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Steel 1010 vs S15C

Steel · grade comparison

Steel 1010 and S15C are both steel grades. S15C is the stronger of the two: yield strength 260 MPa (37.7 ksi) against 180 MPa (26.1 ksi) for 1010, about 44% more; tensile strength follows at 420 MPa (60.9 ksi) vs 325 MPa (47.1 ksi). S15C is harder — 121 HB against 95 HB for 1010 — which matters for wear surfaces and threads. On the shop floor, S15C machines more easily (good vs fair).

S15CChoose it when strength drives the design, or when surface hardness matters.

1010 vs S15C: properties

1010S15C

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

200 GPa29 Msi
205 GPa29.7 Msi

Tensile Strength (Ultimate)

325 MPa47.1 ksi
420 MPa60.9 ksi

Yield Strength (0.2% offset)

180 MPa26.1 ksi
260 MPa37.7 ksi

Elongation at Break

28%
30%

Reduction in Area

50%
55%

Shear Strength

220 MPa31.9 ksi
275 MPa39.9 ksi

Fatigue Strength (Endurance Limit)

160 MPa23.2 ksi
185 MPa26.8 ksi

Fracture Toughness (K_IC)

140 MPa·√m127 ksi·√in
120 MPa·√m109 ksi·√in

Charpy V-Notch Impact (RT)

95 J70.1 ft·lbf
90 J66.4 ft·lbf

Hardness, Brinell

95 HB
121 HB

Hardness, Rockwell B

55 HRB
70 HRB

Hardness, Vickers

100 HV
127 HV

Same in both: Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29

Physical

Density and transition temperatures.

Density

7.87 g/cm³0.28 lb/in³
7.86 g/cm³0.28 lb/in³

Melting Point (Solidus)

1,495°C2,723 °F
1,490°C2,714 °F

Same in both: Liquidus Temperature 1,525°C2,777 °F

Thermal

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

Thermal Conductivity

49.8 W/m·K28.8 BTU/hr·ft·°F
51 W/m·K29.5 BTU/hr·ft·°F

Specific Heat Capacity

448 J/kg·K0.11 BTU/lb·°F
486 J/kg·K0.12 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

12.2 µm/m·K6.8 µin/in·°F
11.9 µm/m·K6.6 µin/in·°F

Latent Heat of Fusion

247 J/g106 BTU/lb
250 J/g107 BTU/lb

Same in both: Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -30°C-22 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

12 % IACS
11 % IACS

Electrical Resistivity

1.43×10⁻⁷ Ω·m5.63 µΩ·in
1.6×10⁻⁷ Ω·m6.3 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Same in both: Galvanic Potential (seawater, vs SCE) -0.61 V · Corrosion Resistance 10 / 100

Manufacturability

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

Machinability

42 / 100
55 / 100

Machinability Rating (AISI 1212 = 100 %)

55%
60%

Polishability

40 / 100
55 / 100

Castability

—
40 / 100

Same in both: Weldability 95 / 100 · Formability (cold) 90 / 100 · Brazeability / Solderability 80 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

24 MJ/kg10,318 BTU/lb
25 MJ/kg10,748 BTU/lb

Embodied Water

35 L/kg4.2 gal/lb
45 L/kg5.4 gal/lb

Typical Recycled Content

30%
25%

Same in both: Embodied Carbon (primary production) 1.9 kg CO₂/kg

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

41 kN·m/kg
53 kN·m/kg

Specific Stiffness (E / density)

25.4 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

81 kJ/m³
165 kJ/m³

Thermal Diffusivity

14.1 mm²/s
13.4 mm²/s

Thermal Shock Resistance Index

7
9

Strength versus weight

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

2005001,0002,0007.588.5Density (g/cm³)Yield strength (MPa) — log scale1010S15C

Manufacturing and finishing

Capability1010S15C
CNC machiningYes—
Sheet metalYes—
Default conditionHR—
Relative cost$ Budget$ Budget
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—
E-CoatingYes—
HVOF CoatingYes—
Hot-Dip GalvanizingYes—
MoS2Yes—
Multilayer CVDYes—
Nickel PlatingYes—
PTFE CoatingYes—
PaintingYes—

They share 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.

1010 vs S15C — frequently asked

Is S15C stronger than 1010?

Yes. S15C has a typical yield strength of 260 MPa (37.7 ksi) against 180 MPa (26.1 ksi) for 1010 — about 44% more. Tensile strength is 420 MPa (60.9 ksi) vs 325 MPa (47.1 ksi).

Which is cheaper, 1010 or S15C?

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

Which is easier to machine, 1010 or S15C?

S15C. Its machinability rates good (55/100) against fair (42/100) for 1010.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 1010 and S15C 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.