Stainless steel / UNS S20200
202 is a chromium-manganese-nickel austenitic stainless steel in which manganese and nitrogen replace part of the nickel, giving strength above 304 at lower alloy cost for indoor and mildly corrosive service.
- UNS S20200
- W.Nr. 1.4373
- Spec ASTM A240
- Density 7.8 g/cm³
Also known as / equivalents
| System | Designation |
|---|---|
| UNS | S20200 |
| W.Nr. | 1.4373 |
| EN | X12CrMnNiN18-9-5 |
| JIS | SUS202 |
| Also known as | AISI 202, 1.4373, SUS202 |
Chemical composition
| Element | Min % | Max % |
|---|---|---|
| C | — | 0.15 |
| Mn | 7.5 | 10.0 |
| P | — | 0.060 |
| S | — | 0.030 |
| Si | — | 1.00 |
| Cr | 17.0 | 19.0 |
| Ni | 4.0 | 6.0 |
| N | — | 0.25 |
| Fe | Bal. | — |
Mechanical properties
| Property | Value |
|---|---|
| Tensile strength (min) | 620 MPa (89.9 ksi) |
| Yield strength, 0.2% offset (min) | 260 MPa (37.7 ksi) |
| Elongation in 50 mm (min) | 40 % |
| Hardness | 241 HB max |
Physical properties
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.8 g/cm³ | 0.282 lb/in³ |
| Magnetic response | Non-magnetic when annealed; may become slightly magnetic after cold work | — |
Available forms & specifications
| Form | Specification | Size range |
|---|---|---|
| Sheets, plates & coils | ASTM A240 / ASME SA240 | 0.3 mm – 6 mm |
| Seamless & welded pipe | ASTM A312 / ASME SA312 | 1/8" – 24" NB |
| Tubes | ASTM A213, A249, A269 | 1/8" – 24" NB |
| Bars & rods | ASTM A276, A479 | 3 mm – 500 mm |
| Flanges & forgings | ASTM A182 / ASME SA182 | 1/2" – 48" NB (larger on request) |
| Buttweld fittings | ASTM A403 / ASME SA403 | 1/2" – 48" NB |
| Fasteners | ASTM A193 / A194, F593 / F594 | M3 – M56 |
Corrosion & temperature resistance
Corrosion resistance rises with chromium, molybdenum and nitrogen: 304 handles general atmospheric and food-contact service, 316/317 add resistance to chlorides and pitting, 904L handles strong reducing acids, and stabilised 321/347 resist intergranular attack after welding or high-temperature exposure.
Applications
SS 202: Kitchenware, appliances, trim. Process piping, tanks and vessels, heat exchangers, food, dairy and pharmaceutical equipment, architectural work and general engineering.
SS 202 vs SS 304
| SS 202 | SS 304 | |
|---|---|---|
| UNS | S20200 | S30400 |
| Key property | Low-nickel austenitic, higher strength than 304 | General-purpose 18/8 austenitic |
| Typical use | Kitchenware, appliances, trim | Food, dairy, tanks, piping, architecture |
| Cr (wt %) | 17.0–19.0 | 17.5–19.5 |
| Ni (wt %) | 4.0–6.0 | 8.0–10.5 |
| Mo (wt %) | — | — |
| C (wt %) | ≤ 0.15 | ≤ 0.07 |
| Tensile / yield (min, MPa) | 620 / 260 | 515 / 205 |
Frequently asked questions
What is the UNS number of SS 202?
SS 202 is designated UNS S20200 (W.Nr. 1.4373, EN X12CrMnNiN18-9-5).
What is SS 202 used for?
Low-nickel austenitic, higher strength than 304. Typical uses: kitchenware, appliances, trim.
Is SS 202 magnetic?
Non-magnetic when annealed; may become slightly magnetic after cold work.
In which forms can I buy SS 202 from Rajkamal Metals?
Coils & Strips, Sheets & Plates, Pipes & Tubes, Round Bars & Rods, Structural Sections, Flanges, Buttweld Fittings, Socket Weld & Threaded Fittings, Fasteners, Ferrule / Instrumentation Fittings, Dairy Fittings, Dish Ends, SS Tanks, Custom Orders. Sizes as per standard; other sizes on request.
Do you supply a Mill Test Certificate with SS 202?
Yes. Actual values are given in the Mill Test Certificate (EN 10204 3.1) supplied with each order.
What is the difference between SS 202 and SS 304?
SS 202: low-nickel austenitic, higher strength than 304. SS 304: general-purpose 18/8 austenitic. See the comparison table on this page.
Last updated: 30 October 2026. Grade names identify the supply range; designations are not engineering equivalents. Availability, make, origin and documentation are confirmed at quotation.
Request a quote
Need SS 202?
Send the grade, form, size, quantity and destination. Price on request — every offer is prepared against your specification.