Aluminum ATP-5 · other
Aluminum ATP-5-STD
Properties of the STD condition, compared with the other ATP-5 tempers.
Default and essentially only commercial supply condition: low-stress cast plate machined to tight flatness/thickness for jigs, fixtures and mould bases.
What is ATP-5-STD?
ATP-5-STD is ATP-5 in the STD condition — default and essentially only commercial supply condition: low-stress cast plate machined to tight flatness/thickness for jigs, fixtures and mould bases. ATP-5-STD has a yield strength of 110 MPa (16 ksi) and a tensile strength of 165 MPa (23.9 ksi) — weaker than 81% of aluminum grades. Elongation at break is 3% and the elastic modulus is 71 GPa (10.3 Msi). ATP-5-STD has a density of 2.78 g/cm³ (0.1 lb/in³), heavier than 74% of aluminum grades. It melts at 580°C (1,076 °F).
Advantages
- Easy to machine — 92/100, better than 99% of aluminum grades
Limitations
- Hard to polish — 35/100, worse than 98% of aluminum grades
- Low strength — 110 MPa (16 ksi), worse than 81% of aluminum grades
- Limited formability — 10/100, worse than 81% of aluminum grades
- Limited ductility — 3%, worse than 79% of aluminum grades
ATP-5-STD properties
Typical room-temperature values for ATP-5-STD — 11 properties are specific to this condition; the rest are grade-level values shared by every ATP-5 temper. Each bar shows where the value sits among the aluminum grades in FabDigit's library — further right is higher.
Physical3
ATP-5-STD has a density of 2.78 g/cm³ (0.1 lb/in³), heavier than 74% of aluminum grades. It melts at 580°C (1,076 °F).
Mechanical11
ATP-5-STD has a yield strength of 110 MPa (16 ksi) and a tensile strength of 165 MPa (23.9 ksi) — weaker than 81% of aluminum grades. Elongation at break is 3% and the elastic modulus is 71 GPa (10.3 Msi).
Thermal6
ATP-5-STD is rated for continuous service to 150°C (302 °F). It conducts heat at 142 W/m·K (82 BTU/hr·ft·°F), better than 51% of aluminum grades. Thermal expansion is 24 µm/m·K (13.3 µin/in·°F).
Electrical3
ATP-5-STD conducts electricity at 40 % IACS, better than 72% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 51% of aluminum grades.
Sustainability4
Producing a kilogram of ATP-5-STD takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 60%.
Manufacturability8
ATP-5-STD's machinability is excellent (92/100, better than 99% of aluminum grades); weldability fair (50/100); formability not recommended (10/100).
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other ATP-5 tempers and conditions
ATP-5 is also supplied in 1 other condition. The full side-by-side table is on the ATP-5 overview.
- STDDefault and essentially only commercial supply condition: low-stress cast plate machined to tight flatness/thickness for jigs, fixtures and mould bases.110 MPa yield · 65 HB
Working with ATP-5-STD
Is ATP-5 easy to machine?
Machines very freely with sharp polished-flute carbide tools and high speeds; low residual stress means minimal movement after heavy pocketing, but expect slightly abrasive cast surface skin on the first cut.
Can ATP-5 be welded?
TIG/MIG weldable with 5356 filler for repairs only — casting porosity causes gas pick-up and welds are not strength- or leak-rated.
Can ATP-5 be formed, bent or molded?
Not a forming stock: elongation of ~3 % means it will crack on bending or spinning; use only in the flat machined state.
What surface finishes work on ATP-5?
Bead blast, paint or hardcoat for wear surfaces; decorative anodizing gives mottled colour, and vacuum-tight surfaces may need impregnation.
ATP-5 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 |
|---|---|---|
| Mgprincipal alloying element of the Al-Mg cast tooling-plate class; confirm on mill certificate | 0.6 – 1.3 | 1 |
| Sitypical max | ≤ 0.4 | 0.2 |
| Fetypical max | ≤ 0.5 | 0.3 |
| Cutypical max | ≤ 0.3 | 0.1 |
| Mntypical max | ≤ 0.3 | 0.1 |
| Zntypical max | ≤ 0.3 | 0.1 |
| Tigrain refiner | ≤ 0.2 | 0.05 |
| Al | balance | — |
ATP-5-STD — frequently asked
What is ATP-5-STD used for?
ATP-5-STD is typically used for vacuum platens, index and locating plates, inspection and checking fixtures, mould base and die set plates, semiconductor equipment base plates and packaging machinery frame plates. In short: stress-relieved cast tool plate.
What is the yield strength of ATP-5-STD?
ATP-5-STD has a typical yield strength of 110 MPa (16 ksi) and a tensile strength of 165 MPa (23.9 ksi) — weaker than 81% of aluminum grades. Strength varies by condition: see the 2 listed tempers.
Is ATP-5-STD easy to machine?
Yes — machinability is rated excellent (92/100, better than 99% of aluminum grades). Machines very freely with sharp polished-flute carbide tools and high speeds; low residual stress means minimal movement after heavy pocketing, but expect slightly abrasive cast surface skin on the first cut.
Can ATP-5-STD be welded?
With care — weldability is rated fair (50/100). TIG/MIG weldable with 5356 filler for repairs only — casting porosity causes gas pick-up and welds are not strength- or leak-rated.
What surface finishes work on ATP-5-STD?
Bead blast, paint or hardcoat for wear surfaces; decorative anodizing gives mottled colour, and vacuum-tight surfaces may need impregnation.
Can ATP-5-STD be formed, bent or molded?
Not a forming stock: elongation of ~3 % means it will crack on bending or spinning; use only in the flat machined state.
What is the maximum service temperature of ATP-5-STD?
ATP-5-STD 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.
Can FabDigit make parts in ATP-5-STD?
Yes — ATP-5-STD is available for CNC machining with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- ATP-5 cast aluminium tooling plate data sheet — Alimex GmbH / Alimex America (2023)
- Cast aluminium tooling plate (MIC-6 / ALCA 5 class) property sheets — Arconic / Clinton Aluminum (2022)
- ASM Handbook Vol. 2: Properties and Selection — Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B: Corrosion — Materials — ASM International (2005)
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.