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Stainless Steel AL-6XN vs S34565

Stainless Steel · grade comparison

Stainless Steel AL-6XN and S34565 are both stainless steel grades. S34565 is the stronger of the two: yield strength 470 MPa (68.2 ksi) against 365 MPa (52.9 ksi) for AL-6XN, about 29% more; tensile strength follows at 850 MPa (123 ksi) vs 745 MPa (108 ksi). S34565 is harder — 220 HB against 180 HB for AL-6XN — which matters for wear surfaces and threads. On the shop floor, AL-6XN sits in a lower cost tier (premium, $$$) than S34565 (high, $$$$).

AL-6XNChoose it when cost is the deciding factor.

S34565Choose it when strength drives the design, or when surface hardness matters.

AL-6XN vs S34565: properties

AL-6XNS34565

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

195 GPa28.3 Msi
190 GPa27.6 Msi

Shear Modulus

75 GPa10.9 Msi
73 GPa10.6 Msi

Bulk Modulus

162 GPa23.5 Msi
160 GPa23.2 Msi

Tensile Strength (Ultimate)

745 MPa108 ksi
850 MPa123 ksi

Yield Strength (0.2% offset)

365 MPa52.9 ksi
470 MPa68.2 ksi

Reduction in Area

65%
60%

Shear Strength

450 MPa65.3 ksi
510 MPa74 ksi

Fatigue Strength (Endurance Limit)

340 MPa49.3 ksi
380 MPa55.1 ksi

Fracture Toughness (K_IC)

200 MPa·√m182 ksi·√in
180 MPa·√m164 ksi·√in

Charpy V-Notch Impact (RT)

250 J184 ft·lbf
180 J133 ft·lbf

Hardness, Brinell

180 HB
220 HB

Hardness, Rockwell B

88 HRB
95 HRB

Hardness, Vickers

190 HV
—

Same in both: Poisson's Ratio 0.3 · Elongation at Break 45%

Physical

Density and transition temperatures.

Density

8.06 g/cm³0.29 lb/in³
8 g/cm³0.29 lb/in³

Melting Point (Solidus)

1,320°C2,408 °F
1,350°C2,462 °F

Same in both: Liquidus Temperature 1,400°C2,552 °F

Thermal

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

Specific Heat Capacity

456 J/kg·K0.11 BTU/lb·°F
490 J/kg·K0.12 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

15.3 µm/m·K8.5 µin/in·°F
14.5 µm/m·K8.1 µin/in·°F

Latent Heat of Fusion

280 J/g120 BTU/lb
270 J/g116 BTU/lb

Same in both: Thermal Conductivity 11.5 W/m·K6.6 BTU/hr·ft·°F · Max Service Temperature (continuous) 425°C797 °F · Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

8.9×10⁻⁷ Ω·m35 µΩ·in
9.2×10⁻⁷ Ω·m36.2 µΩ·in

Same in both: Electrical Conductivity 1.9 % IACS

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.08 V
-0.1 V

Same in both: Corrosion Resistance 88 / 100

Manufacturability

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

Machinability

25 / 100
20 / 100

Machinability Rating (AISI 1212 = 100 %)

25%
22%

Weldability

75 / 100
70 / 100

Formability (cold)

60 / 100
55 / 100

Polishability

80 / 100
70 / 100

Same in both: Brazeability / Solderability 50 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

85 MJ/kg36,543 BTU/lb
78 MJ/kg33,534 BTU/lb

Embodied Carbon (primary production)

6 kg CO₂/kg
5.8 kg CO₂/kg

Embodied Water

220 L/kg26.4 gal/lb
120 L/kg14.4 gal/lb

Typical Recycled Content

40%
45%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

92 kN·m/kg
106 kN·m/kg

Specific Stiffness (E / density)

24.2 MN·m/kg
23.8 MN·m/kg

Modulus of Resilience

342 kJ/m³
581 kJ/m³

Thermal Diffusivity

3.1 mm²/s
2.9 mm²/s

Thermal Shock Resistance Index

3
4

Strength versus weight

Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

3005007001,0001,5002,0007.27.47.67.888.2Density (g/cm³)Yield strength (MPa) — log scaleS34565AL-6XN

Manufacturing and finishing

CapabilityAL-6XNS34565
CNC machiningYes—
Sheet metalYes—
Default conditionSolution Annealed—
Relative cost$$$ Premium$$$$ High
Min. machined wall0.8 mm—
Best machined surfaceRa 1.6 µm—
AlCrNYes—
AlTiNYes—
Black OxideYes—
CVD Al2O3Yes—
CVD TiCNYes—
CVD TiNYes—
CerakoteYes—
Chrome PlatingYes—
CrNYes—
DLCYes—
ElectropolishingYes—
HVOF CoatingYes—
MoS2Yes—
Multilayer CVDYes—
Nickel PlatingYes—
PTFE CoatingYes—
PaintingYes—
Passivation (Stainless Steel)Yes—

They share 7 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Pickling, Plasma Spray, Silver Plating.

AL-6XN vs S34565 — frequently asked

Is S34565 stronger than AL-6XN?

Yes. S34565 has a typical yield strength of 470 MPa (68.2 ksi) against 365 MPa (52.9 ksi) for AL-6XN — about 29% more. Tensile strength is 850 MPa (123 ksi) vs 745 MPa (108 ksi).

Which is cheaper, AL-6XN or S34565?

AL-6XN is the lower-cost material: it sits in the premium tier ($$$) while S34565 is high ($$$$). 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, AL-6XN or S34565?

AL-6XN, by a small margin. Both rate poor for machinability — 25/100 against 20/100 for S34565; for welding the order is AL-6XN first (very good, 75/100) then S34565 (very good, 70/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in AL-6XN and S34565 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.