Aluminum 358.0-T62
Temper
AA 358.0
T62 = t6, heat treated by the user
Peak-aged condition for maximum strength in aerospace and highly loaded castings, at the cost of ductility and toughness.
Values for the T62 condition
Other 358.0 tempers and conditions
358.0 is listed in 6 conditions; see the grade overview at 358.0.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | Untreated castings used only as an intermediate state before solution treatment, or for non-structural parts. | 95 | 180 | 6 | 55 HB | 41 % IACS |
Cooled from hot working and artificially aged | Low-cost partial strengthening with no solution treatment; used when distortion from quenching must be avoided. | 150 | 205 | 3 | 70 HB | 42 % IACS |
Solution heat treated and overaged (stabilized) | Overaged for dimensional stability and lower residual stress where elevated-temperature service or machining stability governs. | 220 | 275 | 6 | 85 HB | 42 % IACS |
T6 variant, underaged | Underaged/controlled-age variant chosen when higher elongation and toughness matter more than peak yield strength. | 250 | 320 | 8 | 90 HB | 39 % IACS |
T6Default Solution heat treated and artificially aged | Standard supply condition: best balance of strength and ductility for structural sand, permanent-mold and investment castings. | 275 | 345 | 5 | 100 HB | 39 % IACS |
T62This page T6, heat treated by the user | Peak-aged condition for maximum strength in aerospace and highly loaded castings, at the cost of ductility and toughness. | 290 | 379 | 5 | 110 HB | 38 % IACS |
What is 358.0-T62?
358.0-T62 is 358.0 in the T62 temper — peak-aged condition for maximum strength in aerospace and highly loaded castings, at the cost of ductility and toughness. 358.0-T62 has a yield strength of 290 MPa (42.1 ksi) and a tensile strength of 379 MPa (55 ksi) — stronger than 74% of aluminum grades. Elongation at break is 5% and the elastic modulus is 72 GPa (10.4 Msi). 358.0-T62 has a density of 2.68 g/cm³ (0.0968 lb/in³), lighter than 72% of aluminum grades. It melts at 557°C (1,035 °F). T6 is the default condition FabDigit quotes; T62 is available on request or by drawing note.
Limitations
- Limited formability — 10/100, worse than 80% of aluminum grades
358.0-T62 properties
Typical room-temperature values for 358.0-T62; 13 are specific to this condition. Other listed values are 358.0 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
358.0-T62 has a density of 2.68 g/cm³ (0.0968 lb/in³), lighter than 72% of aluminum grades. It melts at 557°C (1,035 °F).
Mechanical11
358.0-T62 has a yield strength of 290 MPa (42.1 ksi) and a tensile strength of 379 MPa (55 ksi) — stronger than 74% of aluminum grades. Elongation at break is 5% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
358.0-T62 is rated for continuous service to 150°C (302 °F). It conducts heat at 149 W/m·K (86.1 BTU/hr·ft·°F), better than 56% of aluminum grades. Thermal expansion is 21.5 µm/m·K (11.9 µin/in·°F).
Electrical3
358.0-T62 conducts electricity at 38 % IACS, better than 61% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (56/100), better than 52% of aluminum grades.
Sustainability4
Producing a kilogram of 358.0-T62 takes about 200 MJ of energy and emits 12.5 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 15%.
Manufacturability8
358.0-T62's machinability is good (62/100, better than 55% of aluminum grades); weldability very good (70/100); formability not recommended (10/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 358.0-T62
Is 358.0 easy to machine?
Machines well with sharp PCD or polished carbide tooling, high speed and flood coolant; the hard eutectic Si is abrasive so HSS tool life is short.
Can 358.0 be welded?
GTAW/GMAW with 4043 or 4047 filler is routine for repair, but the joint must be re-solution treated and aged to recover T6 properties; beryllium fume extraction is mandatory.
Can 358.0 be formed, bent or molded?
A casting alloy only — excellent fluidity and pressure tightness in sand, permanent-mold and investment casting; use chills and directional solidification, HIP for aerospace class-A parts.
What surface finishes work on 358.0?
Takes sulfuric and hard-coat anodizing for protection (dark grey cosmetic due to Si), chromate/trivalent conversion coating and primer-paint systems; bright decorative anodizing is not practical.
358.0 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 | 7.6 – 8.6 | 8.1 |
| Mg | 0.4 – 0.6 | 0.5 |
| BeBeryllium addition — melting/welding fume requires dedicated extraction and PPE | 0.1 – 0.3 | 0.18 |
| Tigrain refinement | 0.1 – 0.2 | 0.15 |
| Feimpurity limit | ≤ 0.2 | — |
| Cuimpurity limit | ≤ 0.2 | — |
| Mnimpurity limit | ≤ 0.2 | — |
| Znimpurity limit | ≤ 0.1 | — |
| Others (each) | ≤ 0.05 | — |
| Others (total) | ≤ 0.15 | — |
| Al | balance | — |
358.0-T62 — frequently asked
What is 358.0-T62 used for?
358.0-T62 is typically used for general-purpose sand castings, permanent-mold pump and valve bodies, pressure-tight manifold and housing castings, aerospace brackets and fittings in T6, investment-cast structural components and gearbox cases and covers. In short: heat-treatable Al-Si-Mg casting alloy; good castability, moderate strength; beryllium-bearing; fume control needed.
What is the yield strength of 358.0-T62?
358.0-T62 has a typical yield strength of 290 MPa (42.1 ksi) and a tensile strength of 379 MPa (55 ksi) — stronger than 74% of aluminum grades. Strength varies by condition: see the 6 listed tempers.
Is 358.0-T62 easy to machine?
Reasonably — machinability is rated good (62/100, better than 55% of aluminum grades). Machines well with sharp PCD or polished carbide tooling, high speed and flood coolant; the hard eutectic Si is abrasive so HSS tool life is short.
Can 358.0-T62 be welded?
Yes — weldability is rated very good (70/100). GTAW/GMAW with 4043 or 4047 filler is routine for repair, but the joint must be re-solution treated and aged to recover T6 properties; beryllium fume extraction is mandatory.
What surface finishes work on 358.0-T62?
Takes sulfuric and hard-coat anodizing for protection (dark grey cosmetic due to Si), chromate/trivalent conversion coating and primer-paint systems; bright decorative anodizing is not practical.
Can 358.0-T62 be formed, bent or molded?
A casting alloy only — excellent fluidity and pressure tightness in sand, permanent-mold and investment casting; use chills and directional solidification, HIP for aerospace class-A parts.
What is the maximum service temperature of 358.0-T62?
358.0-T62 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.
What is the difference between 358.0-T6 and 358.0-F?
T6 is the default condition — standard supply condition: best balance of strength and ductility for structural sand, permanent-mold and investment castings. F: untreated castings used only as an intermediate state before solution treatment, or for non-structural parts. Yield strength is 275 MPa in T6 versus 95 MPa in F.
Sources
- Registration Record of International Alloy Designations and Chemical Composition Limits for Aluminum Alloys in the Form of Castings and Ingot (Pink Sheets) — The Aluminum Association (2019)
- ASTM B26/B26M — Aluminum-Alloy Sand Castings — ASTM International (2018)
- ASTM B108/B108M — Aluminum-Alloy Permanent Mold Castings — ASTM International (2019)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Specialty Handbook: Aluminum and Aluminum Alloys — ASM International (1993)
- ASM Handbook Vol. 19 — Fatigue and Fracture — ASM International (1996)
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.