Aluminum ZL107
GB ZL107 · ASTM 319.0
ZL107 (319.0) is a GB/T 1173 Al-Si-Cu casting alloy with roughly 4% Cu, offered as-cast or T6 in both sand (F, T6) and permanent-mold (J-F, J-T6) conditions.
Reference datasheet — ZL107 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
ZL107 tempers and conditions
ZL107 is supplied in 4 conditions, soft to hard. T6 is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | Lowest-cost condition for lightly loaded general castings where heat treatment is not justified. | 120 | 180 | 2 | 68 HB | 28 % IACS |
permanent (metal) mould, as cast | Metal-mould as-cast condition: faster solidification raises strength over sand casting without heat treatment. | 135 | 210 | 2.5 | 75 HB | 28 % IACS |
T6Default Solution heat treated and artificially aged | Standard strengthened condition for structural sand castings needing ≥245 MPa tensile strength. | 180 | 250 | 2 | 95 HB | 27 % IACS |
permanent (metal) mould, solution treated and artificially aged | Highest-strength ZL107 condition; choose for metal-mould production parts with the tightest strength requirements. | 205 | 285 | 2.5 | 105 HB | 27 % IACS |
What is ZL107?
ZL107 (319.0) is a GB/T 1173 Al-Si-Cu casting alloy with roughly 4% Cu, offered as-cast or T6 in both sand (F, T6) and permanent-mold (J-F, J-T6) conditions. Fluidity, low hot-tearing tendency, HB 95 hardness and machinability 65 make it a general engineering choice for housings, brackets and machinery castings at 180 MPa yield and 250 MPa tensile, usable to 200 °C. Copper lowers corrosion resistance and makes repair welding hot-crack sensitive, elongation is only 2%, and thermal conductivity is 110 W/m·K (27% IACS), below the AlSi7Mg alloys. ZL105 is the nearer choice when pressure tightness and ductility matter. ZL107 has a density of 2.77 g/cm³ (0.1 lb/in³), heavier than 71% of aluminum grades. It melts at 516°C (961 °F). ZL107 has a yield strength of 180 MPa (26.1 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 54% of aluminum grades. Elongation at break is 2% and the elastic modulus is 74 GPa (10.7 Msi).
What is ZL107 used for?
- general machinery castings
- housings
- brackets
Advantages
- Low embodied carbon — 9.5 kg CO₂/kg, better than 97% of aluminum grades
- High service temperature — 200°C (392 °F), better than 90% of aluminum grades
Limitations
- Poor heat conductor — 110 W/m·K (63.6 BTU/hr·ft·°F), worse than 88% of aluminum grades
- Limited ductility — 2%, worse than 87% of aluminum grades
- Low electrical conductivity — 27 % IACS, worse than 86% of aluminum grades
- Hard to polish — 45/100, worse than 76% of aluminum grades
- Needs corrosion protection — 40/100, worse than 75% of aluminum grades
ZL107 properties
Typical room-temperature values for ZL107-T6; bars are the position among aluminum grades.
Physical3
ZL107 has a density of 2.77 g/cm³ (0.1 lb/in³), heavier than 71% of aluminum grades. It melts at 516°C (961 °F).
Mechanical12
ZL107 has a yield strength of 180 MPa (26.1 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 54% of aluminum grades. Elongation at break is 2% and the elastic modulus is 74 GPa (10.7 Msi).
Thermal6
ZL107 is rated for continuous service to 200°C (392 °F). It conducts heat at 110 W/m·K (63.6 BTU/hr·ft·°F), worse than 88% of aluminum grades. Thermal expansion is 21.5 µm/m·K (11.9 µin/in·°F).
Electrical3
ZL107 conducts electricity at 27 % IACS, worse than 86% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (40/100), worse than 75% of aluminum grades.
Sustainability4
Producing a kilogram of ZL107 takes about 150 MJ of energy and emits 9.5 kg of CO₂ — less than 97% of aluminum grades. Typical recycled content is 60%.
Manufacturability7
ZL107's machinability is good (65/100, better than 62% of aluminum grades); weldability 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. ZL107 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with ZL107
Is ZL107 easy to machine?
Machines well for a casting alloy thanks to the Cu content and T6 hardness; use PCD or carbide tooling because of the eutectic Si and expect abrasive tool wear.
Can ZL107 be welded?
TIG/MIG repair is possible with 4043/4047 filler but the ~4 % Cu makes it hot-crack sensitive; preheat and re-heat-treat locally repaired structural castings.
Can ZL107 be formed, bent or molded?
Excellent fluidity and low hot-tearing tendency in sand and permanent-mould casting; feed heavy sections well and degas the melt to avoid porosity.
ZL107 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 |
| Cu | 3.5 – 4.5 | 4 |
| Fe≤0.5 for sand casting, ≤0.6 for permanent mould | ≤ 0.6 | |
| Mgimpurity limit | ≤ 0.1 | |
| Mnimpurity limit | ≤ 0.5 | |
| Znimpurity limit | ≤ 0.3 | |
| Tigrain refiner residual / impurity | ≤ 0.2 | |
| Others (total)≤1.0 sand, ≤1.4 permanent mould | ≤ 1.4 | |
| Al | balance |
What surface finishes work on ZL107?
Takes paint and chromate/phosphate conversion coatings well; anodizing yields only a dark grey film, so use hard-coat only for wear, not appearance.
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 ZL107 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- 319.0
- Also called
- ZAlSi7Cu4
How much does ZL107 cost?
ZL107 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.
ZL107 — frequently asked
What is ZL107 used for?
ZL107 is typically used for general machinery castings, housings and brackets. In short: 319-equivalent general workhorse; 200 °C service capability; low hot-tearing tendency.
What is the yield strength of ZL107?
ZL107 has a typical yield strength of 180 MPa (26.1 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 54% of aluminum grades. Strength varies by condition: see the 4 listed tempers.
Is ZL107 easy to machine?
Reasonably — machinability is rated good (65/100, better than 62% of aluminum grades). Machines well for a casting alloy thanks to the Cu content and T6 hardness; use PCD or carbide tooling because of the eutectic Si and expect abrasive tool wear.
Can ZL107 be welded?
With care — weldability is rated fair (35/100). TIG/MIG repair is possible with 4043/4047 filler but the ~4 % Cu makes it hot-crack sensitive; preheat and re-heat-treat locally repaired structural castings.
What surface finishes work on ZL107?
Takes paint and chromate/phosphate conversion coatings well; anodizing yields only a dark grey film, so use hard-coat only for wear, not appearance.
Can ZL107 be formed, bent or molded?
Excellent fluidity and low hot-tearing tendency in sand and permanent-mould casting; feed heavy sections well and degas the melt to avoid porosity.
What is the maximum service temperature of ZL107?
ZL107 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 ZL107-T6 and ZL107-F?
T6 is the default condition — standard strengthened condition for structural sand castings needing ≥245 MPa tensile strength. F: lowest-cost condition for lightly loaded general castings where heat treatment is not justified. Yield strength is 180 MPa in T6 versus 120 MPa in F.
How much does ZL107 cost?
ZL107 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
- ASM Handbook Vol.2: Properties and Selection — Nonferrous Alloys (319.0) — ASM International (1990)
- ASM Handbook Vol.15: Casting — ASM International (2008)
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.