Aluminum 1435
AA 1435 · UNS A91435
1435 is a commercially pure 1000-series aluminum (A91435) with impurity control tailored to electrical conductor production, strengthened only by cold work in tempers O through H19 plus H22–H26 and F.
Reference datasheet — 1435 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
1435 tempers and conditions
1435 is supplied in 10 conditions, soft to hard. O is the default FabDigit quotes; the values on this page are for it.
Compare all 10 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ODefault Annealed | Pick for maximum ductility and conductivity: deep-drawn parts, foil stock, flexible conductors and busbar that will be bent. | 30 | 80 | 38 | 20 HB | 61.8 % IACS |
As fabricated | Mill-supplied continuous-cast conductor rod or hot-rolled coil for further drawing; properties not guaranteed. | 40 | 85 | 25 | 22 HB | 61.5 % IACS |
Strain hardened and partially annealed, quarter hard | Stabilised soft-hard strip: like H12 strength but with better ductility and flatness after partial anneal. | 65 | 90 | 16 | 24 HB | 61.5 % IACS |
Strain hardened, quarter hard | Light cold work for slightly stiffer strip/rod that still bends and forms easily. | 75 | 90 | 12 | 25 HB | 61.5 % IACS |
Strain hardened and partially annealed, half hard | Half-hard strip/foil with recovered ductility — common for foil, fin stock and formed conductor parts. | 80 | 100 | 12 | 27 HB | 61 % IACS |
Strain hardened, half hard | The usual compromise temper for conductor strip, busbar and general sheet needing some stiffness with moderate bending. | 90 | 100 | 9 | 28 HB | 61 % IACS |
Strain hardened and partially annealed, three-quarter hard | Use where H16 strength is wanted but a little more bend ductility is needed. | 95 | 115 | 8 | 31 HB | 61 % IACS |
Strain hardened, three-quarter hard | Choose when higher strip stiffness/spring-back is needed and only gentle forming is required. | 100 | 115 | 6 | 32 HB | 61 % IACS |
Strain hardened, full hard | Maximum cold-worked strength for hard-drawn wire, hard strip and thin foil where forming is minimal. | 115 | 130 | 5 | 35 HB | 60.5 % IACS |
Strain hardened, extra hard | Heavily drawn wire/rod temper for overhead conductor and stranded cable where tensile strength governs. | 145 | 165 | 2.5 | 40 HB | 61 % IACS |
What is 1435?
1435 is a commercially pure 1000-series aluminum (A91435) with impurity control tailored to electrical conductor production, strengthened only by cold work in tempers O through H19 plus H22–H26 and F. Engineers choose it for conductor rod, wire and strip because it delivers 61.8% IACS and 234 W/m·K with a 98 formability rating and 95 weldability rating. Strength is minimal — 30 MPa yield, 80 MPa tensile, 38% elongation, 20 HB — machinability is poor (score 20) and service is capped near 200 °C, with corrosion resistance rated 63. 1350 is the closest interchangeable conductor grade. 1435 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 646°C (1,195 °F). 1435 has a yield strength of 30 MPa (4.35 ksi) and a tensile strength of 80 MPa (11.6 ksi) — weaker than 97% of aluminum grades. Elongation at break is 38% and the elastic modulus is 69 GPa (10 Msi).
What is 1435 used for?
- Electrical conductor wire
- Conductor rod stock for cable
- Stranded cable conductors
- Drawn strip and foil for conductor use
- Flexible annealed conductor wire
- Roll-formed and drawn conductor components
Advantages
- Conducts heat well — 234 W/m·K (135.2 BTU/hr·ft·°F), better than 99% of aluminum grades
- Readily welded — 95/100, better than 99% of aluminum grades
- Ductile — tolerates forming and impact — 38%, better than 98% of aluminum grades
- High electrical conductivity — 61.8 % IACS, better than 98% of aluminum grades
- Forms and bends easily — 98/100, better than 98% of aluminum grades
Limitations
- Difficult to machine — 20/100, worse than 99% of aluminum grades
- Low strength — 30 MPa (4.35 ksi), worse than 97% of aluminum grades
1435 properties
Typical room-temperature values for 1435-O; bars are the position among aluminum grades.
Physical3
1435 has a density of 2.71 g/cm³ (0.0979 lb/in³), heavier than 51% of aluminum grades. It melts at 646°C (1,195 °F).
Mechanical10
1435 has a yield strength of 30 MPa (4.35 ksi) and a tensile strength of 80 MPa (11.6 ksi) — weaker than 97% of aluminum grades. Elongation at break is 38% and the elastic modulus is 69 GPa (10 Msi).
