Aluminum 3102-H112
Temper
AA 3102 · UNS A93102 · EN AW-3102, AlMn0.2
H112 = strain hardened from hot working only
Standard temper for extruded 3102 irrigation and heat-exchanger tube; soft, bendable, guaranteed minimum strength.
Values for the H112 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 |
H112This page 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-H112?
3102-H112 is 3102 in the H112 temper — standard temper for extruded 3102 irrigation and heat-exchanger tube; soft, bendable, guaranteed minimum strength. 3102-H112 has a yield strength of 40 MPa (5.8 ksi) and a tensile strength of 90 MPa (13.1 ksi) — weaker than 96% of aluminum grades. Elongation at break is 25% and the elastic modulus is 69 GPa (10 Msi). 3102-H112 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; H112 is available on request or by drawing note.
Advantages
- Forms and bends easily — 93/100, better than 95% of aluminum grades
- Ductile — tolerates forming and impact — 25%, better than 94% of aluminum grades
- Conducts heat well — 213 W/m·K (123.1 BTU/hr·ft·°F), better than 93% of aluminum grades
- High electrical conductivity — 52 % IACS, better than 91% of aluminum grades
- Readily welded — 90/100, better than 90% of aluminum grades
Limitations
- Low strength — 40 MPa (5.8 ksi), worse than 96% of aluminum grades
- Difficult to machine — 28/100, worse than 94% of aluminum grades
3102-H112 properties
Typical room-temperature values for 3102-H112; 12 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-H112 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-H112 has a yield strength of 40 MPa (5.8 ksi) and a tensile strength of 90 MPa (13.1 ksi) — weaker than 96% of aluminum grades. Elongation at break is 25% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
3102-H112 is rated for continuous service to 180°C (356 °F). It conducts heat at 213 W/m·K (123.1 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-H112 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-H112 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-H112's machinability is poor (28/100, worse than 94% of aluminum grades); weldability excellent (90/100); formability excellent (93/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 3102-H112
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-H112 — frequently asked
What is 3102-H112 used for?
3102-H112 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-H112?
3102-H112 has a typical yield strength of 40 MPa (5.8 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-H112 easy to machine?
Not especially — machinability is rated poor (28/100, worse than 94% 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-H112 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-H112?
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-H112 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-H112?
3102-H112 is rated for continuous use to about 180°C (356 °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.