Stainless Steel 1.4311
EN 1.4311 · UNS S30453 · AISI/SAE 304LN · JIS SUS304LN · GB 022Cr19Ni10N
1.4311 (X2CrNiN18-10, 304LN, S30453, SUS304LN) is a low-carbon 18/10 austenitic stainless with controlled nitrogen, which raises yield strength by solid solution without reintroducing sensitization risk.
Reference datasheet — 1.4311 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
1.4311 tempers and conditions
1.4311 is supplied in 7 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault solution annealed (1020–1120 °C, water quenched) | Standard supply condition for plate, sheet, bar, pipe and forgings; maximum ductility and corrosion resistance. | 320 | 620 | 50 | 170 HB | — |
autogenous / matching-filler weld metal and HAZ | Property set for weld joints made with 308L/308LN filler and left un-annealed; low C + N avoids sensitisation. | 330 | 580 | 38 | 185 HB | 2.4 % IACS |
Cold drawn | Bar and wire with tight tolerance and raised strength for shafts, fasteners and machined parts. | 520 | 750 | 28 | 20 HRC | 2.3 % IACS |
Quarter hard | Light temper rolling for structural sheet and strip needing higher yield with some bendability. | 600 | 900 | 14 | 25 HRC | 2.3 % IACS |
Half hard | Medium temper for springy clips, straps and weight-saving structural strip. | 820 | 1,080 | 9 | 32 HRC | 2.3 % IACS |
Three-quarter hard | High-strength strip where only simple flat forming or shearing follows. | 910 | 1,180 | 7 | 36 HRC | 2.3 % IACS |
Full hard | Maximum strength strip/foil for springs, shims and flat stampings; very limited ductility. | 1,020 | 1,320 | 5 | 41 HRC | 2.3 % IACS |
Supply forms, finishes and certifications
Ways 1.4311 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
2B | Cold rolled, annealed, pickled, skin passed sheet | Surface finish |
HRAP | HRAP | Surface finish |
What is 1.4311?
1.4311 (X2CrNiN18-10, 304LN, S30453, SUS304LN) is a low-carbon 18/10 austenitic stainless with controlled nitrogen, which raises yield strength by solid solution without reintroducing sensitization risk. It is used for welded pressure and cryogenic equipment in annealed, HRAP, 2B, cold-drawn and 1/4H–FH strip conditions; annealed material gives 320 MPa yield, 620 MPa tensile, 50 % elongation and 170 HB (86 HRB), with service to 700 °C. Nitrogen raises press loads and lowers machinability relative to 1.4307, and chloride pitting resistance (score 58) still calls for a molybdenum grade such as 1.4404. 1.4311 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F). 1.4311 has a yield strength of 320 MPa (46.4 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 60% of stainless steel grades. Elongation at break is 50% and the elastic modulus is 200 GPa (29 Msi).
What is 1.4311 used for?
- pressure vessels
- cryogenic equipment
- structural components requiring higher strength than 304L
Advantages
- Tough — resists crack growth — 220 MPa·√m (200.2 ksi·√in), better than 97% of stainless steel grades
- Readily welded — 90/100, better than 95% of stainless steel grades
- Forms and bends easily — 85/100, better than 95% of stainless steel grades
- Ductile — tolerates forming and impact — 50%, better than 90% of stainless steel grades
- Polishes to a fine finish — 80/100, better than 89% of stainless steel grades
1.4311 properties
Typical room-temperature values for 1.4311-Annealed; bars are the position among stainless steel grades.
Physical3
1.4311 has a density of 7.9 g/cm³ (0.285 lb/in³), heavier than 68% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical16
1.4311 has a yield strength of 320 MPa (46.4 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 60% of stainless steel grades. Elongation at break is 50% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1.4311 is rated for continuous service to 700°C (1,292 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 59% of stainless steel grades. Thermal expansion is 16 µm/m·K (8.89 µin/in·°F).
Electrical3
1.4311 conducts electricity at 2.4 % IACS, better than 67% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 62% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4311 takes about 57 MJ of energy and emits 5.4 kg of CO₂ — more than 62% of stainless steel grades. Typical recycled content is 60%.
Manufacturability6
1.4311's machinability is fair (40/100, better than 72% of stainless steel grades); weldability excellent (90/100); formability excellent (85/100).
