Aluminum 3102-H24
Temper
AA 3102 · UNS A93102 · EN AW-3102, AlMn0.2
H24 = strain hardened and partially annealed, half hard
Preferred over H14 when the part must still be bent or flared after forming.
Values for the H24 condition
Other 3102 tempers and conditions
3102 is listed in 12 conditions; see the grade overview at 3102.
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 |
H24This page 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-H24?
3102-H24 is 3102 in the H24 temper — preferred over H14 when the part must still be bent or flared after forming. 3102-H24 has a yield strength of 105 MPa (15.2 ksi) and a tensile strength of 130 MPa (18.9 ksi) — weaker than 84% of aluminum grades. Elongation at break is 12% and the elastic modulus is 69 GPa (10 Msi). 3102-H24 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). O is the default condition FabDigit quotes; H24 is available on request or by drawing note.
Advantages
- Conducts heat well — 209 W/m·K (120.8 BTU/hr·ft·°F), better than 93% of aluminum grades
- High electrical conductivity — 52 % IACS, better than 91% of aluminum grades
- Forms and bends easily — 74/100, better than 86% of aluminum grades
- Good corrosion resistance — 72/100, better than 83% of aluminum grades
- Readily welded — 87/100, better than 82% of aluminum grades
Limitations
- Difficult to machine — 35/100, worse than 86% of aluminum grades
- Low strength — 105 MPa (15.2 ksi), worse than 84% of aluminum grades
3102-H24 properties
Typical room-temperature values for 3102-H24; 17 are specific to this condition. Other listed values are 3102 reference data and may not represent this condition. Bars are the position among aluminum grades.
Physical3
3102-H24 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-H24 has a yield strength of 105 MPa (15.2 ksi) and a tensile strength of 130 MPa (18.9 ksi) — weaker than 84% of aluminum grades. Elongation at break is 12% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
3102-H24 is rated for continuous service to 150°C (302 °F). It conducts heat at 209 W/m·K (120.8 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-H24 conducts electricity at 52 % IACS, better than 91% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 83% of aluminum grades.
Sustainability4
Producing a kilogram of 3102-H24 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-H24's machinability is fair (35/100, worse than 86% of aluminum grades); weldability excellent (87/100); formability very good (74/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 3102-H24
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.
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.
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 | — |
3102-H24 — frequently asked
What is 3102-H24 used for?
3102-H24 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-H24?
3102-H24 has a typical yield strength of 105 MPa (15.2 ksi) and a tensile strength of 130 MPa (18.9 ksi) — weaker than 84% of aluminum grades. Strength varies by condition: see the 12 listed tempers.
Is 3102-H24 easy to machine?
Not especially — machinability is rated fair (35/100, worse than 86% 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-H24 be welded?
Yes — weldability is rated excellent (87/100). 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-H24?
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-H24 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-H24?
3102-H24 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 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.
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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.