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Product Specifications
| Product Name |
904l stainless steel |
| Thickness |
On demand |
| Length |
On demand |
| Industrial standard | UNS N08904 |
| Density | 8.0g/cm3 |
| Strength of extension | σb≥520Mpa |
| Ductility | δ≥35% |
| Application area |
Reactors, heat exchangers, centrifuges, reactors in petrochemical equipment |
| MOQ | 1 Ton |
| Payment terms | T/T,L/C,Western Union,etc |
| Price term | Ex-work,FOB,FCA,CIF,CFR,DDU,etc |
| Package | Export standard package, suit for all kinds of transport, or as required |
| Delivery time | Within 15 days after pay the deposit |
| Advantages |
1. Favorable price, high quality 2. Abundant stock, timely delivery 3.24 hours for your service |
Typical Chemical Composition (wt%)
| Element | Content | Function |
|---|---|---|
| C | ≤0.02 | Ultra-low carbon eliminates welding intergranular corrosion |
| Cr | 19.0–21.0 | Forms anti-corrosion passivation film |
| Ni | 24.0–26.0 | Stabilizes austenite, resists stress corrosion cracking |
| Mo | 4.0–5.0 | Boosts pitting & crevice corrosion resistance |
| Cu | 1.2–2.0 | Greatly improves resistance to reducing acids like sulfuric acid |
| Mn/Si | ≤2.0 / ≤1.0 | Deoxidation & microstructure adjustment |
| Fe | Balance | Base matrix |
Product Advantages
Acid Resistance
It significantly outperforms 316L and 304 in terms of acid resistance: it remains stable in dilute sulfuric acid, acetic acid, formic acid, and phosphoric acid of various concentrations at temperatures below 70°C.
Resistance to Chloride Corrosion
It exhibits resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking in seawater, brine, and chloride-rich industrial media.
Welding performance
With a low carbon equivalent, it does not require post-weld heat treatment after standard welding; the weld seam retains corrosion resistance comparable to that of the base material after passivation.
Stable Forming and Machining Properties
Suitable for cold bending, hot forging, cutting, deep drawing, and precision machining of complex parts.
why choose us
why choose us?
Custom Cutting: We offer profile cutting, beveling, and services to save you fabrication time.
Fast Logistics: Efficient shipping via break bulk or container to major ports worldwide (Rotterdam, Houston, Singapore, Dubai).
Competitive Pricing: Direct mill cooperation means no middlemen markups.
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FAQ
Q: What distinguishes 904L stainless steel from 316L?
A: 904L contains higher nickel, molybdenum and ultra-low carbon, delivering far superior resistance to strong acid, chloride and crevice corrosion compared to 316L.
Q: What product forms do you have in stock?
A: Ready stock includes steel plate, round bar, seamless pipe, flat bar and strip for quick delivery.
Q: What harsh environments suit 904L material?
A: It fits chemical pickling tanks, seawater desalination units, pharmaceutical reactors, waste water treatment and sulfuric acid processing equipment.
Q: Does 904L need special welding techniques?
A: Matching 904L welding filler metal must be used, and controlled heat input prevents intergranular corrosion after welding.
Q: Will 904L develop rust in salt spray conditions?
A: It resists salt fog and pitting corrosion much better than ordinary austenitic stainless steels under marine and corrosive atmosphere.
Q: Can custom machining and forging be done for special parts?
A: Custom forging, bending, slitting and precision machining are available according to customer technical drawings.
Q: How should 904L stainless steel be stored?
A: Store indoors in dry conditions, separate from carbon steel to avoid iron contamination and surface discoloration.
Q: What certification documents can be provided?
A: Complete original mill test certificates come with shipments, SGS third-party inspection reports can be arranged upon request.
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