Aluminum 7093
AA 7093 · UNS A97093
7093 (A97093) is an ultra-high-strength Al-Zn-Mg-Cu alloy developed by Alcoa for parts needing more strength-to-weight than standard 7000-series grades, listed in F, T6, T651, T76 and T73.
Reference datasheet — 7093 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the T6 condition
7093 tempers and conditions
7093 is supplied in 5 conditions, soft to hard. T6 is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | Semi-finished billet/extrusion stock bought for subsequent solution treatment and aging; no guaranteed mechanical properties. | 290 | 400 | 12 | 110 HB | 38 % IACS |
Solution heat treated and overaged for stress-corrosion resistance | Pick when parts see marine/humid service or sustained tensile stress and SCC must be avoided; ~12–15 % strength penalty. | 550 | 615 | 12 | 158 HB | 38 % IACS |
Overaged for exfoliation-corrosion resistance | Intermediate over-age: keeps most of the T6 strength while markedly improving exfoliation/SCC behaviour. | 600 | 655 | 11 | 9 HRC | 35 % IACS |
T6, stress relieved by stretching | Choose for plate that will be heavily machined and must stay dimensionally stable at near-peak strength. | 635 | 690 | 10 | 12 HRC | 31 % IACS |
T6Default Solution heat treated and artificially aged | Default condition: maximum strength for sporting-goods and high-performance structural parts where chloride exposure is limited. | 648 | 703 | 10 | 180 HB | 31 % IACS |
What is 7093?
7093 (A97093) is an ultra-high-strength Al-Zn-Mg-Cu alloy developed by Alcoa for parts needing more strength-to-weight than standard 7000-series grades, listed in F, T6, T651, T76 and T73. Typical T6 properties are 648 MPa yield, 703 MPa tensile, 10% elongation and 180 HB with 140 W/m·K conductivity, which suits machined sporting goods and aerospace fittings. Formability (15/100) and corrosion resistance (30/100) are low, it is not fusion weldable, and service is limited to 120 °C. Availability is restricted, so 7068 or 7075 are the practical alternatives. 7093 has a density of 2.86 g/cm³ (0.103 lb/in³), heavier than 97% of aluminum grades. It melts at 475°C (887 °F). 7093 has a yield strength of 648 MPa (94 ksi) and a tensile strength of 703 MPa (102 ksi) — stronger than 100% of aluminum grades. Elongation at break is 10% and the elastic modulus is 72 GPa (10.4 Msi).
What is 7093 used for?
- golf club heads
- high-performance sporting equipment
- aerospace fittings
Advantages
- High strength — 648 MPa (94 ksi), better than 100% of aluminum grades
- Polishes to a fine finish — 65/100, better than 82% of aluminum grades
Limitations
- Needs corrosion protection — 30/100, worse than 98% of aluminum grades
- Difficult to weld — 12/100, worse than 98% of aluminum grades
- High embodied carbon — 14.5 kg CO₂/kg, worse than 97% of aluminum grades
- Limited service temperature — 120°C (248 °F), worse than 79% of aluminum grades
7093 properties
Typical room-temperature values for 7093-T6; bars are the position among aluminum grades.
Physical3
7093 has a density of 2.86 g/cm³ (0.103 lb/in³), heavier than 97% of aluminum grades. It melts at 475°C (887 °F).
Mechanical13
7093 has a yield strength of 648 MPa (94 ksi) and a tensile strength of 703 MPa (102 ksi) — stronger than 100% of aluminum grades. Elongation at break is 10% and the elastic modulus is 72 GPa (10.4 Msi).
Thermal6
7093 is rated for continuous service to 120°C (248 °F). It conducts heat at 140 W/m·K (80.9 BTU/hr·ft·°F), worse than 52% of aluminum grades. Thermal expansion is 23.4 µm/m·K (13 µin/in·°F).
Electrical3
7093 conducts electricity at 31 % IACS, worse than 68% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is poor (30/100), worse than 98% of aluminum grades.
Sustainability4
Producing a kilogram of 7093 takes about 215 MJ of energy and emits 14.5 kg of CO₂ — more than 93% of aluminum grades. Typical recycled content is 5%.
Manufacturability7
7093's machinability is good (68/100, better than 67% of aluminum grades); weldability not recommended (12/100); 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.