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. 1.4311 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4311
Is 1.4311 easy to machine?
Gummy and strongly work-hardening — use rigid setups, sharp positive-rake carbide, heavy positive feed, 60–120 m/min and copious coolant; avoid dwelling.
Can 1.4311 be welded?
Excellent by GTAW/GMAW/SMAW/SAW with 308L or 308LN filler; no preheat, interpass <150 °C, no post-weld anneal needed thanks to C ≤0.03 % (use N-bearing filler to keep weld strength).
Can 1.4311 be formed, bent or molded?
Cold forms and deep draws well but needs ~20–30 % higher press force and more springback allowance than 304L; hot work 1150–900 °C then solution anneal and quench.
1.4311 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 |
|---|---|---|
| Clow carbon for weld-decay resistance | ≤ 0.03 | 0.02 |
| SiEN 10088-2; ASTM ≤0.75 | ≤ 1 | 0.45 |
| Mn | ≤ 2 | 1.4 |
| P | ≤ 0.05 | 0.03 |
| SASTM S30453 allows ≤0.030 | ≤ 0.02 | 0.01 |
| Cr | 18 – 20 | 19 |
| NiASTM S30453: 8.0–12.0 | 8.5 – 11.5 | 10 |
| NASTM S30453: 0.10–0.16; source of the extra yield strength | 0.12 – 0.22 | 0.16 |
| Fe | balance |
What surface finishes work on 1.4311?
Pickle and passivate after hot work or welding to restore the passive film; takes 2B, BA and mirror polish readily — no anodizing (ferrous alloy).
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 1.4311 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- S30453
- AISI / SAE
- 304LN
- EN / DIN / Werkstoff-Nr.
- X2CrNiN18-10
- GB (China)
- 022Cr19Ni10N
- JIS
- SUS304LN
How much does 1.4311 cost?
1.4311 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.
1.4311 — frequently asked
What is 1.4311 used for?
1.4311 is typically used for pressure vessels, cryogenic equipment and structural components requiring higher strength than 304L. In short: stronger 304L variant; nitrogen without sensitization risk; cryogenic-capable austenitic.
What is the yield strength of 1.4311?
1.4311 has a typical yield strength of 320 MPa (46.4 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 60% of stainless steel grades. Strength varies by condition: see the 7 listed tempers.
Is 1.4311 easy to machine?
Not especially — machinability is rated fair (40/100, better than 72% of stainless steel grades). Gummy and strongly work-hardening — use rigid setups, sharp positive-rake carbide, heavy positive feed, 60–120 m/min and copious coolant; avoid dwelling.
Can 1.4311 be welded?
Yes — weldability is rated excellent (90/100). Excellent by GTAW/GMAW/SMAW/SAW with 308L or 308LN filler; no preheat, interpass <150 °C, no post-weld anneal needed thanks to C ≤0.03 % (use N-bearing filler to keep weld strength).
What surface finishes work on 1.4311?
Pickle and passivate after hot work or welding to restore the passive film; takes 2B, BA and mirror polish readily — no anodizing (ferrous alloy).
Can 1.4311 be formed, bent or molded?
Cold forms and deep draws well but needs ~20–30 % higher press force and more springback allowance than 304L; hot work 1150–900 °C then solution anneal and quench.
What is the maximum service temperature of 1.4311?
1.4311 is rated for continuous use to about 700°C (1,292 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4311 Annealed and 1.4311-FH?
Annealed is the default condition — standard supply condition for plate, sheet, bar, pipe and forgings; maximum ductility and corrosion resistance. FH: maximum strength strip/foil for springs, shims and flat stampings; very limited ductility. Yield strength is 320 MPa in Annealed versus 1,020 MPa in FH.
How much does 1.4311 cost?
1.4311 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 10088-2/-3 Stainless steels – technical delivery conditions — CEN (2014)
- ASTM A240/A240M (S30453) — ASTM International (2023)
- ASTM A666 – annealed/strain-hardened austenitic sheet, strip, plate and bar — ASTM International (2015)
- GB/T 24511 / GB/T 4237 (022Cr19Ni10N) — SAC (2017)
- JIS G4304/G4305 (SUS304LN) — JSA (2021)
- 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)
- Outokumpu Core 304LN/4311 datasheet — Outokumpu (2022)
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.