441 Stainless Steel Bar Supplier Wholesale
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441 Stainless Steel Bar Supplier Wholesale | ASTM A276 441 Stainless Steel Rod Manufacturer
When selecting a supplier for 441 stainless steel bars, focusing solely on the lowest price is far from enough. For manufacturers of automotive exhaust systems, industrial furnaces, heat exchangers, and welded structural components, choosing the wrong material or supplier can lead to costly production delays, weld failures, and premature component replacement.
Unfortunately, many buyers only discover critical issues after production is already underway:
Material Substitution: The delivered material turns out to be Grade 430 rather than genuine 441 stainless steel.
Surface Defects: Unacceptable surface defects require unexpected secondary machining.
Dimensional Inaccuracy: Diameter tolerances exceed the allowable machining allowance.
Welding Failures: Sensitization or cracking occurs during the welding process.
Traceability Issues: Mill Test Certificates (MTC) do not match the heat numbers on the material.
GNEE is committed to resolving issues before they impact your business. With over 18 years of experience in stainless steel production and export, we supply ASTM A276-compliant 441 stainless steel bars to customers in more than 60 countries worldwide, backed by rigorous quality control, a comprehensive traceability system, and rapid global delivery services.
Why Choose 441 Stainless Steel Instead of 430 or 409?
As emission regulations become increasingly stringent and industrial equipment operating temperatures rise, traditional ferritic stainless steels struggle to meet the demands.
When you require a high-performance, dual-stabilized metal capable of withstanding high temperatures and rigorous welding conditions, choose 441 stainless steel over grades 430 or 409. Containing approximately 18% chromium, this material offers excellent corrosion resistance and incorporates titanium and niobium to prevent intergranular corrosion in welded areas; it outperforms grade 409 in high-temperature strength and grade 430 in weld durability.
How is the quality of 441 stainless steel ensured?
Will Type 441 stainless steel bars crack after welding?
If the welding process is performed properly, Type 441 stainless steel bars typically do not crack after welding. The 441 stainless steel bars supplied by GNEE generally do not crack after welding under normal conditions. Thanks to the addition of titanium and niobium for stabilization, the material resists intergranular corrosion and sensitization in the weld zone, which eliminates the need for post-weld heat treatment. However, grain growth can still lead to a loss of toughness in the heat-affected zone.
What is the dimensional tolerance for 441 stainless steel bars?
The dimensional tolerance for 441 stainless steel bars is dictated by the manufacturing method (hot-rolled versus cold-finished) and follows standard global specifications such as ASTM A484 or ISO 286-2 (h-tolerances).
| Specified Size Range (mm) | h8 Tolerance (mm) | h9 Tolerance (mm) | h11 Tolerance (mm) |
|---|---|---|---|
| Over 3 to 6 | +0 / -0.018 | +0 / -0.030 | +0 / -0.075 |
| Over 6 to 10 | +0 / -0.022 | +0 / -0.036 | +0 / -0.090 |
| Over 10 to 18 | +0 / -0.027 | +0 / -0.043 | +0 / -0.110 |
| Over 18 to 30 | +0 / -0.033 | +0 / -0.052 | +0 / -0.130 |
| Over 30 to 50 | +0 / -0.039 | +0 / -0.062 | +0 / -0.160 |
| Over 50 to 80 | +0 / -0.046 | +0 / -0.074 | +0 / -0.190 |
Hot-Rolled Round Bars (ASTM A484 / A484M)
| Specified Size Range (inches) | Over Tolerance (in.) | Under Tolerance (in.) | Max Out-of-Round (in.) |
|---|---|---|---|
| 5/16 to 7/16, incl. | +0.006 | -0.006 | 0.009 |
| Over 7/16 to 5/8, incl. | +0.007 | -0.007 | 0.010 |
| Over 5/8 to 7/8, incl. | +0.008 | -0.008 | 0.012 |
| Over 7/8 to 1, incl. | +0.009 | -0.009 | 0.013 |
| Over 1 to 1-1/8, incl. | +0.010 | -0.010 | 0.015 |
| Over 1-1/4 to 1-3/8, incl. | +0.012 | -0.012 | 0.018 |
| Over 1-1/2 to 2, incl. | +1/64 (+0.0156) | -1/64 (-0.0156) | 0.023 |
Do you have stock available? What is your delivery speed?
GNEE maintains stock of commonly used specifications and coordinates multiple production lines, enabling us to respond quickly to urgent procurement needs.
