Stainless Steel 1.4373
EN 1.4373 · UNS S20200 · AISI/SAE 202 · GB 12Cr18Mn9Ni5N, 1Cr18Mn8Ni5N
1.4373 (X12CrMnNiN18-9-5, AISI 202 / S20200) is a nitrogen-strengthened chromium-manganese austenitic stainless steel in which manganese and nitrogen replace part of the nickel used in 304.
Reference datasheet — 1.4373 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the Annealed condition
1.4373 tempers and conditions
1.4373 is supplied in 9 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 9 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
No.1 plate / hot-rolled bar | Heavy plate and hot-rolled bar condition for welded fabrication where surface finish is secondary. | 350 | 680 | 50 | 185 HB | 2.4 % IACS |
AnnealedDefault solution annealed (1050–1120 °C, water quenched); 2B / BA / 2D / No.1 finishes | Default stocked condition for sheet, coil, tube and bar; maximum ductility and corrosion resistance, non-magnetic. | 370 | 700 | 52 | 190 HB | — |
Lightly temper-rolled strip/sheet | Choose when slightly higher yield and flatter, stiffer sheet are needed with almost annealed formability. | 400 | 720 | 40 | 210 HB | 2.4 % IACS |
Cold rolled to ASTM A666 1/8-hard temper | Mild cold-rolled temper for panels and trim needing extra stiffness but still some bending. | 450 | 760 | 30 | 225 HB | 2.4 % IACS |
Quarter hard | Common structural temper for tube, trim and light brackets where 515 MPa minimum yield is specified. | 580 | 900 | 15 | 26 HRC | 2.4 % IACS |
bar and wire drawn after annealing | Pick for bar stock needing tighter tolerance, better surface and higher yield than annealed bar (fasteners, shafts). | 600 | 850 | 20 | 25 HRC | 2.4 % IACS |
Half hard | High-strength strip for clamps, springs-in-bending and structural sections; forming limited to gentle radii. | 820 | 1,070 | 12 | 32 HRC | 2.4 % IACS |
Three-quarter hard | Near-maximum strength strip for flat springs, shims and clips; essentially blanking/slitting only. | 990 | 1,240 | 8 | 37 HRC | 2.4 % IACS |
cold rolled to ASTM A666 full-hard temper | Maximum as-rolled strength for flat springs, straps and stamped hardware; no significant forming possible. | 1,030 | 1,320 | 5 | 41 HRC | 2.3 % IACS |
Supply forms, finishes and certifications
Ways 1.4373 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
Spring Temper Wire | Spring Temper | Supply form |
What is 1.4373?
1.4373 (X12CrMnNiN18-9-5, AISI 202 / S20200) is a nitrogen-strengthened chromium-manganese austenitic stainless steel in which manganese and nitrogen replace part of the nickel used in 304. It is chosen for cost-stable sheet, strip, tube, cold-drawn bar and spring wire, with tempers from annealed (370 MPa yield, 700 MPa tensile, 52 % elongation, 190 HB, 90 HRB) through full hard. Corrosion resistance rates 52 on our scale, so it tea-stains in chloride or outdoor service, and the higher carbon raises weld sensitization risk; 304/1.4301 is the nearest upgrade. 1.4373 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,400°C (2,552 °F). 1.4373 has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 50% of stainless steel grades. Elongation at break is 52% and the elastic modulus is 197 GPa (28.6 Msi).
What is 1.4373 used for?
- kitchen equipment
- industrial fasteners
- furniture tubing
- appliance panels
Advantages
- Ductile — tolerates forming and impact — 52%, better than 95% of stainless steel grades
- Forms and bends easily — 68/100, better than 75% of stainless steel grades
Limitations
- Needs corrosion protection — 52/100, worse than 76% of stainless steel grades
1.4373 properties
Typical room-temperature values for 1.4373-Annealed; bars are the position among stainless steel grades.
Physical3
1.4373 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical15
1.4373 has a yield strength of 370 MPa (53.7 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 50% of stainless steel grades. Elongation at break is 52% and the elastic modulus is 197 GPa (28.6 Msi).
Thermal6
1.4373 is rated for continuous service to 760°C (1,400 °F). It conducts heat at 16 W/m·K (9.24 BTU/hr·ft·°F), better than 58% of stainless steel grades. Thermal expansion is 16.8 µm/m·K (9.33 µin/in·°F).
