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Aluminum 355 vs 360.0

Aluminum · grade comparison

Aluminum 355 and 360.0 are both aluminum grades. 360.0 is the stronger of the two: tensile strength 324 MPa (47 ksi) against 250 MPa (36.3 ksi) for 355, about 30% more. 355 is harder — 85 HB against 75 HB for 360.0 — which matters for wear surfaces and threads. 355 runs hotter in service (175°C vs 150°C continuous) and 355 conducts heat better (151 W/m·K vs 113 W/m·K). On the shop floor, 355 welds better (good vs poor) and 355 sits in a lower cost tier (budget, $) than 360.0 (standard, $$).

355Choose it when surface hardness matters, or when the part sees heat.

360.0Choose it when strength drives the design.

355 vs 360.0: properties

355360.0

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Bulk Modulus

69 GPa10 Msi
70 GPa10.2 Msi

Tensile Strength (Ultimate)

250 MPa36.3 ksi
324 MPa47 ksi

Yield Strength (0.2% offset)

180 MPa26.1 ksi
172 MPa24.9 ksi

Shear Strength

195 MPa28.3 ksi
179 MPa26 ksi

Fatigue Strength (Endurance Limit)

62 MPa9 ksi
145 MPa21 ksi

Fracture Toughness (K_IC)

20 MPa·√m18.2 ksi·√in
18 MPa·√m16.4 ksi·√in

Hardness, Brinell

85 HB
75 HB

Hardness, Vickers

—
80 HV

Same in both: Elastic (Young's) Modulus 71 GPa10.3 Msi · Shear Modulus 26.5 GPa3.8 Msi · Poisson's Ratio 0.33 · Elongation at Break 3%

Physical

Density and transition temperatures.

Density

2.71 g/cm³0.1 lb/in³
2.64 g/cm³0.1 lb/in³

Melting Point (Solidus)

546°C1,015 °F
557°C1,035 °F

Liquidus Temperature

621°C1,150 °F
596°C1,105 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

151 W/m·K87.2 BTU/hr·ft·°F
113 W/m·K65.3 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

22.4 µm/m·K12.4 µin/in·°F
21 µm/m·K11.7 µin/in·°F

Max Service Temperature (continuous)

175°C347 °F
150°C302 °F

Same in both: Specific Heat Capacity 963 J/kg·K0.23 BTU/lb·°F · Latent Heat of Fusion 389 J/g167 BTU/lb · Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

36 % IACS
28 % IACS

Electrical Resistivity

4.8×10⁻⁸ Ω·m1.89 µΩ·in
6.16×10⁻⁸ Ω·m2.43 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.78 V
-0.83 V

Corrosion Resistance

45 / 100
60 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

62 / 100
55 / 100

Weldability

55 / 100
30 / 100

Formability (cold)

5 / 100
10 / 100

Castability

85 / 100
92 / 100

Brazeability / Solderability

25 / 100
20 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 60% · Polishability 45 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

200 MJ/kg85,985 BTU/lb
195 MJ/kg83,835 BTU/lb

Embodied Water

1,100 L/kg132 gal/lb
1,150 L/kg138 gal/lb

Typical Recycled Content

80%
85%

Same in both: Embodied Carbon (primary production) 12 kg CO₂/kg

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

92 kN·m/kg
123 kN·m/kg

Specific Stiffness (E / density)

26.2 MN·m/kg
26.9 MN·m/kg

Modulus of Resilience

228 kJ/m³
208 kJ/m³

Thermal Diffusivity

57.9 mm²/s
44.4 mm²/s

Thermal Shock Resistance Index

24
25

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.

20501002005002.22.42.62.83Density (g/cm³)Yield strength (MPa) — log scale355360.0

Manufacturing and finishing

Capability355360.0
CNC machiningYes—
Default condition——
Relative cost$ Budget$$ Standard
Min. machined wall0.5 mm—
Best machined surfaceRa 0.8 µm—
Anodizing Type IIYes—
CerakoteYes—
Chem Film (Alodine)Yes—
DLCYes—
E-CoatingYes—
ElectropolishingYes—
Hard Anodize Type III w/ PTFEYes—
Hard Anodizing Type IIIYes—
Nickel PlatingYes—
PTFE CoatingYes—
PaintingYes—
Powder CoatingYes—

They share 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.

355 vs 360.0 — frequently asked

Is 360.0 stronger than 355?

Yes. 360.0 has a typical tensile strength of 324 MPa (47 ksi) against 250 MPa (36.3 ksi) for 355 — about 30% more.

Which is cheaper, 355 or 360.0?

355 is the lower-cost material: it sits in the budget tier ($) while 360.0 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 is easier to machine, 355 or 360.0?

355, by a small margin. Both rate good for machinability — 62/100 against 55/100 for 360.0; for welding the order is 355 first (good, 55/100) then 360.0 (poor, 30/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 355 and 360.0 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.