous grain.
MIRROR—is in a mirror state. Processing technology: 2D or 2B products are ground and polished to a mirror effect with a suitable abrasive material.
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