Stainless Steel 1.4655
EN 1.4655
EN 1.4655 (X2CrNiCuN23-4) is a copper-modified lean duplex stainless with roughly 23% Cr and 4% Ni plus nitrogen, offering better machinability than standard duplex grades and general corrosion resistance in the 2304 class.
Reference datasheet — 1.4655 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 CR-2B condition
1.4655 tempers and conditions
1.4655 is supplied in 4 conditions, soft to hard. CR-2B is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
1D | Pick for plate and heavy sheet in vessels, structures and welded fabrications above ~4 mm. | 460 | 680 | 30 | 220 HB | — |
1E | Same metallurgy as 1D but descaled mechanically — cheaper plate surface where the part will be coated, machined or painted. | 460 | 680 | 30 | 19 HRC | 2.2 % IACS |
CR-2BDefault 2B | Standard stocked cold-rolled sheet/strip condition for tanks, panels and press-formed parts. | 480 | 700 | 28 | 230 HB | — |
Cold drawn | Higher strength and tight tolerance bar for fasteners, pump shafts and CNC parts; reduced ductility. | 680 | 850 | 16 | 27 HRC | 2.2 % IACS |
Supply forms, finishes and certifications
Ways 1.4655 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
CW-STRIP | Cold worked strip | Supply form |
SA-BAR | Solution annealed bar / forging | Supply form |
2R | 2R | Surface finish |
What is 1.4655?
EN 1.4655 (X2CrNiCuN23-4) is a copper-modified lean duplex stainless with roughly 23% Cr and 4% Ni plus nitrogen, offering better machinability than standard duplex grades and general corrosion resistance in the 2304 class. Engineers use it for moderate-strength corrosion service at 480 MPa yield, 700 MPa tensile, 28% elongation and about 230 HB, in cold- and hot-rolled sheet (2B, 1D, 1E), 2R bright strip, solution-annealed bar and cold-drawn or cold-worked strip. Service is capped near 280 °C, and with no molybdenum its chloride pitting resistance is limited (corrosion score 58) — step up to 1.4462 (2205) for seawater or high-chloride duty. 1.4655 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,420°C (2,588 °F). 1.4655 has a yield strength of 480 MPa (69.6 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 75% of stainless steel grades. Elongation at break is 28% and the elastic modulus is 200 GPa (29 Msi).
What is 1.4655 used for?
- structural components
- tanks
- fittings
Advantages
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
- High strength — 480 MPa (69.6 ksi), better than 75% of stainless steel grades
Limitations
- Limited service temperature — 280°C (536 °F), worse than 96% of stainless steel grades
1.4655 properties
Typical room-temperature values for 1.4655-CR-2B; bars are the position among stainless steel grades.
Physical3
1.4655 has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,420°C (2,588 °F).
Mechanical16
1.4655 has a yield strength of 480 MPa (69.6 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 75% of stainless steel grades. Elongation at break is 28% and the elastic modulus is 200 GPa (29 Msi).
Thermal5
1.4655 is rated for continuous service to 280°C (536 °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 13 µm/m·K (7.22 µin/in·°F).
Electrical3
1.4655 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 62% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4655 takes about 52 MJ of energy and emits 3.6 kg of CO₂ — less than 76% of stainless steel grades. Typical recycled content is 70%.
Manufacturability7
1.4655's machinability is fair (42/100, better than 79% of stainless steel grades); weldability very good (70/100); formability good (58/100).
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. 1.4655 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4655
Is 1.4655 easy to machine?
Machine like 2205 but slightly easier thanks to copper: rigid setup, sharp coated carbide, low speed / high positive feed, generous coolant, avoid dwell to prevent work hardening.
Can 1.4655 be welded?
Weld with 22-9-3-L / 2209-type filler or matching consumables, low-to-moderate heat input, interpass below ~150 °C, no preheat, argon+2%N shielding helps restore austenite balance.
Can 1.4655 be formed, bent or molded?
Cold form with ~2× the press force and larger bend radii than 304 because of high yield and springback; hot form 1000–1150 °C followed by full solution anneal and water quench.
1.4655 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 |
|---|---|---|
| C | ≤ 0.03 | 0.02 |
| Si | ≤ 1 | 0.5 |
| Mn | ≤ 2 | 1.3 |
| P | ≤ 0.04 | — |
| S | ≤ 0.02 | — |
| Cr | 22 – 24 | 23 |
| Ni | 3.5 – 5.5 | 4.2 |
| Modeliberately low-Mo (lean duplex) | 0.1 – 0.6 | 0.3 |
| Cuimproves machinability and acid resistance | 1 – 3 | 2 |
| N | 0.05 – 0.2 | 0.12 |
| Fe | balance | — |
What surface finishes work on 1.4655?
Pickle and passivate after welding to remove heat tint; grinds and polishes to a bright finish, electropolishing works well; no anodizing (n/a for stainless).
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 1.4655 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- X2CrNiCuN23-4
How much does 1.4655 cost?
1.4655 is a premium-cost stainless steel ($$$), cheaper than about 51% 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.
1.4655 — frequently asked
What is 1.4655 used for?
1.4655 is typically used for structural components, tanks and fittings. In short: easier-machining lean duplex; 2304-class corrosion, higher yield; molybdenum-free duplex economy.
What is the yield strength of 1.4655?
1.4655 has a typical yield strength of 480 MPa (69.6 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 75% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is 1.4655 easy to machine?
Not especially — machinability is rated fair (42/100, better than 79% of stainless steel grades). Machine like 2205 but slightly easier thanks to copper: rigid setup, sharp coated carbide, low speed / high positive feed, generous coolant, avoid dwell to prevent work hardening.
Can 1.4655 be welded?
Yes — weldability is rated very good (70/100). Weld with 22-9-3-L / 2209-type filler or matching consumables, low-to-moderate heat input, interpass below ~150 °C, no preheat, argon+2%N shielding helps restore austenite balance.
What surface finishes work on 1.4655?
Pickle and passivate after welding to remove heat tint; grinds and polishes to a bright finish, electropolishing works well; no anodizing (n/a for stainless).
Can 1.4655 be formed, bent or molded?
Cold form with ~2× the press force and larger bend radii than 304 because of high yield and springback; hot form 1000–1150 °C followed by full solution anneal and water quench.
What is the maximum service temperature of 1.4655?
1.4655 is rated for continuous use to about 280°C (536 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4655 CR-2B and 1.4655-CD?
CR-2B is the default condition — standard stocked cold-rolled sheet/strip condition for tanks, panels and press-formed parts. CD: higher strength and tight tolerance bar for fasteners, pump shafts and CNC parts; reduced ductility. Yield strength is 480 MPa in CR-2B versus 680 MPa in CD.
How much does 1.4655 cost?
1.4655 is a premium-cost stainless steel ($$$), cheaper than about 51% 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 Technical delivery conditions for sheet/plate and strip — CEN (2014)
- EN 10088-3 Technical delivery conditions for semi-finished products, bars, rods, wire, sections — CEN (2014)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Lean duplex stainless steel datasheets (2304-class) — Outokumpu / Sandvik (2023)
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.