Aluminum ZL112-F (As fabricated)
Temper · default condition
GB ZL112
Default supply condition: lowest cost, adequate strength for general housings and pressure-tight castings.
Values for the F condition
Other ZL112 tempers and conditions
ZL112 is listed in 4 conditions; see the grade overview at ZL112.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
FDefaultThis page As fabricated | Default supply condition: lowest cost, adequate strength for general housings and pressure-tight castings. | 130 | 235 | 2.5 | 85 HB | 27 % IACS |
Solution heat treated and overaged (stabilized) | Use for parts that run hot or must hold dimensions long term; trades peak strength for stability and slightly better ductility. | 165 | 245 | 3 | 85 HB | 30 % IACS |
Cooled from hot working and artificially aged | Choose when higher hardness and dimensional stability are needed without the distortion risk of solution quenching. | 180 | 250 | 1.5 | 95 HB | 28 % IACS |
Solution heat treated and artificially aged | Highest strength condition — pick for structurally loaded castings where some distortion and extra cost are acceptable. | 185 | 275 | 3 | 95 HB | 28 % IACS |
What is ZL112-F?
ZL112-F is ZL112 in the F temper — default supply condition: lowest cost, adequate strength for general housings and pressure-tight castings. ZL112-F has a yield strength of 130 MPa (18.9 ksi) and a tensile strength of 235 MPa (34.1 ksi) — weaker than 73% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 74 GPa (10.7 Msi). ZL112-F has a density of 2.79 g/cm³ (0.101 lb/in³), heavier than 77% of aluminum grades. It melts at 516°C (961 °F).
Advantages
- High service temperature — 200°C (392 °F), better than 90% of aluminum grades
Limitations
- Hard to polish — 35/100, worse than 98% of aluminum grades
- Limited formability — 5/100, worse than 94% of aluminum grades
- Poor heat conductor — 109 W/m·K (63 BTU/hr·ft·°F), worse than 90% of aluminum grades
- Low electrical conductivity — 27 % IACS, worse than 86% of aluminum grades
- Limited ductility — 2.5%, worse than 83% of aluminum grades
ZL112-F properties
Typical room-temperature values for ZL112-F; 10 are specific to this condition. Other listed values are ZL112 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
ZL112-F has a density of 2.79 g/cm³ (0.101 lb/in³), heavier than 77% of aluminum grades. It melts at 516°C (961 °F).
Mechanical12
ZL112-F has a yield strength of 130 MPa (18.9 ksi) and a tensile strength of 235 MPa (34.1 ksi) — weaker than 73% of aluminum grades. Elongation at break is 2.5% and the elastic modulus is 74 GPa (10.7 Msi).
Thermal6
ZL112-F is rated for continuous service to 200°C (392 °F). It conducts heat at 109 W/m·K (63 BTU/hr·ft·°F), worse than 90% of aluminum grades. Thermal expansion is 21.5 µm/m·K (11.9 µin/in·°F).
Electrical3
ZL112-F 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 ZL112-F takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 80%.
Manufacturability7
ZL112-F's machinability is good (65/100, better than 62% of aluminum grades); weldability fair (45/100); formability not recommended (5/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ZL112-F
Is ZL112 easy to machine?
Machines well with carbide or PCD tooling and free chip breaking; primary Si particles cause abrasive wear, so use high speed, positive rake and flood coolant.
Can ZL112 be welded?
Fair — repair welding with 4043 or 4145 filler is possible but Cu content raises hot-cracking risk; preheat 150–200 °C and re-age heat-treated parts after welding.
Can ZL112 be formed, bent or molded?
Foundry alloy only: good fluidity and pressure tightness for sand, permanent-mold and low-pressure casting; feed heavy sections well and control Fe to avoid brittle needles.
What surface finishes work on ZL112?
Best finished by chromate/anodic hard coat, powder coat or paint; decorative sulfuric anodizing gives a dark blotchy gray because of Si and Cu, and Cu content lowers coating corrosion life.
ZL112 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 |
|---|---|---|
| Siper AA 319.0; Chinese literature describes ZL112 as an AlSi9Cu2-type alloy, so verify Si level with the foundry (8–10 % in some AlSi9Cu2 chemistries) | 5.5 – 6.5 | 6 |
| Cusome AlSi9Cu2 chemistries run 1.5–2.5 % Cu | 3 – 4 | 3.5 |
| Fe0.8 max for sand castings | ≤ 1 | 0.6 |
| Mn | ≤ 0.5 | 0.2 |
| Mghigher Mg (0.2–0.5) in the 319-derived heat-treatable variants | ≤ 0.1 | 0.05 |
| Ni | ≤ 0.35 | — |
| Zn | ≤ 1 | 0.3 |
| Tigrain refiner | ≤ 0.25 | 0.1 |
| Others (total) | ≤ 0.5 | — |
| Al | balance | — |
ZL112-F — frequently asked
What is ZL112-F used for?
ZL112-F is typically used for pump housings, valve bodies, engine blocks and crankcases, gearbox and transmission housings, hydraulic manifolds and compressor bodies. In short: pressure-tight Al-Si-Cu workhorse; good castability, moderate strength; copper limits corrosion life.
What is the yield strength of ZL112-F?
ZL112-F has a typical yield strength of 130 MPa (18.9 ksi) and a tensile strength of 235 MPa (34.1 ksi) — weaker than 73% of aluminum grades. Strength varies by condition: see the 4 listed tempers.
Is ZL112-F easy to machine?
Reasonably — machinability is rated good (65/100, better than 62% of aluminum grades). Machines well with carbide or PCD tooling and free chip breaking; primary Si particles cause abrasive wear, so use high speed, positive rake and flood coolant.
Can ZL112-F be welded?
With care — weldability is rated fair (45/100). Fair — repair welding with 4043 or 4145 filler is possible but Cu content raises hot-cracking risk; preheat 150–200 °C and re-age heat-treated parts after welding.
What surface finishes work on ZL112-F?
Best finished by chromate/anodic hard coat, powder coat or paint; decorative sulfuric anodizing gives a dark blotchy gray because of Si and Cu, and Cu content lowers coating corrosion life.
Can ZL112-F be formed, bent or molded?
Foundry alloy only: good fluidity and pressure tightness for sand, permanent-mold and low-pressure casting; feed heavy sections well and control Fe to avoid brittle needles.
What is the maximum service temperature of ZL112-F?
ZL112-F 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 ZL112-F and ZL112-T6?
F is the default condition — default supply condition: lowest cost, adequate strength for general housings and pressure-tight castings. T6: highest strength condition — pick for structurally loaded castings where some distortion and extra cost are acceptable. Yield strength is 130 MPa in F versus 185 MPa in T6.
Sources
- GB/T 1173 Casting aluminium alloys — SAC (2013)
- ASTM B26/B26M Aluminum-Alloy Sand Castings — ASTM (2018)
- ASTM B108/B108M Aluminum-Alloy Permanent Mold Castings — ASTM (2019)
- ASM Handbook Vol.2 — Properties of Aluminum Casting Alloys (319.0) — ASM International (1990)
- International Alloy Designations and Chemical Composition Limits for Aluminum Alloys in the Form of Castings and Ingot (Pink Sheets) — The Aluminum Association (2019)
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.