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Steel 1010 vs C15R

Steel · grade comparison

Steel 1010 and C15R are both steel grades. C15R is the stronger of the two: yield strength 250 MPa (36.3 ksi) against 180 MPa (26.1 ksi) for 1010, about 39% more; tensile strength follows at 420 MPa (60.9 ksi) vs 325 MPa (47.1 ksi). C15R is harder — 125 HB against 95 HB for 1010 — which matters for wear surfaces and threads. 1010 conducts electricity better (12 % IACS vs 10.5 % IACS). On the shop floor, C15R machines more easily (52 vs 42 out of 100).

C15RChoose it when strength drives the design, or when surface hardness matters.

1010 vs C15R: properties

1010C15R

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
250 MPa36.3 ksi

Elongation at Break

28%
30%

Reduction in Area

50%
60%

Shear Strength

220 MPa31.9 ksi
270 MPa39.2 ksi

Fatigue Strength (Endurance Limit)

160 MPa23.2 ksi
190 MPa27.6 ksi

Fracture Toughness (K_IC)

140 MPa·√m127 ksi·√in
110 MPa·√m100 ksi·√in

Charpy V-Notch Impact (RT)

95 J70.1 ft·lbf
90 J66.4 ft·lbf

Hardness, Brinell

95 HB
125 HB

Hardness, Rockwell B

55 HRB
70 HRB

Hardness, Vickers

100 HV
130 HV

Compressive Strength

—
250 MPa36.3 ksi

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
7.85 g/cm³0.28 lb/in³

Melting Point (Solidus)

1,495°C2,723 °F
1,460°C2,660 °F

Liquidus Temperature

1,525°C2,777 °F
1,520°C2,768 °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
50 W/m·K28.9 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

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

Latent Heat of Fusion

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

Min Service Temperature

-30°C-22 °F
-20°C-4 °F

Same in both: Max Service Temperature (continuous) 400°C752 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

12 % IACS
10.5 % 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).

Galvanic Potential (seawater, vs SCE)

-0.61 V
-0.65 V

Same in both: Corrosion Resistance 10 / 100

Manufacturability

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

Machinability

42 / 100
52 / 100

Machinability Rating (AISI 1212 = 100 %)

55%
58%

Weldability

95 / 100
92 / 100

Polishability

40 / 100
45 / 100

Same in both: 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 Carbon (primary production)

1.9 kg CO₂/kg
2.1 kg CO₂/kg

Embodied Water

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

Typical Recycled Content

30%
25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

41 kN·m/kg
54 kN·m/kg

Specific Stiffness (E / density)

25.4 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

81 kJ/m³
152 kJ/m³

Thermal Diffusivity

14.1 mm²/s
13.6 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 scale1010C15R

Manufacturing and finishing

Capability1010C15R
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 C15R — frequently asked

Is C15R stronger than 1010?

Yes. C15R has a typical yield strength of 250 MPa (36.3 ksi) against 180 MPa (26.1 ksi) for 1010 — about 39% more. Tensile strength is 420 MPa (60.9 ksi) vs 325 MPa (47.1 ksi).

Which is cheaper, 1010 or C15R?

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 C15R?

C15R, by a small margin. Both rate fair for machinability — 52/100 against 42/100 for 1010.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 1010 and C15R 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.