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Safe and Grade 904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids,particularly sulphuric acid. It is also highly resistant to chloride attack - both pitting / crevice corrosion and stress corrosion cracking.This grade is non magnetic in all conditions and has excellent weldability and formability.The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures.
904L Stainless Steel U Channel Specification
| Product | 904L Stainless Steel U Channel | Grade | 200 series：201, 202 etc. |
| Thickness | 0.8-25mm or as required | 300 series：304, 304L, 316, 316L, 301, 302, 303, 309, 309S, 310, 310S, 321, 904L etc. | |
| Width | 25x25mm-200x125mm / 50x37mm-400x104mm | 400 series：410, 420, 430, 440 etc. | |
| Length | 1-12m or as required | Duplex stainless：2205, 2507 2304 etc. | |
| Standard | ASTM,JIS,SUS,GB,DIN | Other：1.4410, 1.4362, 254SOM etc. | |
| Technique | Hot rolled / Cold rolled | Surface | 2B,BA,No.1,No.4,No.8,8K,Mirror,Checkered,Embossed, Hairline,Sand Blast,StainBrush,Etching,etc. |
904L Stainless Steel Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu | |
| 904L | min. max. | – 0.02 | – 2 | – 1 | – 0.045 | – 0.035 | 19 23 | 4 5 | 23 28 | 1 2 |
904L Stainless Steel Mechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| 904L | 490 | 220 | 36 | 70-90 typical | 150 |
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