Aluminum ADC10-O (Annealed)
Temper
JIS ADC10
Rarely ordered; a low-temperature anneal used to relieve casting stresses when tight post-machining stability is required, at the cost of strength.
Values for the O condition
Other ADC10 tempers and conditions
ADC10 is listed in 4 conditions; see the grade overview at ADC10.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
OThis page Annealed | Rarely ordered; a low-temperature anneal used to relieve casting stresses when tight post-machining stability is required, at the cost of strength. | 120 | 250 | 5 | 65 HB | 28 % IACS |
FDefault As fabricated | Standard supply condition for essentially all ADC10 die castings; no heat treatment, best dimensional stability. | 160 | 320 | 3 | 80 HB | 23 % IACS |
High-Zn tolerance variant | JIS variant that tolerates up to ~3 % Zn from secondary scrap; used for non-critical cost-driven castings where corrosion exposure is low. | 165 | 320 | 2.5 | 82 HB | 22 % IACS |
Cooled from hot working and artificially aged | Choose when parts need dimensional stability after machining or a modest strength/hardness bump without the blistering risk of solution treatment. | 185 | 330 | 2.5 | 88 HB | 26 % IACS |
What is ADC10-O?
ADC10-O is ADC10 in the O temper — rarely ordered; a low-temperature anneal used to relieve casting stresses when tight post-machining stability is required, at the cost of strength. ADC10-O has a yield strength of 120 MPa (17.4 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 77% of aluminum grades. Elongation at break is 5% and the elastic modulus is 71 GPa (10.3 Msi). ADC10-O has a density of 2.76 g/cm³ (0.0997 lb/in³), heavier than 70% of aluminum grades. It melts at 540°C (1,004 °F). F is the default condition FabDigit quotes; O is available on request or by drawing note.
Advantages
- High service temperature — 200°C (392 °F), better than 90% of aluminum grades
Limitations
- Hard to polish — 40/100, worse than 91% of aluminum grades
- Poor heat conductor — 110 W/m·K (63.6 BTU/hr·ft·°F), worse than 88% of aluminum grades
- Low electrical conductivity — 28 % IACS, worse than 82% of aluminum grades
- Low strength — 120 MPa (17.4 ksi), worse than 77% of aluminum grades
ADC10-O properties
Typical room-temperature values for ADC10-O; 22 are specific to this condition. Other listed values are ADC10 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
ADC10-O has a density of 2.76 g/cm³ (0.0997 lb/in³), heavier than 70% of aluminum grades. It melts at 540°C (1,004 °F).
Mechanical14
ADC10-O has a yield strength of 120 MPa (17.4 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 77% of aluminum grades. Elongation at break is 5% and the elastic modulus is 71 GPa (10.3 Msi).
Thermal6
ADC10-O 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 21.8 µm/m·K (12.1 µin/in·°F).
Electrical3
ADC10-O conducts electricity at 28 % IACS, worse than 82% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (45/100), worse than 62% of aluminum grades.
Sustainability4
Producing a kilogram of ADC10-O takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 85%.
Manufacturability8
ADC10-O's machinability is very good (70/100, better than 72% of aluminum grades); weldability poor (30/100); formability poor (16/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ADC10-O
Is ADC10 easy to machine?
Machines freely with sharp PCD or polished-carbide tooling and high speeds; the eutectic Si is abrasive so PCD is preferred for volume, and subsurface porosity can appear when heavy stock is removed.
Can ADC10 be welded?
Not recommended for structural fusion welding — entrapped gas causes blowholes and Cu promotes hot cracking; use mechanical fastening, adhesive, or friction-stir/laser only on vacuum-cast parts.
Can ADC10 be formed, bent or molded?
Designed for cold-chamber high-pressure die casting: excellent fluidity for 1–2 mm walls, low hot-tear tendency, and stable die life at ~660–700 °C pour with proper Fe control.
What surface finishes work on ADC10?
Decorative anodizing is poor (dark, blotchy); specify chromate/trivalent conversion coating, powder coat, e-coat or paint, and hard anodize only where a functional grey wear layer is acceptable.
ADC10 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 |
|---|---|---|
| Sifluidity, wear resistance | 7.5 – 9.5 | 8.5 |
| Custrength and machinability; reduces corrosion resistance | 2 – 4 | 3 |
| Fedie soldering control; >1.0 % embrittles | ≤ 1.3 | 0.9 |
| Mg | ≤ 0.3 | 0.1 |
| Mn | ≤ 0.5 | 0.2 |
| Znup to ~3 % in ADC10Z | ≤ 1 | 0.5 |
| Ni | ≤ 0.5 | 0.1 |
| Sn | ≤ 0.3 | 0.05 |
| Al | balance | — |
ADC10-O — frequently asked
What is ADC10-O used for?
ADC10-O is typically used for automotive brackets, electronics housings and appliance parts. In short: machinable general-purpose die casting; higher strength than ADC12; poor weldability and corrosion.
What is the yield strength of ADC10-O?
ADC10-O has a typical yield strength of 120 MPa (17.4 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 77% of aluminum grades. Strength varies by condition: see the 4 listed tempers.
Is ADC10-O easy to machine?
Yes — machinability is rated very good (70/100, better than 72% of aluminum grades). Machines freely with sharp PCD or polished-carbide tooling and high speeds; the eutectic Si is abrasive so PCD is preferred for volume, and subsurface porosity can appear when heavy stock is removed.
Can ADC10-O be welded?
Not readily — weldability is rated poor (30/100). Not recommended for structural fusion welding — entrapped gas causes blowholes and Cu promotes hot cracking; use mechanical fastening, adhesive, or friction-stir/laser only on vacuum-cast parts.
What surface finishes work on ADC10-O?
Decorative anodizing is poor (dark, blotchy); specify chromate/trivalent conversion coating, powder coat, e-coat or paint, and hard anodize only where a functional grey wear layer is acceptable.
Can ADC10-O be formed, bent or molded?
Designed for cold-chamber high-pressure die casting: excellent fluidity for 1–2 mm walls, low hot-tear tendency, and stable die life at ~660–700 °C pour with proper Fe control.
What is the maximum service temperature of ADC10-O?
ADC10-O 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 ADC10-F and ADC10-O?
F is the default condition — standard supply condition for essentially all ADC10 die castings; no heat treatment, best dimensional stability. O: rarely ordered; a low-temperature anneal used to relieve casting stresses when tight post-machining stability is required, at the cost of strength. Yield strength is 160 MPa in F versus 120 MPa in O.
Sources
- JIS H 5302 Aluminium alloy die castings — JSA (2006)
- GB/T 15115 (YL112) — SAC (2009)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys (A380.0) — ASM International (1990)
- ASTM B85 / B85M Aluminum-Alloy Die Castings — ASTM (2018)
- Aluminum Association Casting Alloy Registration (Pink Sheets) — The Aluminum Association (2018)
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.