Aluminum ER1188-H14
Temper
ASTM AWS A5.10 ER1188 · EN S Al 1450
H14 = strain hardened, half hard
Standard temper for 0.8–1.6 mm GMAW spool wire, drawn stiff enough to feed without birdnesting.
Values for the H14 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 |
As fabricated | Supply condition for coiled bulk or drum-pack filler where mechanical properties are not specified. | 50 | 85 | 20 | 24 HB | 64 % IACS |
H14This page 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-H14?
ER1188-H14 is ER1188 in the H14 temper — standard temper for 0.8–1.6 mm GMAW spool wire, drawn stiff enough to feed without birdnesting. ER1188-H14 has a yield strength of 95 MPa (13.8 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 86% of aluminum grades. Elongation at break is 6% and the elastic modulus is 68 GPa (9.86 Msi). ER1188-H14 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; H14 is available on request or by drawing note.
Advantages
- High electrical conductivity — 63.5 % IACS, better than 100% of aluminum grades
- Readily welded — 96/100, better than 100% of aluminum grades
- Polishes to a fine finish — 92/100, better than 99% of aluminum grades
- Conducts heat well — 231 W/m·K (133.5 BTU/hr·ft·°F), better than 97% 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 — 30/100, worse than 92% of aluminum grades
- Limited service temperature — 100°C (212 °F), worse than 91% of aluminum grades
- Low strength — 95 MPa (13.8 ksi), worse than 86% of aluminum grades
ER1188-H14 properties
Typical room-temperature values for ER1188-H14; 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-H14 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-H14 has a yield strength of 95 MPa (13.8 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 86% of aluminum grades. Elongation at break is 6% and the elastic modulus is 68 GPa (9.86 Msi).
Thermal6
ER1188-H14 is rated for continuous service to 100°C (212 °F). It conducts heat at 231 W/m·K (133.5 BTU/hr·ft·°F), better than 97% of aluminum grades. Thermal expansion is 23.6 µm/m·K (13.1 µin/in·°F).
Electrical3
ER1188-H14 conducts electricity at 63.5 % 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-H14 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-H14's machinability is poor (30/100, worse than 92% of aluminum grades); weldability excellent (96/100); formability very good (70/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ER1188-H14
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-H14 — frequently asked
What is ER1188-H14 used for?
ER1188-H14 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-H14?
ER1188-H14 has a typical yield strength of 95 MPa (13.8 ksi) and a tensile strength of 110 MPa (16 ksi) — weaker than 86% of aluminum grades. Strength varies by condition: see the 4 listed tempers.
Is ER1188-H14 easy to machine?
Not especially — machinability is rated poor (30/100, worse than 92% 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-H14 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-H14?
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-H14 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-H14?
ER1188-H14 is rated for continuous use to about 100°C (212 °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.