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Steel 10# vs 1008

Steel · grade comparison

Steel 10# and 1008 are both steel grades, both low carbon steel. 10# is the stronger of the two: yield strength 230 MPa (33.4 ksi) against 175 MPa (25.4 ksi) for 1008, about 31% more; tensile strength follows at 380 MPa (55.1 ksi) vs 300 MPa (43.5 ksi). 10# is harder — 120 HB against 86 HB for 1008 — which matters for wear surfaces and threads. 1008 conducts heat better (60 W/m·K vs 51 W/m·K).

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

10# vs 1008: properties

10#1008

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

205 GPa29.7 Msi
200 GPa29 Msi

Tensile Strength (Ultimate)

380 MPa55.1 ksi
300 MPa43.5 ksi

Yield Strength (0.2% offset)

230 MPa33.4 ksi
175 MPa25.4 ksi

Elongation at Break

33%
30%

Reduction in Area

60%
55%

Compressive Strength

230 MPa33.4 ksi
—

Shear Strength

230 MPa33.4 ksi
185 MPa26.8 ksi

Fatigue Strength (Endurance Limit)

165 MPa23.9 ksi
150 MPa21.8 ksi

Fracture Toughness (K_IC)

110 MPa·√m100 ksi·√in
—

Charpy V-Notch Impact (RT)

100 J73.8 ft·lbf
90 J66.4 ft·lbf

Hardness, Brinell

120 HB
86 HB

Hardness, Rockwell B

67 HRB
45 HRB

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

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

Liquidus Temperature

1,522°C2,772 °F
1,530°C2,786 °F

Same in both: Melting Point (Solidus) 1,495°C2,723 °F

Thermal

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

Thermal Conductivity

51 W/m·K29.5 BTU/hr·ft·°F
60 W/m·K34.7 BTU/hr·ft·°F

Specific Heat Capacity

475 J/kg·K0.11 BTU/lb·°F
481 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

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

Max Service Temperature (continuous)

400°C752 °F
425°C797 °F

Same in both: Latent Heat of Fusion 247 J/g106 BTU/lb · Min Service Temperature -30°C-22 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

10.8 % IACS
11.5 % IACS

Electrical Resistivity

1.6×10⁻⁷ Ω·m6.3 µΩ·in
1.5×10⁻⁷ Ω·m5.91 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Same in both: Galvanic Potential (seawater, vs SCE) -0.65 V · Corrosion Resistance 10 / 100

Manufacturability

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

Machinability

45 / 100
48 / 100

Machinability Rating (AISI 1212 = 100 %)

55%
45%

Formability (cold)

88 / 100
85 / 100

Same in both: Weldability 95 / 100 · Brazeability / Solderability 80 / 100 · Polishability 50 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

2.1 kg CO₂/kg
1.9 kg CO₂/kg

Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Water 40 L/kg4.8 gal/lb · Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

48 kN·m/kg
38 kN·m/kg

Specific Stiffness (E / density)

26.1 MN·m/kg
25.4 MN·m/kg

Modulus of Resilience

129 kJ/m³
77 kJ/m³

Thermal Diffusivity

13.7 mm²/s
15.9 mm²/s

Thermal Shock Resistance Index

8
7

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 scale100810#

Manufacturing and finishing

Capability10#1008
CNC machiningYes—
Default conditionHRHR
Relative cost$ Budget$ Budget
Min. machined wall0.8 mm—
Best machined surfaceRa 1.6 µm—
AlCrNYes—
AlTiNYes—
CVD Al2O3Yes—
CVD TiCNYes—
CVD TiNYes—
CrNYes—
DLCYes—
HVOF CoatingYes—
MoS2Yes—
Multilayer CVDYes—
TiAlNYes—
TiB2Yes—
TiCNYes—
TiNYes—
WC/CYes—
ZrNYes—

Both are offered for Sheet metal. They share 22 finishes: Black Oxide, Cerakote, Chrome Plating, Copper Plating, E-Coating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Hot-Dip Galvanizing, Manganese Phosphate, Nickel Plating and 10 more.

10# vs 1008 — frequently asked

Is 10# stronger than 1008?

Yes. 10# has a typical yield strength of 230 MPa (33.4 ksi) against 175 MPa (25.4 ksi) for 1008 — about 31% more. Tensile strength is 380 MPa (55.1 ksi) vs 300 MPa (43.5 ksi).

Which is cheaper, 10# or 1008?

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 10# over 1008?

Pick 10# when strength drives the design, or when surface hardness matters.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 10# and 1008 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.