Standard specification products can usually be shipped within 7 to 15 working days;
Custom-specification products depend on specific parameters and order volume, but are generally completed within 15 to 25 days.
Can you provide MTC and PMI reports?
We verify the authenticity of the materials prior to every shipment. Each batch of 441 stainless steel bars comes with an EN 10204 3.1 Material Test Certificate (MTC) detailing the heat number, chemical composition, and mechanical properties. Additionally, we can provide various other documents-such as chemical analysis reports, mechanical property test reports, dimensional inspection records, and third-party inspection reports from SGS, BV, or TÜV-to meet project requirements.
Do you offer OEM machining and custom processing services?
In addition to supplying raw materials, GNEE provides a comprehensive range of value-added processing services, including precision cutting, peeling, centerless grinding, polishing, chamfering, CNC machining, and custom packaging based on customer drawings or technical specifications. We manufacture stainless steel bars with diameters ranging from 5 mm to 300 mm, available in lengths up to 6,000 mm or produced to specific requirements. Backed by advanced processing equipment and an experienced engineering team, we help customers minimize secondary processing, reduce material waste, and enhance production efficiency.
441 Grade Stainless Steel bar price list
Prices for bars vary significantly based on the processing method (Cold Drawn vs. Hot Rolled). These prices are indicative.
| Bar Type | Specification | Finish | Price Range (USD/MT) |
| Round Bar | 10mm – 50mm | Cold Drawn / Bright | $1,850 – $2,150 |
| Round Bar | 60mm – 200mm | Hot Rolled / Black | $1,750 – $1,950 |
| Hexagonal Bar | S17 – S41 (Metric) | Bright / Polished | $1,950 – $2,250 |
| Flat Bar | 5mm x 40mm (Typical) | HRAP | $1,800 – $2,050 |
When procuring or specifying Grade 441 bars, please provide the following information: shape and dimensions (e.g., round bar diameter, flat bar dimensions), intended use or operating temperature, and required surface finish or standard (such as ASTM A276).
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ASTM A276 441 Stainless Steel Bar Specifications
| Item | Specification |
|---|---|
| Product Name | ASTM A276 441 Stainless Steel Bar |
| Grade | 441 / UNS S44100 / EN 1.4509 |
| Standard | ASTM A276, ASTM A479, ASTM A582 (Optional) |
| Shape | Round Bar, Square Bar, Flat Bar, Hexagonal Bar |
| Diameter | 5 mm – 300 mm |
| Width | 10 mm – 300 mm |
| Thickness | 3 mm – 150 mm |
| Length | 1,000 mm – 6,000 mm or Customized |
| Manufacturing Process | Hot Rolled, Cold Drawn, Peeled, Centerless Ground |
| Surface Finish | Black, Bright, Peeled, Polished, Ground |
| Diameter Tolerance | h9, h10, h11 or Customized |
| End Finish | Plain End, Chamfered End, Saw Cut |
| Heat Treatment | Annealed |
| Inspection | PMI Test, UT Test, Chemical Analysis, Mechanical Testing, Dimensional Inspection |
| Certificate | EN 10204 3.1 / 3.2, Mill Test Certificate (MTC) |
| Third-Party Inspection | SGS, BV, TÜV, DNV Available |
| Packaging | Waterproof Paper, PVC Film, Wooden Cases, Steel Strapping, Export Seaworthy Packing |
| Delivery Time | 7–15 Days for Stock; 15–25 Days for Customized Orders |
| MOQ | 1 Ton (Negotiable) |
| Trade Terms | EXW, FOB, CFR, CIF, DDP |
| Payment Terms | T/T, L/C at Sight |
Packaging Methods by Bar Type
| Bar Type | Surface Finish | Recommended Packaging |
| Small Diameter Round Bar (< 20mm) | Bright / Polished / Cold Drawn | Plastic sleeves for each bar + Woven bags + Bundled with steel straps + Wooden Case. |
| Medium Diameter Bar (20mm - 80mm) | Bright / Peeled / Ground | Wrapped in waterproof paper/plastic film + Woven bags + Steel strapping with lifting belts. |
| Large Diameter Bar (> 80mm) | Black / Hot Rolled / Peeled | Bundled with steel straps + Protective end caps + Shipping tags. (Usually no wooden box needed unless requested). |
| Hexagonal / Square Bar | Cold Drawn / Bright | Bundle wrapped with HDPE plastic + Edge protectors + Wooden crates to prevent corner damage. |