Electrical3
1.4373 conducts electricity at 2.4 % IACS, better than 67% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (52/100), worse than 76% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4373 takes about 48 MJ of energy and emits 4.2 kg of CO₂ — less than 85% of stainless steel grades. Typical recycled content is 65%.
Manufacturability8
1.4373's machinability is fair (38/100, better than 63% of stainless steel grades); weldability good (65/100); formability good (68/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. 1.4373 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4373
Is 1.4373 easy to machine?
Gummy and strongly work-hardening — use rigid setups, sharp positive-rake carbide, heavy positive feed to cut under the hardened layer, and flood coolant; roughly 40 % of 1212 speed.
Can 1.4373 be welded?
Weldable by GTAW/GMAW/resistance methods with 308L or 309L filler; keep heat input low and interpass below ~150 °C, as the higher carbon and Mn make sensitization and hot cracking more likely than in 304.
Can 1.4373 be formed, bent or molded?
Deep drawable but with a high work-hardening rate — expect 30–50 % more press force than 304 and plan interstage anneals for severe draws; springback is substantial.
1.4373 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| CEN 10088 max 0.15 | ≤ 0.15 | 0.08 |
| Si | ≤ 1 | 0.5 |
| MnASTM S20200: 7.5–10.0 | 7.5 – 10.5 | 9 |
| P | ≤ 0.06 | 0.03 |
| SASTM S20200 allows 0.030 max | ≤ 0.02 | 0.01 |
| Cr | 17 – 19 | 18 |
| Ni | 4 – 6 | 5 |
| Naustenite stabiliser, raises strength | 0.05 – 0.25 | 0.15 |
| Fe | balance |
What surface finishes work on 1.4373?
Takes a bright mechanical or electropolished finish and PVD coating well; passivate after machining/welding and avoid carbon-steel contamination, since the lower PREN makes rust staining more likely outdoors.
Surface treatments FabDigit runs on stainless steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Organic Coating
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Stainless Steel 1.4373 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- S20200
- AISI / SAE
- 202
- EN / DIN / Werkstoff-Nr.
- X12CrMnNiN18-9-5
- GB (China)
- 12Cr18Mn9Ni5N1Cr18Mn8Ni5N
How much does 1.4373 cost?
1.4373 is a standard-cost stainless steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
1.4373 — frequently asked
What is 1.4373 used for?
1.4373 is typically used for kitchen equipment, industrial fasteners, furniture tubing and appliance panels. In short: low-nickel 304 substitute; cost-stable 2xx workhorse; formable but stain-prone.
What is the yield strength of 1.4373?
1.4373 has a typical yield strength of 370 MPa (53.7 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 50% of stainless steel grades. Strength varies by condition: see the 9 listed tempers.
Is 1.4373 easy to machine?
Not especially — machinability is rated fair (38/100, better than 63% of stainless steel grades). Gummy and strongly work-hardening — use rigid setups, sharp positive-rake carbide, heavy positive feed to cut under the hardened layer, and flood coolant; roughly 40 % of 1212 speed.
Can 1.4373 be welded?
Yes — weldability is rated good (65/100). Weldable by GTAW/GMAW/resistance methods with 308L or 309L filler; keep heat input low and interpass below ~150 °C, as the higher carbon and Mn make sensitization and hot cracking more likely than in 304.
What surface finishes work on 1.4373?
Takes a bright mechanical or electropolished finish and PVD coating well; passivate after machining/welding and avoid carbon-steel contamination, since the lower PREN makes rust staining more likely outdoors.
Can 1.4373 be formed, bent or molded?
Deep drawable but with a high work-hardening rate — expect 30–50 % more press force than 304 and plan interstage anneals for severe draws; springback is substantial.
What is the maximum service temperature of 1.4373?
1.4373 is rated for continuous use to about 760°C (1,400 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does 1.4373 cost?
1.4373 is a standard-cost stainless steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 10088-1/-2 Stainless steels — list and technical delivery conditions (X12CrMnNiN18-9-5, 1.4373) — CEN (2014)
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip (S20200) — ASTM International (2023)
- ASTM A666 — Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat Bar — ASTM International (2015)
- GB/T 20878 / GB/T 3280 — (12Cr18Mn9Ni5N) — SAC (2019)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.