Aluminum 3102
AA 3102 · UNS A93102 · EN AW-3102, AlMn0.2
3102 is a low-manganese Al-Mn alloy (UNS A93102, EN AW-3102, AlMn0.2) with modest strength above commercially pure aluminum and near-1000-series conductivity.
Reference datasheet — 3102 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 O condition
3102 tempers and conditions
3102 is supplied in 12 conditions, soft to hard. O is the default FabDigit quotes; the values on this page are for it.
Compare all 12 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ODefault Annealed | Maximum ductility for deep drawing, tube bending and foil rolling stock; lowest strength. | 35 | 90 | 35 | 23 HB | 53 % IACS |
Strain hardened from hot working only | Standard temper for extruded 3102 irrigation and heat-exchanger tube; soft, bendable, guaranteed minimum strength. | 40 | 90 | 25 | 25 HB | 52 % IACS |
Slightly strain hardened | Extruded/drawn product that has picked up slight cold work; near-O ductility with a small strength gain. | 45 | 95 | 30 | 25 HB | 52 % IACS |
As fabricated | Mill/extrusion product supplied without guaranteed mechanical properties, for further working. | 50 | 95 | 25 | 25 HB | 52 % IACS |
Strain hardened and partially annealed, quarter hard | Back-annealed light temper giving H12-level strength with better ductility for tube bending. | 80 | 110 | 16 | 29 HB | 52 % IACS |
Strain hardened, quarter hard | Light cold work for tube and sheet needing a little more stiffness while still bending well. | 90 | 110 | 12 | 30 HB | 52 % IACS |
Strain hardened and partially annealed, half hard | Preferred over H14 when the part must still be bent or flared after forming. | 105 | 130 | 12 | 35 HB | 52 % IACS |
Strain hardened, half hard | Common coil/tube temper balancing moderate strength with acceptable bending. | 115 | 130 | 8 | 36 HB | 52 % IACS |
Strain-hardened and partially annealed, intermediate | Intermediate back-annealed strip temper used for fin and tube stock. | 115 | 140 | 10 | 38 HB | 52 % IACS |
Strain hardened, three-quarter hard | Higher-strength strip for shallow forming and stamped parts. | 135 | 150 | 5 | 42 HB | 51 % IACS |
Strain hardened, full hard | Fully cold-worked strip/foil where maximum strength and flat, stiff stock are required. | 150 | 165 | 4 | 47 HB | 51 % IACS |
Strain hardened, extra hard | Extra-hard thin foil/strip temper used for container, fin and packaging foil. | 165 | 180 | 3 | 50 HB | 50 % IACS |
What is 3102?
3102 is a low-manganese Al-Mn alloy (UNS A93102, EN AW-3102, AlMn0.2) with modest strength above commercially pure aluminum and near-1000-series conductivity. It is used for foil and light-gauge sheet, offering 35 MPa yield, 90 MPa tensile, 35% elongation, 23 HB, 215 W/m·K and 53% IACS annealed, in O, H111/H112, F and the H12–H19/H22–H25 work-hardened tempers. Being non-heat-treatable, its strength comes only from cold work and is lost in the weld zone, and it machines poorly, so it is not suited to load-bearing machined parts. 3003 is the nearest alternative when higher strength is needed. 3102 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 654°C (1,209 °F). 3102 has a yield strength of 35 MPa (5.08 ksi) and a tensile strength of 90 MPa (13.1 ksi) — weaker than 96% of aluminum grades. Elongation at break is 35% and the elastic modulus is 69 GPa (10 Msi).
What is 3102 used for?
- Foil stock
- Light-gauge sheet
- Insulation foil
- General fabrication
Advantages
- Ductile — tolerates forming and impact — 35%, better than 97% of aluminum grades
- Forms and bends easily — 97/100, better than 97% of aluminum grades
- Conducts heat well — 215 W/m·K (124.2 BTU/hr·ft·°F), better than 93% of aluminum grades
- High electrical conductivity — 53 % IACS, better than 92% of aluminum grades
- High service temperature — 200°C (392 °F), better than 90% of aluminum grades
Limitations
- Low strength — 35 MPa (5.08 ksi), worse than 96% of aluminum grades
- Difficult to machine — 25/100, worse than 96% of aluminum grades
3102 properties
Typical room-temperature values for 3102-O; bars are the position among aluminum grades.
Physical3
3102 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 654°C (1,209 °F).
