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316 Stainless Steel Round Bar is a molybdenum-bearing austenitic stainless steel known for its superior corrosion resistance in chloride-rich and chemically aggressive environments. It offers excellent strength, weldability, and fabrication performance for demanding industrial applications.
Widely used in marine equipment, chemical processing systems, food production facilities, and engineering projects requiring enhanced corrosion protection.
316 stainless steel round bar (also known as AISI 316 stainless rod, UNS S31600 round bar, or EN 1.4401 marine-grade steel rod) is a molybdenum-bearing austenitic stainless steel engineered for exceptional pitting corrosion resistance in chloride-rich environments, seawater, and aggressive chemical solutions. Containing 2.0% to 3.0% molybdenum, 316 stainless steel round bars offer significantly higher creep, stress-to-rupture, and tensile strength at elevated temperatures compared to standard 304 stainless steel.
At XQJ Metal, we manufacture and export precision-engineered 316 stainless steel round bars in cold drawn, centerless ground, hot rolled, and polished conditions. Produced in strict accordance with ASTM A276, ASTM A479, and EN 10088-3 standards, our marine-grade stainless rods feature tight diameter tolerances, exceptional straightness, and flawless surface finishes for high-speed CNC machining and critical structural shafting.
| Parameter | Standard Value / Specification |
| Material Grade | AISI 316 / UNS S31600 / EN 1.4401 / SUS 316 |
| Chemical Composition | Cr: 16.0–18.0%, Ni: 10.0–14.0%, Mo: 2.0–3.0%, C: ≤ 0.08% |
| Mechanical Properties | Tensile Strength ≥ 515 MPa, Yield Strength ≥ 205 MPa, Elongation ≥ 40% |
| Diameter Range | 3.0mm – 350mm (1/8″ to 14″) |
| Surface Finishes | Cold Drawn (h9/h10), Centerless Ground (h8), Hot Rolled Peeled, Polished |
| Tempers / Conditions | Solution Annealed (Soft), Cold Worked (High Strength) |
| International Standards | ASTM A276, ASTM A479, ASTM A582, EN 10088-3, JIS G4303, ISO 9001 |
Q1: What is the main difference between 304 and 316 stainless steel round bars?
A: The key distinction is the addition of 2% to 3% molybdenum in 316 stainless steel. This alloy element dramatically increases resistance to pitting and crevice corrosion in chloride environments like seawater, de-icing salts, and harsh industrial chemicals, making 316 superior to 304 for marine applications.
Q2: Can 316 stainless steel round bars be welded and machined easily?
A: Yes, 316 stainless steel demonstrates excellent weldability using all standard fusion methods. For machining, centerless ground or cold drawn 316 bars provide excellent dimensional stability and smooth chip formation when appropriate speeds, feeds, and carbide tooling are applied.
Q3: What is your Minimum Order Quantity (MOQ) for custom precision ground 316 round bars?
A: Our standard MOQ for custom diameter centerless ground bars is 300 kg. Standard warehouse stock sizes can be shipped in smaller trial quantities immediately.
If you require specific bar tolerances, custom cut lengths, or certified technical datasheets, explore our full range of Stainless Steel Bar Products or Contact Our Sales Engineering Team directly for a fast factory quotation.
Our materials support a wide range of construction and infrastructure projects
316 stainless steel round bar contains molybdenum, providing better resistance to chloride-induced corrosion than 304 stainless steel round bar. The appropriate grade should be selected according to the service environment, corrosion requirements, and application conditions.
316 stainless steel round bar is widely used for marine hardware, offshore equipment, and coastal applications because of its improved resistance to chloride corrosion. Material selection should still consider the specific service conditions and environmental exposure.
Yes. 316 stainless steel round bar is widely used for precision-machined parts such as shafts, valves, fittings, and pump components where both corrosion resistance and mechanical performance are required.
It offers excellent resistance to seawater corrosion and maintains strength in humid and salt-rich conditions.
No. Strength is achieved through strain hardening rather than heat treatment.
Yes. It provides excellent weldability for structural fabrication.
Yes, it is commonly applied in tanks and pressure equipment.
Yes. It provides higher strength compared with most non-heat-treated aluminum alloys.
Yes. Thickness, width and temper can be adjusted based on project demand.
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