AISI 904L stianless steel round bar Suppliers
As a leading manufacturer of 904L stainless steel round bars, GNEE specializes in producing a full range of ASTM A276 / ASME SA276 904L products, including round bars, rods, plates, flat bars, and hex bars. 904L is a high‑alloy austenitic stainless steel (UNS N08904) renowned for its exceptional corrosion resistance, high nickel, chromium, molybdenum, and copper content. We supply bars in both hot‑rolled and cold‑drawn forms, with various surface finishes available, including bright surface, delivering excellent weldability, formability, mechanical strength, and durability. Although its cost is higher than that of standard grades such as 316L, the material's superior performance makes it ideal for demanding applications. UNS N08904 hex bars are widely used in manifolds, flanges, valves, storage tanks, and heat exchangers, while 904L flat bars are suitable for structural engineering, construction, hardware components, bolts, nuts, kitchenware, and other high‑requirement industrial parts. We also offer customized production to meet specific standards and application needs, ensuring reliable solutions for clients across diverse industries.
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Specification
SS Grade 904L Round Bar Condition
| H&T | Hardened and tempered. |
| ANN | Annealed |
| PH | Precipitation hardened. |
Sizes of ASTM B649 UNS N08904 Rod
| Sizes (milimeter) | 3 to 75 | 10 to 75 | 40 to 150 | 20 to 50 |
|---|---|---|---|---|
| Sizes (inches) | 1/8" to 3" | 5/6" to 2.50" | 1.50" to 6" | 3/4" to 2" |
| ISO Tolerance | h8 - h9 - h10 - h11 | h8 - h9 - h10 - h11 | h11 - DIN 1013 | h9 - h10 - h11 |
Tolerance of Precision 904L Stainless Steel Round Bar (BS 970-3)
| Precision Stainless Steel Uns N08904 Round Bar Tolerances | ||||
|---|---|---|---|---|
| Section | Size, diameter |
Permitted overall variation | ||
| Class A | Class B | Class C | ||
| mm | mm | mm | mm | |
| Round | ≧ 6 <75 | 0.05 | 0.025 | 0.013 |
Chemical Composition of SS UNS N08904
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| SS 904L | 0.020 max | 2 max | 1 max | 0.040 max | 0.030 max | 19.0-23.0 | 4.0-5.0 max | 23.00 – 28.00 | 1.0-2.0 |
SS UNS N08904 Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35% |
We offer: stock sizes of sheet and slab, stock lengths of round bars, custom-length sheet and slab, custom-length round bars, cold forming of sheet and slab and round bars, and any other necessary processing services. For any questions, please click the link below to contact us!
ASTM A276 Type 904L Cold Drawn Round Bar Manufacturer
All sheets undergo pickling and passivation treatments to form a uniform protective film, are 100% visually inspected to ensure freedom from scratches, pits, and other surface defects, and are verified through mechanical property testing to guarantee processing reliability.
Highest quality GNEE packaging and shipping
We utilize a multi-layer protection and customized securing high-end packaging solution:
The inner layer tightly wraps each bar with waterproof and rust-proof paper.
The middle layer uses PVC/PE shrink film or anti-rust film to enhance moisture resistance and scratch protection.
The outer layer uses solid wood pallets selected according to the diameter and length of the bars.
Each pallet is clearly labeled (material, specifications, batch number, and destination) and includes instructions for applying rust inhibitor or a desiccant pack.
Delivery Time: If the customer has no special requirements on the delivery date, the normal delivery time is 7-15 working days.
Customer Visit
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