Mechanical10
3102 has a yield strength of 35 MPa (5.08 ksi) and a tensile strength of 90 MPa (13.1 ksi) — weaker than 96% of aluminum grades. Elongation at break is 35% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
3102 is rated for continuous service to 200°C (392 °F). It conducts heat at 215 W/m·K (124.2 BTU/hr·ft·°F), better than 93% of aluminum grades. Thermal expansion is 23.6 µm/m·K (13.1 µin/in·°F).
Electrical3
3102 conducts electricity at 53 % IACS, better than 92% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 83% of aluminum grades.
Sustainability4
Producing a kilogram of 3102 takes about 200 MJ of energy and emits 12 kg of CO₂ — less than 60% of aluminum grades. Typical recycled content is 35%.
Manufacturability7
3102's machinability is poor (25/100, worse than 96% of aluminum grades); weldability excellent (90/100); formability excellent (97/100).
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. 3102 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 3102
Is 3102 easy to machine?
Soft and gummy — use polished high-rake carbide, high speed, generous coolant/lubricant and chip breakers to avoid built-up edge; harder H-tempers cut noticeably cleaner.
Can 3102 be welded?
Excellent for GTAW/GMAW and resistance welding with ER4043 or ER1100 filler; no HAZ quench cracking, but cold-worked tempers fully soften in the weld zone.
Can 3102 be formed, bent or molded?
Outstanding cold formability in O/H1x1 tempers — deep drawing, roll forming, tube bending and foil rolling; anneal at ~345 °C between heavy reductions.
3102 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 |
|---|---|---|
| SiSi+Fe not separately limited | ≤ 0.4 | 0.15 |
| Fe | ≤ 0.7 | 0.4 |
| Cu | ≤ 0.1 | 0.02 |
| Mnprimary strengthening addition | 0.05 – 0.4 | 0.2 |
| Zn | ≤ 0.3 | 0.05 |
| Tigrain refiner residual | ≤ 0.1 | 0.02 |
| Others (each) | ≤ 0.05 | |
| Others (total) | ≤ 0.15 | |
| Al | balance |
What surface finishes work on 3102?
Takes clear and dyed sulfuric anodize well (slightly grey cast from Mn constituents), plus chromate/chrome-free conversion coatings, brazing clad and painted coil finishes.
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 3102 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A93102
- EN / DIN / Werkstoff-Nr.
- AW-3102AlMn0.2
How much does 3102 cost?
3102 is a standard-cost aluminum ($$), cheaper than about 71% 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.
3102 — frequently asked
What is 3102 used for?
3102 is typically used for foil stock, light-gauge sheet, insulation foil and general fabrication. In short: very high formability; high-conductivity foil alloy; low-strength weldable sheet.
What is the yield strength of 3102?
3102 has a typical yield strength of 35 MPa (5.08 ksi) and a tensile strength of 90 MPa (13.1 ksi) — weaker than 96% of aluminum grades. Strength varies by condition: see the 12 listed tempers.
Is 3102 easy to machine?
Not especially — machinability is rated poor (25/100, worse than 96% of aluminum grades). Soft and gummy — use polished high-rake carbide, high speed, generous coolant/lubricant and chip breakers to avoid built-up edge; harder H-tempers cut noticeably cleaner.
Can 3102 be welded?
Yes — weldability is rated excellent (90/100). Excellent for GTAW/GMAW and resistance welding with ER4043 or ER1100 filler; no HAZ quench cracking, but cold-worked tempers fully soften in the weld zone.
What surface finishes work on 3102?
Takes clear and dyed sulfuric anodize well (slightly grey cast from Mn constituents), plus chromate/chrome-free conversion coatings, brazing clad and painted coil finishes.
Can 3102 be formed, bent or molded?
Outstanding cold formability in O/H1x1 tempers — deep drawing, roll forming, tube bending and foil rolling; anneal at ~345 °C between heavy reductions.
What is the maximum service temperature of 3102?
3102 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 3102-O and 3102-H19?
O is the default condition — maximum ductility for deep drawing, tube bending and foil rolling stock; lowest strength. H19: extra-hard thin foil/strip temper used for container, fin and packaging foil. Yield strength is 35 MPa in O versus 165 MPa in H19.
How much does 3102 cost?
3102 is a standard-cost aluminum ($$), cheaper than about 71% 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)
- ASTM B491 — Aluminum-Alloy Extruded Round Tube for General-Purpose Applications — ASTM International (2019)
- EN 573-3 / EN 755-2 Aluminium and aluminium alloys — chemical composition and mechanical properties of extruded products — CEN (2019)
- 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; 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.