Aluminum ER1188-F (As fabricated)
Temper
ASTM AWS A5.10 ER1188 · EN S Al 1450
Supply condition for coiled bulk or drum-pack filler where mechanical properties are not specified.
Values for the F condition
Other ER1188 tempers and conditions
ER1188 is listed in 4 conditions; see the grade overview at ER1188.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AWDefault As-welded deposit | Use for design/QA of the deposited weld metal made with ER1188 on high-purity 1000-series base metal. | 20 | 50 | 45 | 18 HB | 64 % IACS |
Annealed | Soft annealed cut-length rod (1.6–4.0 mm) for GTAW where feeding stiffness is not needed and cleanest metal is wanted. | 22 | 60 | 45 | 18 HB | 64.5 % IACS |
FThis page As fabricated | Supply condition for coiled bulk or drum-pack filler where mechanical properties are not specified. | 50 | 85 | 20 | 24 HB | 64 % IACS |
Strain hardened, half hard | Standard temper for 0.8–1.6 mm GMAW spool wire, drawn stiff enough to feed without birdnesting. | 95 | 110 | 6 | 30 HB | 63.5 % IACS |
What is ER1188-F?
ER1188-F is ER1188 in the F temper — supply condition for coiled bulk or drum-pack filler where mechanical properties are not specified. ER1188-F has a yield strength of 50 MPa (7.25 ksi) and a tensile strength of 85 MPa (12.3 ksi) — weaker than 95% of aluminum grades. Elongation at break is 20% and the elastic modulus is 68 GPa (9.86 Msi). ER1188-F has a density of 2.7 g/cm³ (0.0975 lb/in³), lighter than 59% of aluminum grades. It melts at 657°C (1,215 °F). AW is the default condition FabDigit quotes; F is available on request or by drawing note.
Advantages
- High electrical conductivity — 64 % IACS, better than 100% of aluminum grades
- Readily welded — 96/100, better than 100% of aluminum grades
- Conducts heat well — 233 W/m·K (134.6 BTU/hr·ft·°F), better than 99% of aluminum grades
- Polishes to a fine finish — 92/100, better than 99% of aluminum grades
- Good corrosion resistance — 78/100, better than 94% of aluminum grades
Limitations
- High embodied carbon — 16 kg CO₂/kg, worse than 98% of aluminum grades
- Difficult to machine — 25/100, worse than 96% of aluminum grades
- Low strength — 50 MPa (7.25 ksi), worse than 95% of aluminum grades
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
ER1188-F properties
Typical room-temperature values for ER1188-F; 18 are specific to this condition. Other listed values are ER1188 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
ER1188-F has a density of 2.7 g/cm³ (0.0975 lb/in³), lighter than 59% of aluminum grades. It melts at 657°C (1,215 °F).
Mechanical10
ER1188-F has a yield strength of 50 MPa (7.25 ksi) and a tensile strength of 85 MPa (12.3 ksi) — weaker than 95% of aluminum grades. Elongation at break is 20% and the elastic modulus is 68 GPa (9.86 Msi).
Thermal6
ER1188-F is rated for continuous service to 120°C (248 °F). It conducts heat at 233 W/m·K (134.6 BTU/hr·ft·°F), better than 99% of aluminum grades. Thermal expansion is 23.6 µm/m·K (13.1 µin/in·°F).
Electrical3
ER1188-F conducts electricity at 64 % IACS, better than 100% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 94% of aluminum grades.
Sustainability4
Producing a kilogram of ER1188-F takes about 240 MJ of energy and emits 16 kg of CO₂ — more than 98% of aluminum grades. Typical recycled content is 0%.
Manufacturability8
ER1188-F's machinability is poor (25/100, worse than 96% of aluminum grades); weldability excellent (96/100); formability excellent (85/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ER1188-F
Is ER1188 easy to machine?
Rarely machined; if required use sharp polished high-rake carbide, high speed, low feed and flood lubricant to avoid smearing and built-up edge.
Can ER1188 be welded?
Designed as filler for GTAW/GMAW of 1050A/1060/1070/1080/1199 — use AC or He-rich shielding, keep the wire oxide-free and gloved, and expect very low joint strength so joints must not be load-bearing.
Can ER1188 be formed, bent or molded?
Extremely ductile in O temper; drawn H1x wire work-hardens fast, so re-anneal before tight coiling or re-drawing.
What surface finishes work on ER1188?
Takes bright chemical/electropolish and clear anodize with excellent clarity and colour match to high-purity base metal; avoid alkaline etch overexposure which pits the soft surface.
ER1188 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.
| Element | Spec limit (wt %) |
|---|---|
| Si | ≤ 0.06 |
| Fe | ≤ 0.06 |
| Cu | ≤ 0.01 |
| Mn | ≤ 0.01 |
| Mg | ≤ 0.01 |
| Zn | ≤ 0.03 |
| Ti | ≤ 0.01 |
| VV + Ti combined limit also applies in AA registration | ≤ 0.05 |
| Ga | ≤ 0.03 |
| Berestricted for fume safety in AWS A5.10 | ≤ 3×10⁻⁴ |
| Others (each)total others 0.03 max | ≤ 0.01 |
| Al99.88 % min aluminium | ≥ 99.88 (balance) |
ER1188-F — frequently asked
What is ER1188-F used for?
ER1188-F is typically used for semiconductor process equipment, high-purity chemical piping and reflector fabrication. In short: highest-purity aluminum filler; highest conductivity filler wire; very low joint strength.
What is the yield strength of ER1188-F?
ER1188-F has a typical yield strength of 50 MPa (7.25 ksi) and a tensile strength of 85 MPa (12.3 ksi) — weaker than 95% of aluminum grades. Strength varies by condition: see the 4 listed tempers.
Is ER1188-F easy to machine?
Not especially — machinability is rated poor (25/100, worse than 96% of aluminum grades). Rarely machined; if required use sharp polished high-rake carbide, high speed, low feed and flood lubricant to avoid smearing and built-up edge.
Can ER1188-F be welded?
Yes — weldability is rated excellent (96/100). Designed as filler for GTAW/GMAW of 1050A/1060/1070/1080/1199 — use AC or He-rich shielding, keep the wire oxide-free and gloved, and expect very low joint strength so joints must not be load-bearing.
What surface finishes work on ER1188-F?
Takes bright chemical/electropolish and clear anodize with excellent clarity and colour match to high-purity base metal; avoid alkaline etch overexposure which pits the soft surface.
Can ER1188-F be formed, bent or molded?
Extremely ductile in O temper; drawn H1x wire work-hardens fast, so re-anneal before tight coiling or re-drawing.
What is the maximum service temperature of ER1188-F?
ER1188-F is rated for continuous use to about 120°C (248 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ER1188-AW and ER1188-H14?
AW is the default condition — use for design/QA of the deposited weld metal made with ER1188 on high-purity 1000-series base metal. H14: standard temper for 0.8–1.6 mm GMAW spool wire, drawn stiff enough to feed without birdnesting. Yield strength is 20 MPa in AW versus 95 MPa in H14.
Sources
- AWS A5.10/A5.10M — Welding Consumables — Wire Electrodes, Wires and Rods for Welding of Aluminium — AWS (2021)
- EN ISO 18273 — Wire electrodes, wires and rods for welding of aluminium and aluminium alloys (S Al 1450) — ISO (2015)
- 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)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
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.