Stainless Steel 1.4315
EN 1.4315
1.4315 (X5CrNiN19-9, S30451, 304N) is a nitrogen-strengthened 19/9 austenitic stainless with normal carbon content, giving higher yield strength than plain 304 while retaining austenitic ductility.
Reference datasheet — 1.4315 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 AT condition
1.4315 tempers and conditions
1.4315 is supplied in 10 conditions, soft to hard. AT is the default FabDigit quotes; the values on this page are for it.
Compare all 10 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ATDefault +AT / Annealed | Standard stocked condition for plate, sheet, tube and forgings; best corrosion resistance and ductility. | 330 | 650 | 50 | 180 HB | — |
cold drawn to Rm ≥ 700 MPa (EN 10088-3) | Lowest EN strain-hardened class; use where slightly higher strength than annealed bar is needed with good ductility. | 400 | 740 | 25 | 20 HRC | 2.4 % IACS |
Cold drawn | Bright cold-drawn round/hex bar for machined fasteners and shafts; better tolerance, finish and strength than annealed. | 550 | 760 | 30 | 240 HB | — |
cold drawn to Rm ≥ 800 MPa (EN 10088-3) | Common strain-hardened bar class for shafts and cold-headed parts. | 550 | 840 | 20 | 25 HRC | 2.4 % IACS |
Quarter hard | Sheet/strip where moderate strength increase is needed but bending is still required. | 550 | 900 | 20 | 25 HRC | 2.4 % IACS |
cold drawn to Rm ≥ 900 MPa (EN 10088-3) | High-strength small-diameter bar/wire where machining is limited and ductility can be traded for strength. | 700 | 940 | 14 | 30 HRC | 2.4 % IACS |
cold drawn to Rm ≥ 1000 MPa (EN 10088-3) | Maximum EN strain-hardened bar/wire class; springs, small fasteners and highly loaded pins. | 800 | 1,050 | 12 | 34 HRC | 2.4 % IACS |
Half hard | Structural strip, clamps and stamped parts needing high strength with limited forming. | 800 | 1,070 | 12 | 32 HRC | 2.4 % IACS |
Three-quarter hard | Near-maximum strength strip for flat springs and shims; forming limited to gentle bends. | 965 | 1,240 | 10 | 37 HRC | 2.4 % IACS |
Full hard | Highest cold-worked strength; springs, blades and wear strips, essentially non-formable except flat work. | 1,000 | 1,310 | 8 | 41 HRC | 2.4 % IACS |
Supply forms, finishes and certifications
Ways 1.4315 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
Cryo | Solution annealed, cryogenic-qualified | Certification |
What is 1.4315?
1.4315 (X5CrNiN19-9, S30451, 304N) is a nitrogen-strengthened 19/9 austenitic stainless with normal carbon content, giving higher yield strength than plain 304 while retaining austenitic ductility. It is supplied as bar, sheet and cold-drawn product in AT, CD, C700–C1000, 1/4H–FH and cryogenic-qualified conditions; the solution-annealed state gives 330 MPa yield, 650 MPa tensile, 50 % elongation, 180 HB (88 HRB) and service to 600 °C. Machinability is below plain 304 and carbon is not restricted, so heavy welded sections can sensitize — specify 1.4311 (304LN) where post-weld corrosion matters. 1.4315 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). 1.4315 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 650 MPa (94.3 ksi) — weaker than 57% of stainless steel grades. Elongation at break is 50% and the elastic modulus is 200 GPa (29 Msi).
What is 1.4315 used for?
- structural fasteners
- pressure equipment needing higher yield strength
- marine hardware
Advantages
- 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
- Tough — resists crack growth — 200 MPa·√m (182 ksi·√in), better than 86% of stainless steel grades
- Forms and bends easily — 72/100, better than 84% of stainless steel grades
- Readily welded — 80/100, better than 80% of stainless steel grades
1.4315 properties
Typical room-temperature values for 1.4315-AT; bars are the position among stainless steel grades.
Physical3
1.4315 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
1.4315 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 650 MPa (94.3 ksi) — weaker than 57% of stainless steel grades. Elongation at break is 50% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1.4315 is rated for continuous service to 600°C (1,112 °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
1.4315 conducts electricity at 2.4 % IACS, better than 67% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 58% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4315 takes about 55 MJ of energy and emits 5 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
1.4315's machinability is poor (33/100, worse than 57% of stainless steel grades); weldability very good (80/100); formability very good (72/100).
