904L stainless steel bar super austenitic stainless steel belongs to low carbon high nickel, molybdenum austenitic stainless steel, with good activation and passivation conversion ability, excellent corrosion resistance, in non-oxidizing acids such as sulfuric acid, acetic acid, formic acid, phosphoric acid has good corrosion resistance, in neutral chloride ion medium has good pitting resistance, at the same time has good crevice corrosion resistance and stress corrosion resistance.
Standard:ASTM A276、ASTM A182/ASME SA-182
Specification:
Round bar:Diameter: 3mm~800mm
Square bar:Size: 4mm*4mm~100mm*100mm
Flat bar:Thickness: 2mm~100mm
Width: 10mm~500mm
Hexagonal:Size: 2mm~100mm
Length:6m or as customer customize
Certificate：ISO 9001 and third party inspection, SGS,BV
Surface:Black, peeled , cold drawn, turned and polished , precision ground
Packing:
- bundles to be covered by polythene & strapped securely
- if require, the pack into wooden box
904L stainless steel bar chemical composition：
| Chemical composition percent(%) | ||||||||||
| Grade | C
（≤） |
Si
（≤） |
Mn
（≤） |
S
（≤） |
P
（≤） |
Cr | Ni | Mo | N
（≤） |
Cu
（≤） |
| 904L | 0.02 | 1.00 | 2.00 | 0.035 | 0.045 | 19.00-23.00 | 23.00-28.00 | 4.00-5.00 | 0.10 | 1.0-2.0 |
904L SS bar physical properties：
| Physical properties | |||
| Grade | Tensile strength (Min) | Yield Strength(min) | Elongation (%)Min |
| σb (MPa) | σ(MPa) | ||
| 904L | 490 | 220 | 35 |
Application:
1. Petroleum and petrochemical equipment, such as reactors in petrochemical equipment, etc.
- Storage and transportation equipment of sulfuric acid, such as heat exchanger, etc.
- The flue gas desulfurization device in the power plant is mainly used in the following parts: tower body of the absorption tower, flue, door plate, internal parts, spray system, etc.
- Scrubber and fan in organic acid treatment system.
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