Stainless Steel 1.4669
EN 1.4669
EN 1.4669 (X2CrCuNiN23-2-2) is a molybdenum-free, copper-bearing lean duplex stainless intended as an economy alternative to 2205 where general corrosion rather than chloride pitting governs.
Reference datasheet — 1.4669 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
1.4669 tempers and conditions
1.4669 is supplied in 4 conditions, soft to hard. +AT 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 |
|---|---|---|---|---|---|---|
Annealed | Intermediate condition supplied for further cold forming or redrawing; always re-solution annealed for service. | 470 | 680 | 30 | 19 HRC | 2.2 % IACS |
+ATDefault Solution annealed | Standard stock condition for bar, plate and forgings; best combination of ductility, toughness and corrosion resistance. | 500 | 700 | 28 | 21 HRC | 2.2 % IACS |
Solution annealed, peeled/turned bright bar | Choose for machined shafts and fasteners needing clean, dimensionally accurate bar with annealed properties. | 500 | 700 | 27 | 21 HRC | 2.2 % IACS |
Solution annealed then cold drawn bar/wire | Use where higher strength, straightness and close tolerance are required, e.g. cold-headed fasteners and pump shafts. | 700 | 850 | 15 | 29 HRC | 2.2 % IACS |
Supply forms, finishes and certifications
Ways 1.4669 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
1D | Hot rolled, heat treated, pickled plate | Surface finish |
2B | Cold rolled, annealed, pickled and skin-passed sheet | Surface finish |
What is 1.4669?
EN 1.4669 (X2CrCuNiN23-2-2) is a molybdenum-free, copper-bearing lean duplex stainless intended as an economy alternative to 2205 where general corrosion rather than chloride pitting governs. The copper addition lifts machinability (score 45, high for a duplex) while the duplex structure gives 500 MPa yield, 700 MPa tensile and 28% elongation at about 230 HB, in +AT plate and bar, 1D and 2B sheet and pickled or cold-finished product. Maximum service temperature is about 280 °C and corrosion resistance scores 62, below Mo-bearing 1.4662 and 1.4462, which are the obvious step-ups. 1.4669 has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,400°C (2,552 °F). 1.4669 has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 77% of stainless steel grades. Elongation at break is 28% and the elastic modulus is 200 GPa (29 Msi).
What is 1.4669 used for?
- fittings
- structural parts
- general corrosion service
Advantages
- Easy to machine — 45/100, better than 84% of stainless steel grades
- High strength — 500 MPa (72.5 ksi), better than 77% of stainless steel grades
Limitations
- Limited service temperature — 280°C (536 °F), worse than 96% of stainless steel grades
1.4669 properties
Typical room-temperature values for 1.4669-+AT; bars are the position among stainless steel grades.
Physical3
1.4669 has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical17
1.4669 has a yield strength of 500 MPa (72.5 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 77% of stainless steel grades. Elongation at break is 28% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1.4669 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
1.4669 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 52% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4669 takes about 55 MJ of energy and emits 4.2 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 70%.
Manufacturability8
1.4669's machinability is fair (45/100, better than 84% of stainless steel grades); weldability good (65/100); formability fair (50/100).
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. 1.4669 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4669
Is 1.4669 easy to machine?
Machines noticeably better than 2205 thanks to the copper addition, but still work-hardens: use rigid setups, positive-rake coated carbide, heavy feeds and ~30–40 % of the speed used on 304.
Can 1.4669 be welded?
Weldable by GTAW/GMAW/SMAW with 2209-type or matching lean-duplex filler; control heat input roughly 0.5–2.5 kJ/mm, avoid preheat and keep interpass below ~150 °C to hold a balanced ferrite/austenite ratio.
Can 1.4669 be formed, bent or molded?
Cold forms with high forces and substantial springback; hot work between about 1150 °C and 950 °C followed by solution anneal at ~1020–1080 °C and rapid water quench.
1.4669 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 weldability | ≤ 0.03 | 0.02 |
| Si | ≤ 1 | 0.5 |
| Mn | ≤ 2 | 1.2 |
| P | ≤ 0.04 | — |
| S | ≤ 0.03 | — |
| Cr | 22 – 24 | 23 |
| Nilean nickel content | 1.5 – 2.5 | 2 |
| Cuimproves machinability and cold heading | 1.5 – 2.5 | 2 |
| Moresidual only, no deliberate addition | ≤ 0.5 | — |
| Naustenite stabiliser and strengthener | 0.15 – 0.25 | 0.2 |
| Fe | balance | — |
What surface finishes work on 1.4669?
Pickle and passivate after welding or hot work to restore the passive film; takes a good mechanical or electropolished finish, and cannot be 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 1.4669 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- X2CrCuNiN23-2-2
How much does 1.4669 cost?
1.4669 is a premium-cost stainless steel ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
1.4669 — frequently asked
What is 1.4669 used for?
1.4669 is typically used for fittings, structural parts and general corrosion service. In short: best-machining lean duplex; molybdenum-free, lower alloy cost; duplex strength on a budget.
What is the yield strength of 1.4669?
1.4669 has a typical yield strength of 500 MPa (72.5 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 77% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is 1.4669 easy to machine?
Reasonably — machinability is rated fair (45/100, better than 84% of stainless steel grades). Machines noticeably better than 2205 thanks to the copper addition, but still work-hardens: use rigid setups, positive-rake coated carbide, heavy feeds and ~30–40 % of the speed used on 304.
Can 1.4669 be welded?
Yes — weldability is rated good (65/100). Weldable by GTAW/GMAW/SMAW with 2209-type or matching lean-duplex filler; control heat input roughly 0.5–2.5 kJ/mm, avoid preheat and keep interpass below ~150 °C to hold a balanced ferrite/austenite ratio.
What surface finishes work on 1.4669?
Pickle and passivate after welding or hot work to restore the passive film; takes a good mechanical or electropolished finish, and cannot be anodized.
Can 1.4669 be formed, bent or molded?
Cold forms with high forces and substantial springback; hot work between about 1150 °C and 950 °C followed by solution anneal at ~1020–1080 °C and rapid water quench.
What is the maximum service temperature of 1.4669?
1.4669 is rated for continuous use to about 280°C (536 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does 1.4669 cost?
1.4669 is a premium-cost stainless steel ($$$), 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 10088-3 Stainless steels — Semi-finished products, bars, rods, wire — CEN (2014)
- ASM Specialty Handbook: Stainless Steels — ASM International (1994)
- Practical Guidelines for the Fabrication of Duplex Stainless Steels — IMOA (2014)
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.