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. 1.4315 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4315
Is 1.4315 easy to machine?
Gummy and strongly work-hardening — use rigid setups, positive-rake carbide, heavy constant feed, no dwell, and copious coolant; expect ~40% of AISI 1212 and slightly worse than plain 304 due to the nitrogen.
Can 1.4315 be welded?
Readily welded by GTAW/GMAW/SMAW with 308L/308LSi (or 309L to carbon steel); no preheat, keep interpass below ~150 °C and heat input low, and avoid weaving to limit sensitization and distortion.
Can 1.4315 be formed, bent or molded?
Cold forms and deep draws well but needs ~30–40% higher press loads and more springback than 304; hot work 1150–1200 °C followed by solution anneal at 1020–1080 °C with rapid quench.
1.4315 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 |
|---|---|---|
| CASTM 304N allows 0.08 max | ≤ 0.06 | 0.04 |
| Si | ≤ 1 | 0.5 |
| Mn | ≤ 2 | 1.5 |
| P | ≤ 0.05 | |
| SASTM permits 0.030 max | ≤ 0.02 | |
| Cr | 18 – 20 | 19 |
| Ni | 8 – 11 | 9.5 |
| Nsolid-solution strengthener; ASTM 304N 0.10–0.16 | 0.12 – 0.22 | 0.16 |
| Fe | balance |
What surface finishes work on 1.4315?
Pickle and passivate (or electropolish) after welding to restore the passive film; takes a mirror polish easily, and can be bead-blasted, brushed or PVD-coated but not anodized.
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 1.4315 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- X5CrNiN19-9
- Similar grades
- S30451304N
How much does 1.4315 cost?
1.4315 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.
1.4315 — frequently asked
What is 1.4315 used for?
1.4315 is typically used for structural fasteners, pressure equipment needing higher yield strength and marine hardware. In short: nitrogen-strengthened 304; higher-yield austenitic fastener grade; cryogenic to 600 °C.
What is the yield strength of 1.4315?
1.4315 has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 650 MPa (94.3 ksi) — weaker than 57% of stainless steel grades. Strength varies by condition: see the 10 listed tempers.
Is 1.4315 easy to machine?
Not especially — machinability is rated poor (33/100, worse than 57% of stainless steel grades). Gummy and strongly work-hardening — use rigid setups, positive-rake carbide, heavy constant feed, no dwell, and copious coolant; expect ~40% of AISI 1212 and slightly worse than plain 304 due to the nitrogen.
Can 1.4315 be welded?
Yes — weldability is rated very good (80/100). Readily welded by GTAW/GMAW/SMAW with 308L/308LSi (or 309L to carbon steel); no preheat, keep interpass below ~150 °C and heat input low, and avoid weaving to limit sensitization and distortion.
What surface finishes work on 1.4315?
Pickle and passivate (or electropolish) after welding to restore the passive film; takes a mirror polish easily, and can be bead-blasted, brushed or PVD-coated but not anodized.
Can 1.4315 be formed, bent or molded?
Cold forms and deep draws well but needs ~30–40% higher press loads and more springback than 304; hot work 1150–1200 °C followed by solution anneal at 1020–1080 °C with rapid quench.
What is the maximum service temperature of 1.4315?
1.4315 is rated for continuous use to about 600°C (1,112 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4315-AT and 1.4315-FH?
AT is the default condition — standard stocked condition for plate, sheet, tube and forgings; best corrosion resistance and ductility. FH: highest cold-worked strength; springs, blades and wear strips, essentially non-formable except flat work. Yield strength is 330 MPa in AT versus 1,000 MPa in FH.
How much does 1.4315 cost?
1.4315 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/-3 Stainless steels — grade X5CrNiN19-9 (1.4315) — CEN (2014)
- ASTM A240/A240M — Cr and Cr-Ni stainless plate, sheet, strip (S30451, 304N) — ASTM (2023)
- ASTM A666 — Annealed or Cold-Worked Austenitic Stainless Sheet, Strip, Plate and Flat Bar — ASTM (2015)
- EN 10028-7 — Flat products for pressure purposes, stainless steels — CEN (2016)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Specialty Handbook: Stainless Steels — ASM International (1994)
- Outokumpu Steel Grades / Sandvik austenitic grade datasheets — Outokumpu / Sandvik (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.