Titanium preferentially combines with carbon and nitrogen, helping retain intergranular corrosion resistance after relevant thermal exposure.
Global Steel Supply & Processing
UNS S32100 · Cr 17–19% · Ni 9–12% · Ti stabilized
Your order is quoted against the grade, product standard, dimensions, finish and inspection scope.
| Grade | 321 Stainless Steel / UNS S32100 |
|---|---|
| Standard | ASTM A240/A240M-26 (or contract-specified edition) |
| Material Type | Titanium-stabilized austenitic stainless steel |
| General Requirements | ASTM A480/A480M where applicable |
| Supply Form | Flat plate and sheet; cut blanks by enquiry |
| Plate Dimensions | Thickness × width × length from your purchase schedule |
| Surface | No. 1 / 1D, 2B and other finishes according to gauge and order |
| Delivery Condition | Annealed; confirm exact condition with RFQ |
| Inspection | MTC, heat traceability and agreed test requirements |
Include the following information for a grade-specific quotation.
321 combines chromium–nickel austenitic steel with titanium stabilization for specified fabrication and service conditions.
Titanium preferentially combines with carbon and nitrogen, helping retain intergranular corrosion resistance after relevant thermal exposure.
Request grade 321 for equipment sections with welded joints, heat-affected zones and fabrication documentation requirements.
Share the service temperature, atmosphere and loading cycle so the material specification can be reviewed with your purchase order.
UNS S32100 chemical range for your incoming material specification. Values are mass percentages.
| Element | Content | Element | Content |
|---|---|---|---|
| Chromium (Cr) | 17.0–19.0% | Nickel (Ni) | 9.0–12.0% |
| Titanium (Ti) | ≥5 × (C + N); ≤0.70% | Carbon (C) | ≤0.08% |
| Manganese (Mn) | ≤2.00% | Silicon (Si) | ≤0.75% |
| Nitrogen (N) | ≤0.10% | Phosphorus (P) | ≤0.045% |
| Sulfur (S) | ≤0.030% | Iron (Fe) | Balance |
Material data reference: ATI 321 UNS S32100 plate chemistry. Specify the required ASTM edition and verify final heat analysis through the MTC.
Published minimum properties below refer to ASTM A240 annealed plate at room temperature.
| Property | Annealed plate reference |
|---|---|
| 0.2% Offset Yield Strength | ≥205 MPa (30 ksi) |
| Tensile Strength | ≥515 MPa (75 ksi) |
| Elongation | ≥40% (50.8 mm / 2 in reference) |
| Plate Hardness | ≤217 HB (published plate reference) |
| Nominal Plate Density | 8.03 g/cm³ (8,030 kg/m³) |
Include the test method, plate thickness, delivery condition and certificate format in the RFQ. We will confirm the applicable standard requirements and inspection scope for your order.
Use the specified surface condition and edge details in your purchase schedule.
Hot-rolled annealed and descaled plate surface.
Flatness, nominal gauge and finished edge requirement.
Specify 2B or another finish where that form is available.
Procure grade 321 for specified welded equipment and assemblies exposed to relevant thermal service conditions.
Industrial ductwork, hot-gas enclosures and fabricated duct panels.
Thermally cycled fabricated assemblies requiring grade-controlled plate.
Heat-related housings, covers and welded auxiliary components.
Specified trays, shields and fabricated furnace hardware.
Welded industrial assemblies with defined operating and inspection criteria.
Heat-exposed equipment supports and fabricated covers.
Have a fabrication drawing or thermal service specification? Include it with your plate enquiry.
Compare the purpose of each alloying approach with your operating temperature, environment and fabrication requirements.
| Material | Grade characteristic | Typical purchasing consideration | Details |
|---|---|---|---|
| 321 / S32100 | Ti-stabilized 17–19% Cr, 9–12% Ni | Welded components and specified thermal exposures | Current page |
| 304 / S30400 | General chromium–nickel austenitic steel | General fabrication and industrial equipment | 304 Plate → |
| 304L / S30403 | Low-carbon austenitic steel | Welding-intensive general fabrication | 304L Plate → |
| 310S / S31008 | Higher chromium–nickel alloy | Selected high-temperature oxidation service | 310S Plate → |
| 316L / S31603 | Mo-bearing low-carbon stainless steel | Welded equipment with specified corrosion exposure | 316L Plate → |
Each grade follows its own specified chemical and mechanical requirements. Confirm suitability against the process medium, fabrication route and design code.
Large-scale manufacturing and supply coordination support your steel purchasing schedule.
8 million metric tons of actual annual production across our company’s steel range.
1 million metric tons of regular steel inventory company-wide, with grade-specific availability confirmed per RFQ.
Specify UNS S32100, plate finish, MTC and heat identification for your order.
Align your packaging, shipment lots, destination and inspection requirements in one quotation.
Share the 321 grade, dimensions, surface condition, quantity and delivery target. We will confirm supply availability, order arrangements and shipment plans against your specification.
Request the applicable heat-analysis results, mechanical test records, surface inspection, dimensional checks and third-party inspection conditions in the RFQ.
Include your drawing and tolerances when the purchase requires finished blanks.
Cut outlines and blanks according to plate thickness and agreed drawing requirements.
Profile cutting options for specified stainless plate thicknesses.
Finished plate dimensions, hole position and batch marking by enquiry.
Attach drawings and finished-size details to your grade 321 purchase request.
Estimate the theoretical tonnage of your flat-plate order using 8,030 kg/m³ nominal plate density.
Weight is a geometric estimate. Final shipment mass follows the agreed dimensions and weighing basis.
Send a list of thicknesses, finish, dimensions and quantities for consolidated 321 plate pricing.
Specify surface protection, bundle handling, shipment quantity and destination. Packing materials and lot identification are confirmed with your order.
Explore grade-specific pages for your multi-material purchasing list.
Send UNS S32100, plate dimensions, finish, tonnage, required MTC documents and shipment destination.
The published S32100 plate chemistry specifies titanium at least five times the combined carbon and nitrogen content, with a maximum of 0.70%.
Include your welding or fabrication drawing, working temperature, process atmosphere, delivery condition and applicable acceptance criteria.
Add the finished-piece schedule, material certificate needs and inspection requirements to the same RFQ.
Send your required grade, dimensions, quantity and destination. Our team will review the inquiry.