Aluminum ZL114A
ASTM A357.0 · GB ZAlSi7Mg1A
ZL114A (ZAlSi7Mg1A, equivalent to A357.0) is a high-purity Al-7Si-Mg casting alloy strengthened by Mg-Si precipitation and supplied F, T4, T5, T6, T61, T62 or T7.
Reference datasheet — ZL114A 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 T6 condition
ZL114A tempers and conditions
ZL114A is supplied in 7 conditions, soft to hard. T6 is the default FabDigit quotes; the values on this page are for it.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | Non-critical parts or castings that will be heat treated later; lowest strength but best dimensional stability off the mold. | 95 | 180 | 4 | 55 HB | 42 % IACS |
Solution heat treated and naturally aged | Choose when maximum ductility/impact resistance is wanted and full T6 strength is not required. | 130 | 250 | 10 | 65 HB | 36 % IACS |
Cooled from hot working and artificially aged | Lower-cost, low-distortion route for parts with tight dimensional tolerance that do not need full T6 strength. | 230 | 300 | 2.5 | 88 HB | 41 % IACS |
Solution heat treated and overaged (stabilized) | For dimensional stability, reduced residual stress and slightly elevated-temperature service, at the cost of ~10–15 % strength. | 250 | 295 | 6 | 85 HB | 42 % IACS |
T6Default Solution heat treated and artificially aged | Standard aerospace/defense condition — best strength-to-ductility balance; the condition ZL114A castings are normally supplied in. | 275 | 340 | 5 | 100 HB | 39 % IACS |
T6 variant, underaged | A357 aerospace cycle giving near-peak strength with better elongation and toughness than plain T6. | 285 | 345 | 5 | 100 HB | 39 % IACS |
T6, heat treated by the user | Pick when the highest static strength/hardness is required and elongation can be traded away. | 310 | 380 | 3 | 110 HB | 38 % IACS |
What is ZL114A?
ZL114A (ZAlSi7Mg1A, equivalent to A357.0) is a high-purity Al-7Si-Mg casting alloy strengthened by Mg-Si precipitation and supplied F, T4, T5, T6, T61, T62 or T7. Engineers select it for aerospace and defence castings that must meet high-integrity radiographic requirements: the default condition gives 340 MPa tensile, 275 MPa yield, 5 % elongation, 100 HB, 152 W/m·K and 39 % IACS. Service is limited to about 150 °C, and the properties depend on melt modification, degassing and directional solidification, which raises foundry cost. ZL101A is the lower-cost option when strength targets are less demanding. ZL114A has a density of 2.67 g/cm³ (0.0965 lb/in³), lighter than 78% of aluminum grades. It melts at 555°C (1,031 °F). ZL114A has a yield strength of 275 MPa (39.9 ksi) and a tensile strength of 340 MPa (49.3 ksi) — stronger than 70% of aluminum grades. Elongation at break is 5% and the elastic modulus is 72 GPa (10.4 Msi).
What is ZL114A used for?
- aerospace structural castings
- missile/defense components
- high-integrity castings
ZL114A properties
Typical room-temperature values for ZL114A-T6; bars are the position among aluminum grades.
Physical3
ZL114A has a density of 2.67 g/cm³ (0.0965 lb/in³), lighter than 78% of aluminum grades. It melts at 555°C (1,031 °F).
Mechanical12
ZL114A has a yield strength of 275 MPa (39.9 ksi) and a tensile strength of 340 MPa (49.3 ksi) — stronger than 70% of aluminum grades. Elongation at break is 5% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
ZL114A is rated for continuous service to 150°C (302 °F). It conducts heat at 152 W/m·K (87.8 BTU/hr·ft·°F), better than 66% of aluminum grades. Thermal expansion is 21.5 µm/m·K (11.9 µin/in·°F).
Electrical3
ZL114A conducts electricity at 39 % IACS, better than 65% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), better than 62% of aluminum grades.
Sustainability4
Producing a kilogram of ZL114A takes about 195 MJ of energy and emits 12 kg of CO₂ — less than 86% of aluminum grades. Typical recycled content is 15%.
