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Stainless Steel 1.4311 AsWelded

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EN 1.4311 · UNS S30453 · AISI/SAE 304LN · JIS SUS304LN · GB 022Cr19Ni10N

Property set for weld joints made with 308L/308LN filler and left un-annealed; low C + N avoids sensitisation.

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Values for the AsWelded condition

Other 1.4311 tempers and conditions

1.4311 is listed in 7 conditions; see the grade overview at 1.4311.

Compare all 7 conditionsHide
Condition · open for datasheetBest forYield MPaTensile MPaElong. %HardnessConductivity
AnnealedDefault
solution annealed (1020–1120 °C, water quenched)
Standard supply condition for plate, sheet, bar, pipe and forgings; maximum ductility and corrosion resistance.32062050170 HB—
AsWeldedThis page
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.33058038185 HB2.4 % IACS
CD
Cold drawn
Bar and wire with tight tolerance and raised strength for shafts, fasteners and machined parts.5207502820 HRC2.3 % IACS
1/4H
Quarter hard
Light temper rolling for structural sheet and strip needing higher yield with some bendability.6009001425 HRC2.3 % IACS
1/2H
Half hard
Medium temper for springy clips, straps and weight-saving structural strip.8201,080932 HRC2.3 % IACS
3/4H
Three-quarter hard
High-strength strip where only simple flat forming or shearing follows.9101,180736 HRC2.3 % IACS
FH
Full hard
Maximum strength strip/foil for springs, shims and flat stampings; very limited ductility.1,0201,320541 HRC2.3 % IACS

What is 1.4311 AsWelded?

1.4311 AsWelded is 1.4311 in the AsWelded condition — property set for weld joints made with 308L/308LN filler and left un-annealed; low C + N avoids sensitisation. 1.4311 AsWelded has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 580 MPa (84.1 ksi) — weaker than 57% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 195 GPa (28.3 Msi). 1.4311 AsWelded 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). Annealed is the default condition FabDigit quotes; AsWelded is available on request or by drawing note.

Advantages

  • Polishes to a fine finish — 80/100, better than 89% of stainless steel grades
  • Readily welded — 85/100, better than 87% of stainless steel grades

1.4311 AsWelded properties

Typical room-temperature values for 1.4311 AsWelded; 23 are specific to this condition. Other listed values are 1.4311 reference data and may not represent this condition. Bars are the position among stainless steel grades.

Physical3

1.4311 AsWelded 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).

Density7.9 g/cm³0.29 lb/in³
Melting Point (Solidus)1,400°C2,552 °F
Liquidus Temperature1,450°C2,642 °F

Mechanical16

1.4311 AsWelded has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 580 MPa (84.1 ksi) — weaker than 57% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 195 GPa (28.3 Msi).

Elastic (Young's) Modulus195 GPa28.3 Msi
Shear Modulus77 GPa11.2 Msi
Bulk Modulus140 GPa20.3 Msi
Poisson's Ratio0.29
Tensile Strength (Ultimate)580 MPa84.1 ksi
Yield Strength (0.2% offset)330 MPa47.9 ksi
Elongation at Break38%
Reduction in Area45%
Compressive Strength330 MPa47.9 ksi
Shear Strength400 MPa58 ksi
Fatigue Strength (Endurance Limit)180 MPa26.1 ksi
Fracture Toughness (K_IC)150 MPa·√m137 ksi·√in
Charpy V-Notch Impact (RT)90 J66.4 ft·lbf
Hardness, Brinell185 HB
Hardness, Rockwell B89 HRB
Hardness, Vickers195 HV

Thermal6

1.4311 AsWelded 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).

Thermal Conductivity15 W/m·K8.7 BTU/hr·ft·°F
Specific Heat Capacity500 J/kg·K0.12 BTU/lb·°F
Thermal Expansion (CTE, 20–100 °C)16 µm/m·K8.9 µin/in·°F
Latent Heat of Fusion270 J/g116 BTU/lb
Max Service Temperature (continuous)700°C1,292 °F
Min Service Temperature-196°C-321 °F

Electrical3

1.4311 AsWelded conducts electricity at 2.4 % IACS, better than 67% of stainless steel grades.

Electrical Conductivity2.4 % IACS
Electrical Resistivity7.3×10⁻⁷ Ω·m28.7 µΩ·in
Magnetic Responseweakly magnetic

Chemical & Environmental3

Corrosion resistance is good (55/100), worse than 71% of stainless steel grades.

Galvanic Potential (seawater, vs SCE)-0.08 V
Corrosion ResistanceGood55/100
Chemical Resistance SummaryGood in fresh water, steam, nitric acid, most organics and food media; low-carbon + N gives excellent resistance to weld-decay sensitisation. Not suitable for chlorides, seawater, reducing acids (HCl, dilute H2SO4) — pitting, crevice and chloride SCC above ~60 °C.

Sustainability4

Producing a kilogram of 1.4311 AsWelded 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%.

Embodied Energy (primary production)57 MJ/kg24,506 BTU/lb
Embodied Carbon (primary production)5.4 kg CO₂/kg
Embodied Water160 L/kg19.2 gal/lb
Typical Recycled Content60%

Manufacturability6

1.4311 AsWelded's machinability is fair (35/100, better than 51% of stainless steel grades); weldability excellent (85/100); formability good (60/100).

MachinabilityFair35/100
Machinability Rating (AISI 1212 = 100 %)38%
WeldabilityExcellent85/100
Formability (cold)Good60/100
Brazeability / SolderabilityGood60/100
PolishabilityVery good80/100

Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.

Working with 1.4311 AsWelded

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.

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).

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.

ElementSpec limit (wt %)Nominal
Clow carbon for weld-decay resistance≤ 0.030.02
SiEN 10088-2; ASTM ≤0.75≤ 10.45
Mn≤ 21.4
P≤ 0.050.03
SASTM S30453 allows ≤0.030≤ 0.020.01
Cr18 – 2019
NiASTM S30453: 8.0–12.08.5 – 11.510
NASTM S30453: 0.10–0.16; source of the extra yield strength0.12 – 0.220.16
Febalance—

1.4311 AsWelded — frequently asked

What is 1.4311 AsWelded used for?

1.4311 AsWelded 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 AsWelded?

1.4311 AsWelded has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 580 MPa (84.1 ksi) — weaker than 57% of stainless steel grades. Strength varies by condition: see the 7 listed tempers.

Is 1.4311 AsWelded easy to machine?

Not especially — machinability is rated fair (35/100, better than 51% 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 AsWelded be welded?

Yes — weldability is rated excellent (85/100). 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 AsWelded?

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 AsWelded 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 AsWelded?

1.4311 AsWelded 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.

Sources

  1. EN 10088-2/-3 Stainless steels – technical delivery conditions — CEN (2014)
  2. ASTM A240/A240M (S30453) — ASTM International (2023)
  3. ASTM A666 – annealed/strain-hardened austenitic sheet, strip, plate and bar — ASTM International (2015)
  4. GB/T 24511 / GB/T 4237 (022Cr19Ni10N) — SAC (2017)
  5. JIS G4304/G4305 (SUS304LN) — JSA (2021)
  6. ASM Handbook Vol.1 – Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
  7. ASM Handbook Vol.13B – Corrosion: Materials — ASM International (2005)
  8. Outokumpu Core 304LN/4311 datasheet — Outokumpu (2022)

Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.