Aluminum 354.0 vs 355
Aluminum · grade comparison
Aluminum 354.0 and 355 are both aluminum grades. 354.0 is the stronger of the two: yield strength 255 MPa (37 ksi) against 180 MPa (26.1 ksi) for 355, about 42% more; tensile strength follows at 330 MPa (47.9 ksi) vs 250 MPa (36.3 ksi). 354.0 is harder — 100 HB against 85 HB for 355 — which matters for wear surfaces and threads. 355 conducts heat better (151 W/m·K vs 126 W/m·K). On the shop floor, 355 welds better (good vs fair) and 355 sits in a lower cost tier (budget, $) than 354.0 (standard, $$).
354.0Choose it when strength drives the design, or when surface hardness matters.
355Choose it when it will be welded, or when cost is the deciding factor.
354.0 vs 355: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Same in both: Poisson's Ratio 0.33 · Elongation at Break 3%
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 2.71 g/cm³0.1 lb/in³
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Same in both: Specific Heat Capacity 963 J/kg·K0.23 BTU/lb·°F · Latent Heat of Fusion 389 J/g167 BTU/lb · Max Service Temperature (continuous) 175°C347 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.78 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Formability (cold)
Castability
Polishability
Same in both: Machinability 62 / 100 · Machinability Rating (AISI 1212 = 100 %) 60% · Brazeability / Solderability 25 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every aluminum grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | 354.0 | 355 |
|---|---|---|
| CNC machining | — | Yes |
| Default condition | — | — |
| Relative cost | $$ Standard | $ Budget |
| Min. machined wall | — | 0.5 mm |
| Best machined surface | — | Ra 0.8 µm |
| Anodizing Type II | — | Yes |
| Cerakote | — | Yes |
| Chem Film (Alodine) | — | Yes |
| DLC | — | Yes |
| E-Coating | — | Yes |
| Electropolishing | — | Yes |
| Hard Anodize Type III w/ PTFE | — | Yes |
| Hard Anodizing Type III | — | Yes |
| Nickel Plating | — | Yes |
| PTFE Coating | — | Yes |
| Painting | — | Yes |
| Powder Coating | — | Yes |
They share 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.
354.0 vs 355 — frequently asked
Is 354.0 stronger than 355?
Yes. 354.0 has a typical yield strength of 255 MPa (37 ksi) against 180 MPa (26.1 ksi) for 355 — about 42% more. Tensile strength is 330 MPa (47.9 ksi) vs 250 MPa (36.3 ksi).
Which is cheaper, 354.0 or 355?
355 is the lower-cost material: it sits in the budget tier ($) while 354.0 is standard ($$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which welds better, 354.0 or 355?
355. Its weldability rates good (55/100) against fair (35/100) for 354.0.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 354.0 and 355 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.