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Stainless Steel 2101 vs S32506

Stainless Steel · grade comparison

Stainless Steel 2101 and S32506 are both stainless steel grades. Both yield at about 530 MPa — strength does not separate them. 2101 is the more ductile: elongation 38% versus 32% for S32506, and S32506 is harder (250 HB vs 230 HB). 2101 conducts electricity better (2.7 % IACS vs 2.2 % IACS).

2101Choose it when the part is bent, formed or impact-loaded.

2101 vs S32506: properties

2101S32506

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Bulk Modulus

166 GPa24.1 Msi
160 GPa23.2 Msi

Tensile Strength (Ultimate)

750 MPa109 ksi
760 MPa110 ksi

Yield Strength (0.2% offset)

530 MPa76.9 ksi
550 MPa79.8 ksi

Elongation at Break

38%
32%

Reduction in Area

55%
60%

Compressive Strength

530 MPa76.9 ksi
560 MPa81.2 ksi

Shear Strength

450 MPa65.3 ksi
460 MPa66.7 ksi

Fatigue Strength (Endurance Limit)

400 MPa58 ksi
420 MPa60.9 ksi

Fracture Toughness (K_IC)

120 MPa·√m109 ksi·√in
130 MPa·√m118 ksi·√in

Charpy V-Notch Impact (RT)

150 J111 ft·lbf
180 J133 ft·lbf

Hardness, Brinell

230 HB
250 HB

Hardness, Rockwell B

98 HRB
—

Hardness, Vickers

250 HV
265 HV

Hardness, Rockwell C

—
24 HRC

Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Poisson's Ratio 0.3

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,420°C2,588 °F
1,385°C2,525 °F

Liquidus Temperature

1,465°C2,669 °F
1,445°C2,633 °F

Same in both: Density 7.8 g/cm³0.28 lb/in³

Thermal

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

Thermal Conductivity

15 W/m·K8.7 BTU/hr·ft·°F
16 W/m·K9.2 BTU/hr·ft·°F

Specific Heat Capacity

500 J/kg·K0.12 BTU/lb·°F
480 J/kg·K0.11 BTU/lb·°F

Same in both: Thermal Expansion (CTE, 20–100 °C) 13 µm/m·K7.2 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 300°C572 °F · Min Service Temperature -50°C-58 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

2.7 % IACS
2.2 % IACS

Electrical Resistivity

6.5×10⁻⁷ Ω·m25.6 µΩ·in
8×10⁻⁷ Ω·m31.5 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.1 V
-0.15 V

Corrosion Resistance

66 / 100
76 / 100

Manufacturability

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

Machinability

35 / 100
30 / 100

Machinability Rating (AISI 1212 = 100 %)

28%
22%

Weldability

70 / 100
65 / 100

Formability (cold)

55 / 100
45 / 100

Brazeability / Solderability

40 / 100
35 / 100

Polishability

75 / 100
70 / 100

Castability

—
40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

48 MJ/kg20,636 BTU/lb
58 MJ/kg24,936 BTU/lb

Embodied Carbon (primary production)

3.5 kg CO₂/kg
5.2 kg CO₂/kg

Embodied Water

90 L/kg10.8 gal/lb
180 L/kg21.6 gal/lb

Typical Recycled Content

65%
55%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

96 kN·m/kg
97 kN·m/kg

Modulus of Resilience

702 kJ/m³
756 kJ/m³

Thermal Diffusivity

3.8 mm²/s
4.3 mm²/s

Thermal Shock Resistance Index

4
5

Same in both: Specific Stiffness (E / density) 25.6 MN·m/kg

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 scaleS325062101

Manufacturing and finishing

Capability2101S32506
CNC machiningYes—
Sheet metalYes—
Default conditionSolution Annealed—
Relative cost$$$ Premium$$$ Premium
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.

2101 vs S32506 — frequently asked

What is the difference between 2101 and S32506?

Stainless Steel 2101 and S32506 are both stainless steel grades. Both yield at about 530 MPa — strength does not separate them. 2101 is the more ductile: elongation 38% versus 32% for S32506, and S32506 is harder (250 HB vs 230 HB).

Which is cheaper, 2101 or S32506?

Both sit in the same relative cost tier ($$$, premium); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, 2101 or S32506?

2101. Its machinability rates fair (35/100) against poor (30/100) for S32506; for welding the order is 2101 first (very good, 70/100) then S32506 (good, 65/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 2101 and S32506 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.