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Steel 1010 vs 15

Steel · grade comparison

Steel 1010 and 15 are both steel grades. 15 is the stronger of the two: yield strength 245 MPa (35.5 ksi) against 180 MPa (26.1 ksi) for 1010, about 36% more; tensile strength follows at 400 MPa (58 ksi) vs 325 MPa (47.1 ksi). 15 is harder — 111 HB against 95 HB for 1010 — which matters for wear surfaces and threads.

15Choose it when strength drives the design, or when surface hardness matters.

1010 vs 15: properties

101015

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
400 MPa58 ksi

Yield Strength (0.2% offset)

180 MPa26.1 ksi
245 MPa35.5 ksi

Elongation at Break

28%
30%

Reduction in Area

50%
58%

Shear Strength

220 MPa31.9 ksi
260 MPa37.7 ksi

Fatigue Strength (Endurance Limit)

160 MPa23.2 ksi
175 MPa25.4 ksi

Fracture Toughness (K_IC)

140 MPa·√m127 ksi·√in
130 MPa·√m118 ksi·√in

Charpy V-Notch Impact (RT)

95 J70.1 ft·lbf
85 J62.7 ft·lbf

Hardness, Brinell

95 HB
111 HB

Hardness, Rockwell B

55 HRB
63 HRB

Hardness, Vickers

100 HV
120 HV

Compressive Strength

—
245 MPa35.5 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
1,465°C2,669 °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
51 W/m·K29.5 BTU/hr·ft·°F

Specific Heat Capacity

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

Min Service Temperature

-30°C-22 °F
-20°C-4 °F

Same in both: Latent Heat of Fusion 247 J/g106 BTU/lb · Max Service Temperature (continuous) 400°C752 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

12 % IACS
10.8 % 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
45 / 100

Machinability Rating (AISI 1212 = 100 %)

55%
60%

Weldability

95 / 100
96 / 100

Formability (cold)

90 / 100
85 / 100

Polishability

40 / 100
45 / 100

Same in both: 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
51 kN·m/kg

Specific Stiffness (E / density)

25.4 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

81 kJ/m³
146 kJ/m³

Thermal Diffusivity

14.1 mm²/s
13.5 mm²/s

Thermal Shock Resistance Index

7
8

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 scale101015

Manufacturing and finishing

Capability101015
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 15 — frequently asked

Is 15 stronger than 1010?

Yes. 15 has a typical yield strength of 245 MPa (35.5 ksi) against 180 MPa (26.1 ksi) for 1010 — about 36% more. Tensile strength is 400 MPa (58 ksi) vs 325 MPa (47.1 ksi).

Which is cheaper, 1010 or 15?

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.

When should I choose 1010 over 15?

Pick 15 when strength drives the design, or when surface hardness matters.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 1010 and 15 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.