Aluminum ER5554-O (Annealed)
Temper
ASTM AWS A5.10 ER5554 · EN S Al 5554 · JIS A5554WY · GB SAlMg-1
Soft annealed cut-length rod for GTAW; maximum ductility, easiest to feed and bend by hand.
Values for the O condition
Other ER5554 tempers and conditions
ER5554 is listed in 5 conditions; see the grade overview at ER5554.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AWDefault As-welded deposit | Default condition: properties of the deposited weld metal made with ER5554 wire, GMAW/GTAW, no post-weld heat treatment. | 117 | 250 | 17 | 60 HB | 34 % IACS |
OThis page Annealed | Soft annealed cut-length rod for GTAW; maximum ductility, easiest to feed and bend by hand. | 117 | 248 | 25 | 62 HB | 34 % IACS |
Strain hardened and stabilized, quarter hard | Lightly drawn and stabilized wire/rod for applications needing a stiffer feed without full hard-drawn strength. | 193 | 269 | 15 | 73 HB | 34 % IACS |
Strain hardened and stabilized, half hard | Half-hard stabilized condition; typical of stiffer spooled or straightened filler product. | 214 | 290 | 12 | 81 HB | 34 % IACS |
Strain hardened, half hard | Standard hard-drawn condition of layer-wound GMAW spool wire — column strength high enough for push-feeding through long guns. | 240 | 305 | 8 | 85 HB | 34 % IACS |
What is ER5554-O?
ER5554-O is ER5554 in the O temper — soft annealed cut-length rod for GTAW; maximum ductility, easiest to feed and bend by hand. ER5554-O has a yield strength of 117 MPa (17 ksi) and a tensile strength of 248 MPa (36 ksi) — weaker than 78% of aluminum grades. Elongation at break is 25% and the elastic modulus is 70 GPa (10.2 Msi). ER5554-O has a density of 2.69 g/cm³ (0.0972 lb/in³), lighter than 67% of aluminum grades. It melts at 602°C (1,116 °F). AW is the default condition FabDigit quotes; O is available on request or by drawing note.
Advantages
- Readily welded — 95/100, better than 99% of aluminum grades
- Ductile — tolerates forming and impact — 25%, better than 94% of aluminum grades
- Good corrosion resistance — 78/100, better than 94% of aluminum grades
- Forms and bends easily — 85/100, better than 91% of aluminum grades
- High service temperature — 200°C (392 °F), better than 90% of aluminum grades
Limitations
- Difficult to machine — 38/100, worse than 84% of aluminum grades
- Low strength — 117 MPa (17 ksi), worse than 78% of aluminum grades
ER5554-O properties
Typical room-temperature values for ER5554-O; 22 are specific to this condition. Other listed values are ER5554 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
ER5554-O has a density of 2.69 g/cm³ (0.0972 lb/in³), lighter than 67% of aluminum grades. It melts at 602°C (1,116 °F).
Mechanical10
ER5554-O has a yield strength of 117 MPa (17 ksi) and a tensile strength of 248 MPa (36 ksi) — weaker than 78% of aluminum grades. Elongation at break is 25% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal6
ER5554-O is rated for continuous service to 200°C (392 °F). It conducts heat at 134 W/m·K (77.4 BTU/hr·ft·°F), worse than 60% of aluminum grades. Thermal expansion is 23.6 µm/m·K (13.1 µin/in·°F).
Electrical3
ER5554-O conducts electricity at 34 % IACS, worse than 52% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 94% of aluminum grades.
Sustainability4
Producing a kilogram of ER5554-O takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 15%.
Manufacturability8
ER5554-O's machinability is fair (38/100, worse than 84% of aluminum grades); weldability excellent (95/100); formability excellent (85/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ER5554-O
Is ER5554 easy to machine?
Weld beads machine like 5454 — gummy and prone to built-up edge; use sharp polished-flute carbide, high speed, low feed and generous lubrication.
Can ER5554 be welded?
Designed as GMAW/GTAW filler for 5454, 5154 and 3004 in service above 65 °C; use argon or Ar-He, clean oxide thoroughly, keep interpass temperature below ~120 °C and avoid dilution with Cu- or Si-bearing alloys.
Can ER5554 be formed, bent or molded?
Supplied as drawn rod/wire; interanneal between draws to keep ductility and avoid surface tearing that causes feed problems.
What surface finishes work on ER5554?
Anodizes light grey with a good colour match to 5454/5154; not brazeable and not suitable for direct electroplating without zincate pretreatment.
ER5554 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 |
|---|---|---|
| Si | ≤ 0.25 | 0.1 |
| Fe | ≤ 0.4 | 0.2 |
| Cu | ≤ 0.1 | 0.03 |
| Mn | 0.5 – 1 | 0.75 |
| Mgheld below ~3 % to avoid Mg2Al3 sensitization above 65 °C | 2.4 – 3 | 2.7 |
| Cr | 0.05 – 0.2 | 0.1 |
| Zn | ≤ 0.25 | 0.05 |
| Tigrain refiner | 0.05 – 0.2 | 0.1 |
| Berestricted in some standards/regions | ≤ 3×10⁻⁴ | — |
| Others (each) | ≤ 0.05 | — |
| Others (total) | ≤ 0.15 | — |
| Al | balance | — |
ER5554-O — frequently asked
What is ER5554-O used for?
ER5554-O is typically used for 5454 tank trailers, elevated-temperature aluminum service and chemical process piping. In short: elevated-temperature 5000-series filler; sensitization-resistant Al-Mg; matched filler for 5454.
What is the yield strength of ER5554-O?
ER5554-O has a typical yield strength of 117 MPa (17 ksi) and a tensile strength of 248 MPa (36 ksi) — weaker than 78% of aluminum grades. Strength varies by condition: see the 5 listed tempers.
Is ER5554-O easy to machine?
Not especially — machinability is rated fair (38/100, worse than 84% of aluminum grades). Weld beads machine like 5454 — gummy and prone to built-up edge; use sharp polished-flute carbide, high speed, low feed and generous lubrication.
Can ER5554-O be welded?
Yes — weldability is rated excellent (95/100). Designed as GMAW/GTAW filler for 5454, 5154 and 3004 in service above 65 °C; use argon or Ar-He, clean oxide thoroughly, keep interpass temperature below ~120 °C and avoid dilution with Cu- or Si-bearing alloys.
What surface finishes work on ER5554-O?
Anodizes light grey with a good colour match to 5454/5154; not brazeable and not suitable for direct electroplating without zincate pretreatment.
Can ER5554-O be formed, bent or molded?
Supplied as drawn rod/wire; interanneal between draws to keep ductility and avoid surface tearing that causes feed problems.
What is the maximum service temperature of ER5554-O?
ER5554-O is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ER5554-AW and ER5554-H14?
AW is the default condition — default condition: properties of the deposited weld metal made with ER5554 wire, GMAW/GTAW, no post-weld heat treatment. H14: standard hard-drawn condition of layer-wound GMAW spool wire — column strength high enough for push-feeding through long guns. Yield strength is 117 MPa in AW versus 240 MPa in H14.
Sources
- AWS A5.10/A5.10M Specification for Bare Aluminum and Aluminum-Alloy Welding Electrodes and Rods — American Welding Society (2021)
- International Alloy Designations and Chemical Composition Limits for Wrought Aluminum (Teal Sheets) — The Aluminum Association (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- Aluminium filler metal ER5554 data sheet — welding consumable producers (Lincoln/ESAB/Safra class data) (2023)
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.