Zinc Alloy Zamak 2 · finish state · default condition
Zinc Alloy Zamak 2 As Cast
Properties of the As Cast condition, compared with the other Zamak 2 tempers.
Standard supply condition for pressure die-cast Zamak 2 parts; highest strength and hardness of the Zamak family.
What is Zamak 2 As Cast?
Zamak 2 As Cast is Zamak 2 supplied in the As Cast condition — standard supply condition for pressure die-cast Zamak 2 parts; highest strength and hardness of the Zamak family. Zamak 2 As Cast has a yield strength of 283 MPa (41 ksi) and a tensile strength of 359 MPa (52.1 ksi) — stronger than 86% of zinc alloy grades. Elongation at break is 7% and the elastic modulus is 96 GPa (13.9 Msi). Zamak 2 As Cast has a density of 6.6 g/cm³ (0.238 lb/in³), lighter than 64% of zinc alloy grades. It melts at 379°C (714 °F).
Advantages
- High strength — 283 MPa (41 ksi), better than 86% of zinc alloy grades
Limitations
- Limited formability — 15/100, worse than 79% of zinc alloy grades
Zamak 2 As Cast properties
Typical room-temperature values for Zamak 2 As Cast — 10 properties are specific to this condition; the rest are grade-level values shared by every Zamak 2 temper. Each bar shows where the value sits among the zinc alloy grades in FabDigit's library — further right is higher.
Physical3
Zamak 2 As Cast has a density of 6.6 g/cm³ (0.238 lb/in³), lighter than 64% of zinc alloy grades. It melts at 379°C (714 °F).
Mechanical12
Zamak 2 As Cast has a yield strength of 283 MPa (41 ksi) and a tensile strength of 359 MPa (52.1 ksi) — stronger than 86% of zinc alloy grades. Elongation at break is 7% and the elastic modulus is 96 GPa (13.9 Msi).
Thermal6
Zamak 2 As Cast is rated for continuous service to 100°C (212 °F). It conducts heat at 105 W/m·K (60.7 BTU/hr·ft·°F), worse than 100% of zinc alloy grades. Thermal expansion is 27.8 µm/m·K (15.4 µin/in·°F).
Electrical3
Zamak 2 As Cast conducts electricity at 25 % IACS, worse than 100% of zinc alloy grades.
Chemical & Environmental3
Corrosion resistance is fair (40/100), better than 50% of zinc alloy grades.
Sustainability4
Producing a kilogram of Zamak 2 As Cast takes about 56 MJ of energy and emits 3.6 kg of CO₂ — more than 79% of zinc alloy grades. Typical recycled content is 25%.
Manufacturability8
Zamak 2 As Cast's machinability is very good (80/100, better than 64% of zinc alloy grades); weldability poor (20/100); 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.
Other Zamak 2 tempers and conditions
Zamak 2 is also supplied in 2 other conditions. The full side-by-side table is on the Zamak 2 overview.
- As CastDefaultStandard supply condition for pressure die-cast Zamak 2 parts; highest strength and hardness of the Zamak family.283 MPa yield · 100 HB
Working with Zamak 2 As Cast
Is Zamak 2 easy to machine?
Cuts very freely with sharp carbide or HSS tools at high speed, little or no coolant, excellent surface finish and tight tolerances.
Can Zamak 2 be welded?
Not a structural welding alloy; only zinc-alloy TIG/torch repair of castings, and soft soldering with zinc-compatible flux.
Can Zamak 2 be formed, bent or molded?
Hot-chamber die casting at ~415–430 °C with thin walls and fine detail; also gravity cast into slabs for press/blow-mould tooling.
What surface finishes work on Zamak 2?
Buffs to a bright finish; typical routes are Cu-Ni-Cr electroplating, chromate/phosphate conversion plus paint or powder coat — do not anodize.
Zamak 2 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 |
|---|---|---|
| Al | 3.9 – 4.3 | 4.1 |
| Cu | 2.7 – 3.3 | 3 |
| Mg | 0.03 – 0.05 | 0.04 |
| Feimpurity max (die casting) | ≤ 0.1 | — |
| Pbimpurity max | ≤ 0.01 | — |
| Cdimpurity max | ≤ 0 | — |
| Snimpurity max | ≤ 0 | — |
| Znspecial high grade zinc, 99.99% base | balance | — |
Zamak 2 As Cast — frequently asked
What is Zamak 2 As Cast used for?
Zamak 2 As Cast is typically used for door hardware, padlock bodies, lock cylinders and latch housings, wear-resistant bushings and sleeves, gravity-cast slabs for press and blow-mould tooling and hand-tool bodies and handles. In short: high-strength die-cast zinc.
What is the yield strength of Zamak 2 As Cast?
Zamak 2 As Cast has a typical yield strength of 283 MPa (41 ksi) and a tensile strength of 359 MPa (52.1 ksi) — stronger than 86% of zinc alloy grades. Strength varies by condition: see the 3 listed tempers.
Is Zamak 2 As Cast easy to machine?
Yes — machinability is rated very good (80/100, better than 64% of zinc alloy grades). Cuts very freely with sharp carbide or HSS tools at high speed, little or no coolant, excellent surface finish and tight tolerances.
Can Zamak 2 As Cast be welded?
Not readily — weldability is rated poor (20/100). Not a structural welding alloy; only zinc-alloy TIG/torch repair of castings, and soft soldering with zinc-compatible flux.
What surface finishes work on Zamak 2 As Cast?
Buffs to a bright finish; typical routes are Cu-Ni-Cr electroplating, chromate/phosphate conversion plus paint or powder coat — do not anodize.
Can Zamak 2 As Cast be formed, bent or molded?
Hot-chamber die casting at ~415–430 °C with thin walls and fine detail; also gravity cast into slabs for press/blow-mould tooling.
What is the maximum service temperature of Zamak 2 As Cast?
Zamak 2 As Cast 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 Zamak 2 As Cast and Zamak 2 Aged?
As Cast is the default condition — standard supply condition for pressure die-cast Zamak 2 parts; highest strength and hardness of the Zamak family. Aged: use these de-rated values for long-service or dimensionally stabilized parts, where the metastable cast structure has decomposed. Yield strength is 283 MPa in As Cast versus 255 MPa in Aged.
Can FabDigit make parts in Zamak 2 As Cast?
Yes — Zamak 2 As Cast is available for CNC machining with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B86 — Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings (alloy AC43A) — ASTM International (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys (Zinc Alloys) — ASM International (1990)
- Zinc Die Casting Alloys Engineering Properties — ILZRO / IZA (2010)
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.