Thermal6
1435 is rated for continuous service to 200°C (392 °F). It conducts heat at 234 W/m·K (135.2 BTU/hr·ft·°F), better than 99% of aluminum grades. Thermal expansion is 23.6 µm/m·K (13.1 µin/in·°F).
Electrical3
1435 conducts electricity at 61.8 % IACS, better than 98% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is good (63/100), better than 69% of aluminum grades.
Sustainability4
Producing a kilogram of 1435 takes about 205 MJ of energy and emits 12.5 kg of CO₂ — more than 76% of aluminum grades. Typical recycled content is 15%.
Manufacturability7
1435's machinability is poor (20/100, worse than 99% of aluminum grades); weldability excellent (95/100); formability excellent (98/100).
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. 1435 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1435
Is 1435 easy to machine?
Very soft and gummy — use polished high-rake carbide, high speed, generous cutting fluid and avoid re-cutting chips; H18 machines noticeably cleaner than O.
Can 1435 be welded?
Excellent with GTAW/GMAW/resistance welding using 1100 or 1188 filler; the weld and HAZ revert to O-temper strength and joint conductivity stays near base metal.
Can 1435 be formed, bent or molded?
Outstanding cold formability in O/H22 — deep drawing, roll forming, tight bends and foil rolling; in H16/H18 allow generous bend radii or an interstage anneal (330–400 °C).
1435 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 |
|---|---|---|
| Siimpurity limit | ≤ 0.15 | 0.08 |
| Fecontrolled Fe range distinguishes 1435 from 1350 | 0.25 – 0.5 | 0.38 |
| Cu | ≤ 0.05 | 0.01 |
| Mn | ≤ 0.05 | 0.01 |
| Mg | ≤ 0.05 | 0.01 |
| Zn | ≤ 0.1 | 0.02 |
| Tigrain refiner residual | ≤ 0.03 | 0.01 |
| Others (each)0.10 total | ≤ 0.03 | |
| Al99.35 % min per the '35' in the designation | ≥ 99.35 (balance) |
What surface finishes work on 1435?
Takes bright/clear anodize and chemical brightening beautifully; also readily painted after conversion coating, but leave conductor contact faces unanodized (oxide is insulating).
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 1435 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- A91435
How much does 1435 cost?
1435 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.
1435 — frequently asked
What is 1435 used for?
1435 is typically used for electrical conductor wire, conductor rod stock for cable, stranded cable conductors, drawn strip and foil for conductor use, flexible annealed conductor wire and roll-formed and drawn conductor components. In short: conductor-grade pure aluminum; 61.8% IACS conductivity; excellent weldability, no strength.
What is the yield strength of 1435?
1435 has a typical yield strength of 30 MPa (4.35 ksi) and a tensile strength of 80 MPa (11.6 ksi) — weaker than 97% of aluminum grades. Strength varies by condition: see the 10 listed tempers.
Is 1435 easy to machine?
Not especially — machinability is rated poor (20/100, worse than 99% of aluminum grades). Very soft and gummy — use polished high-rake carbide, high speed, generous cutting fluid and avoid re-cutting chips; H18 machines noticeably cleaner than O.
Can 1435 be welded?
Yes — weldability is rated excellent (95/100). Excellent with GTAW/GMAW/resistance welding using 1100 or 1188 filler; the weld and HAZ revert to O-temper strength and joint conductivity stays near base metal.
What surface finishes work on 1435?
Takes bright/clear anodize and chemical brightening beautifully; also readily painted after conversion coating, but leave conductor contact faces unanodized (oxide is insulating).
Can 1435 be formed, bent or molded?
Outstanding cold formability in O/H22 — deep drawing, roll forming, tight bends and foil rolling; in H16/H18 allow generous bend radii or an interstage anneal (330–400 °C).
What is the maximum service temperature of 1435?
1435 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 1435-O and 1435-H19?
O is the default condition — pick for maximum ductility and conductivity: deep-drawn parts, foil stock, flexible conductors and busbar that will be bent. H19: heavily drawn wire/rod temper for overhead conductor and stranded cable where tensile strength governs. Yield strength is 30 MPa in O versus 145 MPa in H19.
How much does 1435 cost?
1435 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)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASTM B233 / B609 — Aluminum 1350 Drawn or Rolled Rod and Round Wire for Electrical Purposes — ASTM (2018)
- Aluminum: Properties and Physical Metallurgy — ASM International (1984)
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.