Stainless Steel E2209T1-1-AW (As-welded deposit)
Heat-treated state · default condition
Standard supply/qualification condition: all-position FCAW deposit under 100 % CO₂, used as-welded with no post-weld heat treatment.
Values for the AW condition
Other E2209T1-1 tempers and conditions
E2209T1-1 is listed in 2 conditions; see the grade overview at E2209T1-1.
- SA
- AW
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Deposit solution annealed ~1080–1120 °C and water quenched | Used when the whole fabrication is solution annealed after welding (e.g. clad or heavily restrained duplex components); restores phase balance and maximises toughness but lowers strength. | 520 | 740 | 32 | 22 HRC | 2.2 % IACS |
AWDefaultThis page As-welded deposit | Standard supply/qualification condition: all-position FCAW deposit under 100 % CO₂, used as-welded with no post-weld heat treatment. | 600 | 810 | 26 | 25 HRC | 2 % IACS |
What is E2209T1-1-AW?
E2209T1-1-AW is E2209T1-1 heat treated to AW — standard supply/qualification condition: all-position FCAW deposit under 100 % CO₂, used as-welded with no post-weld heat treatment. E2209T1-1-AW has a yield strength of 600 MPa (87 ksi) and a tensile strength of 810 MPa (117 ksi) — stronger than 86% of stainless steel grades. Elongation at break is 26% and the elastic modulus is 200 GPa (29 Msi). E2209T1-1-AW has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,385°C (2,525 °F).
Advantages
- High strength — 600 MPa (87 ksi), better than 86% of stainless steel grades
- Good corrosion resistance — 78/100, better than 84% of stainless steel grades
- Readily welded — 80/100, better than 80% of stainless steel grades
Limitations
- Limited service temperature — 250°C (482 °F), worse than 99% of stainless steel grades
- Low electrical conductivity — 2 % IACS, worse than 77% of stainless steel grades
E2209T1-1-AW properties
Typical room-temperature values for E2209T1-1-AW; 24 are specific to this condition. Other listed values are E2209T1-1 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
E2209T1-1-AW has a density of 7.8 g/cm³ (0.282 lb/in³), heavier than 50% of stainless steel grades. It melts at 1,385°C (2,525 °F).
Mechanical16
E2209T1-1-AW has a yield strength of 600 MPa (87 ksi) and a tensile strength of 810 MPa (117 ksi) — stronger than 86% of stainless steel grades. Elongation at break is 26% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
E2209T1-1-AW is rated for continuous service to 250°C (482 °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 13.5 µm/m·K (7.5 µin/in·°F).
Electrical3
E2209T1-1-AW conducts electricity at 2 % IACS, worse than 77% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 84% of stainless steel grades.
Sustainability4
Producing a kilogram of E2209T1-1-AW takes about 55 MJ of energy and emits 4.5 kg of CO₂ — more than 50% of stainless steel grades. Typical recycled content is 55%.
Manufacturability6
E2209T1-1-AW's machinability is poor (28/100, worse than 79% of stainless steel grades); weldability very good (80/100); formability fair (35/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with E2209T1-1-AW
Is E2209T1-1 easy to machine?
Deposit machines like 2205 duplex: rigid setup, sharp positive-rake carbide, low speed/heavy feed and flood coolant to beat work hardening.
Can E2209T1-1 be welded?
All-position FCAW with 100 % CO₂ (or Ar/CO₂ for the -4 classification), heat input ~0.5–2.5 kJ/mm and interpass ≤150 °C to hold 30–60 FN and avoid σ-phase/475 °C embrittlement; keep wire dry and re-bake per maker if exposed.
Can E2209T1-1 be formed, bent or molded?
Not a wrought product form; joint design should allow moderate weld metal ductility (~25 % elongation) and avoid severe cold straightening of the deposit.
What surface finishes work on E2209T1-1?
Remove all slag and heat tint by grinding, then pickle/passivate (HNO₃-HF paste) or bead-blast plus passivation to restore full pitting resistance of the weld and HAZ.
E2209T1-1 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 |
|---|---|---|
| CAWS A5.22 E2209TX-X | ≤ 0.04 | 0.03 |
| Cr | 21 – 24 | 22.5 |
| Ni | 7.5 – 10.5 | 9 |
| Mo | 2.5 – 4 | 3.1 |
| Nkey austenite stabiliser for phase balance | 0.08 – 0.2 | 0.14 |
| Mn | 0.5 – 2 | 1.1 |
| Si | ≤ 1 | 0.7 |
| Cu | ≤ 0.75 | 0.1 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.03 | 0.01 |
| Fe | balance | — |
E2209T1-1-AW — frequently asked
What is E2209T1-1-AW used for?
E2209T1-1-AW is typically used for FCAW duplex pressure vessels, offshore topside and subsea structures, seawater handling and desalination equipment, chemical tanker cargo tank welds, FGD scrubbers and absorber towers and duplex process piping and storage tanks. In short: highest-strength wire listed; matches 2205 duplex; all-position duplex FCAW.
What is the yield strength of E2209T1-1-AW?
E2209T1-1-AW has a typical yield strength of 600 MPa (87 ksi) and a tensile strength of 810 MPa (117 ksi) — stronger than 86% of stainless steel grades. Strength varies by condition: see the 2 listed tempers.
Is E2209T1-1-AW easy to machine?
Not especially — machinability is rated poor (28/100, worse than 79% of stainless steel grades). Deposit machines like 2205 duplex: rigid setup, sharp positive-rake carbide, low speed/heavy feed and flood coolant to beat work hardening.
Can E2209T1-1-AW be welded?
Yes — weldability is rated very good (80/100). All-position FCAW with 100 % CO₂ (or Ar/CO₂ for the -4 classification), heat input ~0.5–2.5 kJ/mm and interpass ≤150 °C to hold 30–60 FN and avoid σ-phase/475 °C embrittlement; keep wire dry and re-bake per maker if exposed.
What surface finishes work on E2209T1-1-AW?
Remove all slag and heat tint by grinding, then pickle/passivate (HNO₃-HF paste) or bead-blast plus passivation to restore full pitting resistance of the weld and HAZ.
Can E2209T1-1-AW be formed, bent or molded?
Not a wrought product form; joint design should allow moderate weld metal ductility (~25 % elongation) and avoid severe cold straightening of the deposit.
What is the maximum service temperature of E2209T1-1-AW?
E2209T1-1-AW is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E2209T1-1-AW and E2209T1-1-SA?
AW is the default condition — standard supply/qualification condition: all-position FCAW deposit under 100 % CO₂, used as-welded with no post-weld heat treatment. SA: used when the whole fabrication is solution annealed after welding (e.g. clad or heavily restrained duplex components); restores phase balance and maximises toughness but lowers strength. Yield strength is 600 MPa in AW versus 520 MPa in SA.
Sources
- AWS A5.22/A5.22M — Specification for Stainless Steel Flux Cored and Metal Cored Welding Electrodes and Rods — American Welding Society (2012)
- ASME BPVC Section II Part C, SFA-5.22 — ASME (2023)
- Duplex 2209 flux-cored wire datasheets (ESAB Shield-Bright 2209, Böhler CN 22/9 N-FD, Kobelco DW-2209) — various producers (2023)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- 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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.