Manufacturability8
ZL114A's machinability is good (55/100, worse than 59% of aluminum grades); weldability very good (75/100); formability poor (15/100).
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. ZL114A is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ZL114A
Is ZL114A easy to machine?
Machines well in T6 with PCD or sharp carbide tooling and high speeds; the 7% Si eutectic is abrasive, so expect tool wear and use flood coolant/air blast to avoid built-up edge.
Can ZL114A be welded?
Readily TIG/MIG welded with 4043 or 4047 (or matching 4008/A357 filler for full-strength repairs); weld zones lose T6 properties, so re-solution + re-age critical repairs.
Can ZL114A be formed, bent or molded?
Excellent fluidity for thin-wall sand, investment and permanent-mold casting; needs Sr/Na modification, Ti-B refinement, degassing and directional solidification with chills to reach aerospace X-ray class.
ZL114A 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 |
|---|---|---|
| Sieutectic former; requires Sr/Na modification | 6.5 – 7.5 | 7 |
| MgMg2Si precipitation hardening | 0.45 – 0.75 | 0.6 |
| Tigrain refiner | 0.1 – 0.2 | 0.15 |
| Beoptional; limits Mg oxidation — fume control required in melting | 0.04 – 0.07 | 0.05 |
| Feimpurity; tighter (≤0.12) for premium aerospace castings | ≤ 0.2 | |
| Cuimpurity | ≤ 0.2 | |
| Mnimpurity | ≤ 0.1 | |
| Znimpurity | ≤ 0.1 | |
| Al | balance |
What surface finishes work on ZL114A?
Takes protective and hardcoat anodizing (dark grey due to Si), chromate/Ti-Zr conversion coating and primer-topcoat systems; avoid decorative bright anodize and mechanically polish only where a matte finish is acceptable.
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 ZL114A in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- A357.0
- GB (China)
- ZAlSi7Mg1A
How much does ZL114A cost?
ZL114A 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.
ZL114A — frequently asked
What is ZL114A used for?
ZL114A is typically used for aerospace structural castings, missile/defense components and high-integrity castings. In short: aerospace-grade Al-Si-Mg casting; high-integrity X-ray castings; heat treatable to 340 MPa.
What is the yield strength of ZL114A?
ZL114A has a typical yield strength of 275 MPa (39.9 ksi) and a tensile strength of 340 MPa (49.3 ksi) — stronger than 70% of aluminum grades. Strength varies by condition: see the 7 listed tempers.
Is ZL114A easy to machine?
Reasonably — machinability is rated good (55/100, worse than 59% of aluminum grades). Machines well in T6 with PCD or sharp carbide tooling and high speeds; the 7% Si eutectic is abrasive, so expect tool wear and use flood coolant/air blast to avoid built-up edge.
Can ZL114A be welded?
Yes — weldability is rated very good (75/100). Readily TIG/MIG welded with 4043 or 4047 (or matching 4008/A357 filler for full-strength repairs); weld zones lose T6 properties, so re-solution + re-age critical repairs.
What surface finishes work on ZL114A?
Takes protective and hardcoat anodizing (dark grey due to Si), chromate/Ti-Zr conversion coating and primer-topcoat systems; avoid decorative bright anodize and mechanically polish only where a matte finish is acceptable.
Can ZL114A be formed, bent or molded?
Excellent fluidity for thin-wall sand, investment and permanent-mold casting; needs Sr/Na modification, Ti-B refinement, degassing and directional solidification with chills to reach aerospace X-ray class.
What is the maximum service temperature of ZL114A?
ZL114A 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 ZL114A-T6 and ZL114A-F?
T6 is the default condition — standard aerospace/defense condition — best strength-to-ductility balance; the condition ZL114A castings are normally supplied in. F: non-critical parts or castings that will be heat treated later; lowest strength but best dimensional stability off the mold. Yield strength is 275 MPa in T6 versus 95 MPa in F.
How much does ZL114A cost?
ZL114A 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
- ASTM B26/B26M & B108/B108M (A357.0 castings) — ASTM (2018)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Specialty Handbook: Aluminum and Aluminum Alloys — ASM International (1993)
- AMS 4241 / AMS-A-21180 premium aluminum castings — SAE International (2019)
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.