Aluminum A444.0
AA A444.0 · UNS A14440
A444.0 is an Al-Si7 casting alloy in the ANSI/AA 4xx.x family, supplied without deliberate copper or magnesium additions, so it is used as-cast (F) or in T4 rather than precipitation hardened.
Reference datasheet — A444.0 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 T4 condition
A444.0 tempers and conditions
A444.0 is supplied in 2 conditions, soft to hard. T4 is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
T4Default Solution heat treated and naturally aged | Standard commercial condition: solution treatment spheroidizes the eutectic silicon, maximizing elongation and impact/energy absorption. | 62 | 159 | 21 | 44 HB | 41 % IACS |
As fabricated | Pick when the casting is used as-cast and moderate ductility is enough; lowest cost. | 76 | 145 | 13 | 44 HB | 42 % IACS |
What is A444.0?
A444.0 is an Al-Si7 casting alloy in the ANSI/AA 4xx.x family, supplied without deliberate copper or magnesium additions, so it is used as-cast (F) or in T4 rather than precipitation hardened. Engineers pick it where impact resistance and ductility matter more than strength — 21% elongation, 159 MPa tensile, 62 MPa yield, 44 HB — and it pours well as sand and permanent-mold castings, with 151 W/m·K thermal conductivity and 41% IACS. Strength is low and service is limited to about 150 °C; for load-bearing castings A356.0-T6 is the usual step up. A444.0 has a density of 2.68 g/cm³ (0.0968 lb/in³), lighter than 72% of aluminum grades. It melts at 577°C (1,071 °F). A444.0 has a yield strength of 62 MPa (8.99 ksi) and a tensile strength of 159 MPa (23.1 ksi) — weaker than 93% of aluminum grades. Elongation at break is 21% and the elastic modulus is 71 GPa (10.3 Msi).
What is A444.0 used for?
- marine fittings
- appliance parts
- low-stress structural castings
Advantages
- Ductile — tolerates forming and impact — 21%, better than 91% of aluminum grades
- High electrical conductivity — 41 % IACS, better than 78% of aluminum grades
- Readily welded — 82/100, better than 76% of aluminum grades
Limitations
- Low strength — 62 MPa (8.99 ksi), worse than 93% of aluminum grades
A444.0 properties
Typical room-temperature values for A444.0-T4; bars are the position among aluminum grades.
Physical3
A444.0 has a density of 2.68 g/cm³ (0.0968 lb/in³), lighter than 72% of aluminum grades. It melts at 577°C (1,071 °F).
Mechanical12
A444.0 has a yield strength of 62 MPa (8.99 ksi) and a tensile strength of 159 MPa (23.1 ksi) — weaker than 93% of aluminum grades. Elongation at break is 21% and the elastic modulus is 71 GPa (10.3 Msi).
Thermal6
A444.0 is rated for continuous service to 150°C (302 °F). It conducts heat at 151 W/m·K (87.2 BTU/hr·ft·°F), better than 63% of aluminum grades. Thermal expansion is 21.5 µm/m·K (11.9 µin/in·°F).
Electrical3
A444.0 conducts electricity at 41 % IACS, better than 78% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), better than 57% of aluminum grades.
Sustainability4
Producing a kilogram of A444.0 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 55%.
Manufacturability7
A444.0's machinability is fair (50/100, worse than 65% of aluminum grades); weldability very good (82/100); formability fair (35/100).
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 aluminum family
Yield strength against density for every aluminum grade FabDigit runs. A444.0 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with A444.0
Is A444.0 easy to machine?
Very soft and gummy — use sharp polished-flute carbide, high speed, generous rake and flood coolant or MQL to avoid built-up edge and torn threads.
Can A444.0 be welded?
Readily GTAW/GMAW welded with 4043 filler; repair welds need no post-weld heat treatment since the alloy is not precipitation strengthened.
Can A444.0 be formed, bent or molded?
Excellent fluidity for permanent-mold (and sand) casting with Sr/Na modification and Ti grain refinement; unusually tolerant of straightening or local bending after casting.
A444.0 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 | 6.5 – 7.5 | 7 |
| Felow-Fe 'A' variant of 444.0 | ≤ 0.2 | 0.12 |
| Cu | ≤ 0.1 | 0.03 |
| Mn | ≤ 0.1 | 0.03 |
| Mgkept low deliberately — no age hardening | ≤ 0.05 | 0.01 |
| Zn | ≤ 0.1 | 0.03 |
| Tigrain refiner | ≤ 0.2 | 0.12 |
| Others (each) | ≤ 0.05 | |
| Others (total) | ≤ 0.15 | |
| Al | balance |
What surface finishes work on A444.0?
Takes conversion coating and paint well; anodizing is protective but grey/mottled from eutectic silicon; polishing limited by Si particles.
Surface treatments FabDigit runs on aluminum 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).
Organic Coating
Equivalent designations
Standards and trade names that resolve to Aluminum A444.0 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A14440
How much does A444.0 cost?
A444.0 is a standard-cost aluminum ($$), cheaper than about 71% 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.
A444.0 — frequently asked
What is A444.0 used for?
A444.0 is typically used for marine fittings, appliance parts and low-stress structural castings. In short: highest-ductility Al-Si casting; no heat treatment needed; low strength, high impact.
What is the yield strength of A444.0?
A444.0 has a typical yield strength of 62 MPa (8.99 ksi) and a tensile strength of 159 MPa (23.1 ksi) — weaker than 93% of aluminum grades. Strength varies by condition: see the 2 listed tempers.
Is A444.0 easy to machine?
Reasonably — machinability is rated fair (50/100, worse than 65% of aluminum grades). Very soft and gummy — use sharp polished-flute carbide, high speed, generous rake and flood coolant or MQL to avoid built-up edge and torn threads.
Can A444.0 be welded?
Yes — weldability is rated very good (82/100). Readily GTAW/GMAW welded with 4043 filler; repair welds need no post-weld heat treatment since the alloy is not precipitation strengthened.
What surface finishes work on A444.0?
Takes conversion coating and paint well; anodizing is protective but grey/mottled from eutectic silicon; polishing limited by Si particles.
Can A444.0 be formed, bent or molded?
Excellent fluidity for permanent-mold (and sand) casting with Sr/Na modification and Ti grain refinement; unusually tolerant of straightening or local bending after casting.
What is the maximum service temperature of A444.0?
A444.0 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between A444.0-T4 and A444.0-F?
T4 is the default condition — standard commercial condition: solution treatment spheroidizes the eutectic silicon, maximizing elongation and impact/energy absorption. F: pick when the casting is used as-cast and moderate ductility is enough; lowest cost. Yield strength is 62 MPa in T4 versus 76 MPa in F.
How much does A444.0 cost?
A444.0 is a standard-cost aluminum ($$), cheaper than about 71% 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
- Designations and Chemical Composition Limits for Aluminum Alloys in the Form of Castings and Ingot (Teal Sheets) — The Aluminum Association (2018)
- ASTM B108 / B108M — Aluminum-Alloy Permanent Mold Castings — ASTM International (2019)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- Aluminum and Aluminum Alloys (ASM Specialty Handbook) — ASM International (1993)
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.