Strength versus weight in the aluminum family
Yield strength against density for every aluminum grade FabDigit runs. 7093 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 7093
Is 7093 easy to machine?
Machines cleanly in T6 with sharp carbide, high speed and flood coolant; chips are short, but the hard Zr/Zn microstructure abrades tooling faster than 7075 and thin walls spring back at high cutting loads.
Can 7093 be welded?
Not recommended for fusion welding (hot cracking, drastic HAZ softening and SCC); join by adhesive bonding, mechanical fasteners or friction stir with post-weld heat treatment.
Can 7093 be formed, bent or molded?
Form only in F or freshly solution-treated (W) condition; T6/T73 stock has very limited cold formability — use generous bend radii or hot forming above 300 °C followed by re-heat-treatment.
7093 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 |
|---|---|---|
| Znprincipal strengthening addition | 8.3 – 9.7 | 9 |
| Mg | 2 – 3 | 2.5 |
| Cu | 1.1 – 1.8 | 1.5 |
| Zrdispersoid for grain-structure control | 0.05 – 0.15 | 0.11 |
| Si | ≤ 0.12 | |
| Fe | ≤ 0.15 | |
| Mn | ≤ 0.1 | |
| Cr | ≤ 0.05 | |
| Ti | ≤ 0.06 | |
| Others (each)0.15 total max | ≤ 0.05 | |
| Al | balance |
What surface finishes work on 7093?
Takes sulfuric and hard anodizing well (slightly darker tone from Zn/Cu), chromate/trivalent conversion coating and paint; shot-peen highly loaded surfaces and avoid peak-aged T6 in bare chloride service.
Surface treatments FabDigit runs on aluminum parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Equivalent designations
Standards and trade names that resolve to Aluminum 7093 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A97093
How much does 7093 cost?
7093 is a high-cost aluminum ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
7093 — frequently asked
What is 7093 used for?
7093 is typically used for golf club heads, high-performance sporting equipment and aerospace fittings. In short: ultra-high-strength 7000-series grade; above 7075 strength; specialty availability only.
What is the yield strength of 7093?
7093 has a typical yield strength of 648 MPa (94 ksi) and a tensile strength of 703 MPa (102 ksi) — stronger than 100% of aluminum grades. Strength varies by condition: see the 5 listed tempers.
Is 7093 easy to machine?
Reasonably — machinability is rated good (68/100, better than 67% of aluminum grades). Machines cleanly in T6 with sharp carbide, high speed and flood coolant; chips are short, but the hard Zr/Zn microstructure abrades tooling faster than 7075 and thin walls spring back at high cutting loads.
Can 7093 be welded?
Not readily — weldability is rated not recommended (12/100). Not recommended for fusion welding (hot cracking, drastic HAZ softening and SCC); join by adhesive bonding, mechanical fasteners or friction stir with post-weld heat treatment.
What surface finishes work on 7093?
Takes sulfuric and hard anodizing well (slightly darker tone from Zn/Cu), chromate/trivalent conversion coating and paint; shot-peen highly loaded surfaces and avoid peak-aged T6 in bare chloride service.
Can 7093 be formed, bent or molded?
Form only in F or freshly solution-treated (W) condition; T6/T73 stock has very limited cold formability — use generous bend radii or hot forming above 300 °C followed by re-heat-treatment.
What is the maximum service temperature of 7093?
7093 is rated for continuous use to about 120°C (248 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 7093-T6 and 7093-F?
T6 is the default condition — default condition: maximum strength for sporting-goods and high-performance structural parts where chloride exposure is limited. F: semi-finished billet/extrusion stock bought for subsequent solution treatment and aging; no guaranteed mechanical properties. Yield strength is 648 MPa in T6 versus 290 MPa in F.
How much does 7093 cost?
7093 is a high-cost aluminum ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- International Alloy Designations and Chemical Composition Limits for Wrought Aluminum (Teal Sheets) — The Aluminum Association (2018)
- ASM Handbook Vol. 2: Properties and Selection — Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol. 7: Powder Metal Technologies and Applications — ASM International (1998)
- Spray-formed / P-M high-strength 7000-series alloy data (7093 and 7093/SiC) — Alcoa / DWA Aluminum Composites (2000)
- ASM Handbook Vol. 13B: Corrosion — Materials (aluminium SCC and galvanic data) — ASM International (2005)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.