317 Stainless Steel Bar
SUS317 and 317L is a molybdenum bearing stainless steel whose molybdenum content sits slightly above that of 316. Bar is produced hot rolled and cold drawn, in round, flat, square and hexagonal profiles, and supplied…
What This Product Is For
SUS317 and 317L is a molybdenum bearing stainless steel whose molybdenum content sits slightly above that of 316. Bar is produced hot rolled and cold drawn, in round, flat, square and hexagonal profiles, and supplied black, peeled, bright or polished. It is used for industrial transmission components and mechanical structural parts in petroleum and related process plant.
Key Benefits
- Molybdenum content slightly higher than 316, which improves resistance in pitting service
- Four bar profiles from one grade so a whole machined assembly can be sourced together
- Hot rolled and cold drawn routes cover both heavy and precision sections
- Four surface conditions from black through to polished
- Length from 0.3 m to 12 m or customised, which cuts machining offcuts
Who It Is For
- Machine shops turning acid service components
- Petroleum and chemical equipment manufacturers
- Buyers upgrading from 316 bar after pitting problems
- Distributors stocking molybdenum bearing bar profiles
Problems It Solves
- Pitting on 316 machined parts in phosphoric and acetic acid service
- Surface condition mismatch when bar arrives black instead of peeled or bright
- Waste from fixed 6 m lengths on short component runs
- Sourcing round, flat, square and hexagonal profiles from different mills
Application Scenarios
- Machined components for petroleum process equipment
- Mechanical structural parts in chemical plants
- Shafting and fittings exposed to acidic media
- Fastener blanks turned from hexagonal bar
Specifications
Every value below is taken from the published product data. Where a figure is not published it is left out rather than estimated.
| Grade | 317, SUS317, 317L |
|---|---|
| Type | Hot rolled and cold drawn |
| Round Bar Diameter | 1/4 inch to 16 inch |
| Square Bar Size | 15 x 15 mm to 300 x 300 mm |
| Length | 0.3 to 12 m or customised |
| Standard | ASTM A276, A564, A582, A484 |
| Surface Treatment | Black, peeled, bright, polished |
| Product Forms | Round bar, flat bar, square bar, hexagonal bar |
| Supply Status | Bright wire drawing, bright annealing |
Technical Features
- Molybdenum content slightly higher than 316 stainless steel
- Hot rolled and cold drawn production
- Round bar 1/4 inch to 16 inch and square bar 15 x 15 mm to 300 x 300 mm
- Available as round, flat, square and hexagonal bar
- Supply status includes bright wire drawing and bright annealing
Materials
- 317 and 317L molybdenum bearing austenitic stainless steel
Manufacturing Process
- Hot rolling
- Cold drawing
- Peeling and grinding
- Bright annealing
Quality Control
- Molybdenum content verified against the 317 specification
- Diameter and section measured against the ordered profile
- Surface condition checked as black, peeled, bright or polished
- Length confirmed against the cut list
Customisation Options
- Round, flat, square or hexagonal profile
- Length from 0.3 m to 12 m or customised
- Surface supplied black, peeled, bright or polished
Use Guide
- Order peeled or bright bar where the diameter is close to the finished size
- State the required length to avoid cutting waste, since 0.3 to 12 m is available
- Use hexagonal bar for fastener blanks and round bar for shafting
- Machine with rigid setups, as molybdenum bearing austenitic grades work harden
How It Compares With the Alternatives
| 316 stainless bar | 317 carries slightly more molybdenum than 316, which improves resistance in pitting service |
|---|---|
| 904L stainless bar | 904L adds far more nickel and copper for reducing acid duty, while 317 is the step directly above 316 |
| Hot rolled bar | Cold drawn bar holds a tighter size and a better surface, which reduces machining stock removal |
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View specifications →317 Stainless Steel Bar Questions
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How does 317 differ from 316
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Quote 317 Stainless Steel Bar
Send the size, wall or thickness, quantity and destination port. Certificates, packing and lead time are confirmed on the quotation.