316 Stainless Steel Bar for Machining, Marine Hardware and Corrosion-Critical Components

Parts working near the coast, in damp factories or chemical workshops can't rely on ordinary stainless steel to hold up long-term. That's why most manufacturers pick 316 stainless steel bar for machined workpieces that need solid anti-corrosion performance and dependable service life.

316 stainless steel contains 2 to 3 percent molybdenum, a key element that lets it stand up to chloride corrosion far better than regular 304. This performance gap matters a lot for shafts, valve accessories, marine hardware and precision machined components - it directly determines how many years your parts can stay in service without premature wear or rust.

Product Specifications

Item

Details

Standard

ASTM A276 / ASTM A479

Grade

316 / UNS S31600

Shape

Round, Flat, Square, Hexagonal

Diameter

6 mm – 500 mm

Length

1000 mm – 6000 mm

Surface Condition

Black, Peeled, Bright, Ground

Heat Treatment

Solution Annealed

Processing Service

Cutting, Turning, CNC Machining

Trade Terms

FOB, CFR, CIF

Payment Terms

T/T, L/C

Property

Value

Chromium (Cr)

16.0 – 18.0%

Nickel (Ni)

10.0 – 14.0%

Molybdenum (Mo)

2.0 – 3.0%

Carbon (C)

≤ 0.08%

Tensile Strength

≥ 515 MPa

Yield Strength

≥ 205 MPa

Elongation

≥ 40%

Hardness

≤ 95 HRB

What Buyers Usually Care About

Corrosion Resistance in Chloride Environments

One of the biggest reasons people step up from 304 to 316 is salt-whether it's saltwater, coastal air, or chloride-laden chemicals. The molybdenum in 316 helps it resist pitting, which is exactly what you need when rust spots could become a problem.

Reliable Material for CNC Machining

316 bar is a favorite for machined components, and it's not hard to see why. If you go with bright-drawn or peeled bar, you're getting better dimensional consistency, which means less time dialing in your tooling before you start cutting.

Multiple Surface Conditions Available

Not every job calls for the same finish. Ground bar tends to be the choice for precision shaft work, while black bar is more common when the material is headed for further machining or forging. It's all about matching the supply condition to what you're actually making.

Suitable for Long-Service Equipment

For things like valves, pumps, marine hardware, and chemical equipment, the real cost isn't the material-it's the downtime and replacement labor if something fails. That's why a lot of buyers stick with 316. It's proven itself in tough environments, and that peace of mind is worth the extra upfront cost.

Typical Applications

316 stainless steel bar simply holds up better in harsh environments. That's why it's a go-to for so many critical applications across different industries.