Grade dossier
316Ti Stainless Steel for Stabilized Elevated-Temperature Service
A titanium-stabilized 316-family grade used where resistance to sensitization and elevated-temperature exposure are important, with product form and stabilization treatment stated.
Identity before substitution
Define the grade, product and condition together
A familiar grade name is not a complete purchase specification. Product form, controlling standard, dimensions, condition, finish, certification and service environment determine whether the delivered material is suitable.
Composition control
ASTM A240/A240M flat-product chemistry
Limits are not heat analysis targets
The table summarizes grade limits commonly used for plate, sheet and strip. Pipe, tube, bar, forgings and cast products can be governed by different specifications. Always place the product standard and edition on the purchase order.
| C | 0.08 max |
|---|---|
| Mn | 2.00 max |
| Si | 0.75 max |
| P | 0.045 max |
| S | 0.030 max |
| Cr | 16.00-18.00 |
| Ni | 10.00-14.00 |
| Mo | 2.00-3.00 |
| N | 0.10 max |
| Ti | 5×(C+N) min; 0.70 max |
Properties with context
Minimums, typical indicators and delivered condition
Specified annealed flat-product values
| Tensile strength | 515 MPa min |
|---|---|
| 0.2% yield strength | 205 MPa min |
| Elongation | 40% min |
| Hardness | 95 HRBW max |
Selection indicators
| Density | about 8.0 g/cm3 |
|---|---|
| Stabilization | Titanium reduces chromium-carbide sensitization risk |
| Corrosion position | Similar family to 316; not a universal chloride solution |
| Surface note | Titanium inclusions can limit high-cosmetic polishing |
Values depend on product form, thickness, test orientation, condition and governing edition. Use the mill test certificate and the purchase specification for acceptance, not a web table alone.
Selection boundary
Where 316Ti belongs and where to escalate
Grade selection is an environmental decision, not a popularity contest. Review the complete medium, temperature, geometry, fabrication, cleaning and inspection requirements.
Good reasons to evaluate it
Elevated-temperature process equipment
Welded pressure components where stabilized material is specified
Exhaust and thermal-cycling assemblies
Projects requiring S31635 or EN 1.4571 certification
Reasons to stop and review
Treating 316Ti and 316L as automatically interchangeable
Assuming stabilization removes all weld or corrosion controls
High-polish cosmetic service without surface trials
Ordering only as “316 stabilized”
Fabrication route
Protect properties through cutting, forming and welding
Specify the exact product standard and stabilization requirements.
Qualify weld filler, heat input and post-weld condition.
Review surface finish if titanium streaking or inclusions matter.
Use temperature-dependent data for elevated-temperature design.
Supply definition
Product form changes the applicable requirements
Do not send an RFQ that names only the grade. State form, governing standard, dimensions, tolerances, finish, edge or end condition, quantity, certification and inspection.
Cold- and hot-rolled coil, sheet and plate
Quarto plate
Bar and long products under applicable standards
Tube, pipe, fittings and pressure components under their own specifications
Certificate checkpoint
Request heat identity, chemical analysis, mechanical results and compliance to the exact product specification. Add PMI, corrosion testing or supplementary examination only when the application requires it.
Interactive selection check
Test 316Ti against the controlling question
Procurement FAQ
Questions to close before placing the order
Is 316Ti stainless steel magnetic?
Magnetic response depends on microstructure and delivered condition.
Can 316Ti replace another grade?
Only after checking the governing standard, composition, mechanical properties, corrosion exposure, fabrication route and certification. A commercial name is not a substitution approval.
Does the table apply to every product form?
Not automatically. The values shown use flat-product requirements as a reference. Other forms can use different product standards, dimensions and tests.
What should a 316Ti RFQ include?
Product form, standard and edition, UNS or EN designation, dimensions, tolerances, finish, quantity, service, fabrication, certificate and inspection requirements.
Sources, scope and RFQ
Use traceable grade data, then specify the actual product
ASTM A240/A240M requirements for UNS S31635 flat product
Outokumpu Supra 316Ti/4571 official grade guidance
Outokumpu long-product composition and identity table
Applicable pressure-equipment product standard and design code