Stainless Steel 1.4374
EN 1.4374
1.4374 (X8CrMnNiN18-9-5) is the low-carbon member of the nitrogen-strengthened Cr-Mn-Ni 18-9-5 austenitic family, with carbon reduced to limit chromium-carbide precipitation in the heat-affected zone.
Reference datasheet — 1.4374 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
1.4374 tempers and conditions
1.4374 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 Annealed (solution annealed, 2B/2D cold-rolled or 1D hot-rolled) | Default stock condition for sheet, strip, tube and bar; maximum ductility and corrosion resistance, best for deep drawing and welding. | 400 | 760 | 50 | 200 HB | — |
Cold worked to min. 700 MPa tensile | Lightly skin-passed / temper-rolled strip when slightly higher yield with near-annealed ductility is needed. | 450 | 780 | 45 | 20 HRC | 2.4 % IACS |
Cold worked to min. 850 MPa tensile | Quarter-hard strip and tube for structural trim and light springs where moderate bending is still required. | 600 | 900 | 25 | 26 HRC | 2.4 % IACS |
Cold drawn | Cold-drawn round bar and wire for fasteners and machined parts where better straightness, surface and strength than annealed bar are needed. | 700 | 950 | 20 | 28 HRC | 2.4 % IACS |
Cold worked to min. 1000 MPa tensile | Half-hard strip for clips, clamps, tubing and structural profiles needing high yield with limited forming. | 800 | 1,050 | 15 | 32 HRC | 2.4 % IACS |
Cold worked to min. 1150 MPa tensile | Three-quarter-hard strip for spring clips and high-strength flat parts with simple bends only. | 950 | 1,200 | 10 | 37 HRC | 2.4 % IACS |
Cold worked to min. 1300 MPa tensile | Full-hard strip for flat springs, shims and wear-resisting flat stock; forming is limited to shallow bends across the rolling direction. | 1,100 | 1,350 | 6 | 42 HRC | 2.4 % IACS |
What is 1.4374?
1.4374 (X8CrMnNiN18-9-5) is the low-carbon member of the nitrogen-strengthened Cr-Mn-Ni 18-9-5 austenitic family, with carbon reduced to limit chromium-carbide precipitation in the heat-affected zone. It suits welded and deep-drawn parts in sheet, strip and cold-drawn bar, either annealed (400 MPa yield, 760 MPa tensile, 50 % elongation, 200 HB) or in the cold-worked C700–C1300 strength classes. Weldability rates 70 and formability 80, but machinability is only 40 and corrosion resistance 52, so keep it out of chloride-rich outdoor service; 304L/1.4307 is the nearest alternative. 1.4374 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). 1.4374 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 50% and the elastic modulus is 200 GPa (29 Msi).
What is 1.4374 used for?
- welded structural components
- tanks
- process equipment
- architectural fixtures
Advantages
- Forms and bends easily — 80/100, better than 93% of stainless steel grades
- Ductile — tolerates forming and impact — 50%, better than 90% of stainless steel grades
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
Limitations
- Needs corrosion protection — 52/100, worse than 76% of stainless steel grades
1.4374 properties
Typical room-temperature values for 1.4374-Annealed; bars are the position among stainless steel grades.
Physical3
1.4374 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).
Mechanical16
1.4374 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 57% of stainless steel grades. Elongation at break is 50% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1.4374 is rated for continuous service to 800°C (1,472 °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 16.5 µm/m·K (9.17 µin/in·°F).
Electrical3
1.4374 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 1.4374 takes about 45 MJ of energy and emits 3.6 kg of CO₂ — less than 91% of stainless steel grades. Typical recycled content is 60%.
Manufacturability8
1.4374's machinability is fair (40/100, better than 72% of stainless steel grades); weldability very good (70/100); formability very good (80/100).
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. 1.4374 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4374
Is 1.4374 easy to machine?
Treat like 304 but tougher: rigid setups, sharp positive-rake carbide, heavy constant feed and flood coolant to cut under the work-hardened skin.
Can 1.4374 be welded?
Readily welded by GTAW/GMAW/resistance methods with 307 or 308L-type filler; low carbon limits sensitization but keep interpass temperature low and avoid excessive heat input to control nitrogen porosity.
Can 1.4374 be formed, bent or molded?
Excellent deep-drawing and stretch-forming in the annealed condition, but higher yield and n-value than 304 mean greater press loads and springback; interstage annealing helps for severe draws.
1.4374 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 |
|---|---|---|
| Clowered vs 1.4373 for weldability | ≤ 0.08 | 0.06 |
| Si | ≤ 1 | 0.5 |
| Mnpartial Ni replacement | 7.5 – 10.5 | 9 |
| P | ≤ 0.05 | |
| S | ≤ 0.02 | |
| Cr | 17 – 19 | 18 |
| Ni | 4 – 6 | 5 |
| Naustenite stabiliser and solid-solution strengthener | 0.05 – 0.25 | 0.15 |
| Fe | balance |
What surface finishes work on 1.4374?
Not anodizable — passivate (nitric or citric) after fabrication, electropolish or apply No.4/BA mechanical finishes; use it indoors or coat it in chloride-rich outdoor environments to avoid tea-staining.
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 1.4374 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- X8CrMnNiN18-9-5
How much does 1.4374 cost?
1.4374 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.
1.4374 — frequently asked
What is 1.4374 used for?
1.4374 is typically used for welded structural components, tanks, process equipment and architectural fixtures. In short: weldable 2xx alternative; low-carbon 18-9-5 variant; deep-drawing Cr-Mn grade.
What is the yield strength of 1.4374?
1.4374 has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 57% of stainless steel grades. Strength varies by condition: see the 7 listed tempers.
Is 1.4374 easy to machine?
Not especially — machinability is rated fair (40/100, better than 72% of stainless steel grades). Treat like 304 but tougher: rigid setups, sharp positive-rake carbide, heavy constant feed and flood coolant to cut under the work-hardened skin.
Can 1.4374 be welded?
Yes — weldability is rated very good (70/100). Readily welded by GTAW/GMAW/resistance methods with 307 or 308L-type filler; low carbon limits sensitization but keep interpass temperature low and avoid excessive heat input to control nitrogen porosity.
What surface finishes work on 1.4374?
Not anodizable — passivate (nitric or citric) after fabrication, electropolish or apply No.4/BA mechanical finishes; use it indoors or coat it in chloride-rich outdoor environments to avoid tea-staining.
Can 1.4374 be formed, bent or molded?
Excellent deep-drawing and stretch-forming in the annealed condition, but higher yield and n-value than 304 mean greater press loads and springback; interstage annealing helps for severe draws.
What is the maximum service temperature of 1.4374?
1.4374 is rated for continuous use to about 800°C (1,472 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4374 Annealed and 1.4374-C1300?
Annealed is the default condition — default stock condition for sheet, strip, tube and bar; maximum ductility and corrosion resistance, best for deep drawing and welding. C1300: full-hard strip for flat springs, shims and wear-resisting flat stock; forming is limited to shallow bends across the rolling direction. Yield strength is 400 MPa in Annealed versus 1,100 MPa in C1300.
How much does 1.4374 cost?
1.4374 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 Stainless steels — List of stainless steels — CEN (2014)
- EN 10088-2 Stainless steels — Technical delivery conditions for sheet/plate and strip — CEN (2014)
- ASTM A666 — Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat Bar — ASTM International (2015)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Cr-Mn austenitic (200-series) stainless steel product data — Outokumpu / Aperam (2020)
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.