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Steel DC03 vs SPCE

Steel · grade comparison

Steel DC03 and SPCE are both steel grades. DC03 is the stronger of the two: yield strength 195 MPa (28.3 ksi) against 155 MPa (22.5 ksi) for SPCE, about 26% more. DC03 is harder — 95 HB against 90 HB for SPCE — which matters for wear surfaces and threads. DC03 runs hotter in service (350°C vs 300°C continuous). On the shop floor, SPCE forms better (98 vs 88 out of 100).

DC03Choose it when strength drives the design, or when surface hardness matters.

DC03 vs SPCE: properties

DC03SPCE

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

210 GPa30.5 Msi
205 GPa29.7 Msi

Tensile Strength (Ultimate)

310 MPa45 ksi
295 MPa42.8 ksi

Yield Strength (0.2% offset)

195 MPa28.3 ksi
155 MPa22.5 ksi

Elongation at Break

38%
42%

Reduction in Area

65%
70%

Shear Strength

230 MPa33.4 ksi
200 MPa29 ksi

Fatigue Strength (Endurance Limit)

145 MPa21 ksi
140 MPa20.3 ksi

Hardness, Brinell

95 HB
90 HB

Hardness, Rockwell B

55 HRB
44 HRB

Hardness, Vickers

100 HV
95 HV

Compressive Strength

—
155 MPa22.5 ksi

Charpy V-Notch Impact (RT)

—
80 J59 ft·lbf

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.

Melting Point (Solidus)

1,490°C2,714 °F
1,500°C2,732 °F

Liquidus Temperature

1,525°C2,777 °F
1,535°C2,795 °F

Same in both: Density 7.85 g/cm³0.28 lb/in³

Thermal

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

Thermal Conductivity

54 W/m·K31.2 BTU/hr·ft·°F
55 W/m·K31.8 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

12 µm/m·K6.7 µin/in·°F
12.2 µm/m·K6.8 µin/in·°F

Max Service Temperature (continuous)

350°C662 °F
300°C572 °F

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

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 11 % IACS · Electrical Resistivity 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
-0.62 V

Same in both: Corrosion Resistance 10 / 100

Manufacturability

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

Machinability

50 / 100
48 / 100

Machinability Rating (AISI 1212 = 100 %)

55%
50%

Formability (cold)

88 / 100
98 / 100

Brazeability / Solderability

70 / 100
80 / 100

Polishability

50 / 100
55 / 100

Same in both: Weldability 95 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

28 MJ/kg12,038 BTU/lb
30 MJ/kg12,898 BTU/lb

Embodied Water

40 L/kg4.8 gal/lb
55 L/kg6.6 gal/lb

Same in both: Embodied Carbon (primary production) 2.3 kg CO₂/kg · Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

39 kN·m/kg
38 kN·m/kg

Specific Stiffness (E / density)

26.8 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

91 kJ/m³
59 kJ/m³

Thermal Shock Resistance Index

7
6

Same in both: Thermal Diffusivity 14.6 mm²/s

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 scaleDC03SPCE

Manufacturing and finishing

CapabilityDC03SPCE
Default condition——
Relative cost$ Budget$ Budget
Min. machined wall——
Best machined surface——

Both take the same 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.

DC03 vs SPCE — frequently asked

Is DC03 stronger than SPCE?

Yes. DC03 has a typical yield strength of 195 MPa (28.3 ksi) against 155 MPa (22.5 ksi) for SPCE — about 26% more. Tensile strength is 310 MPa (45 ksi) vs 295 MPa (42.8 ksi).

Which is cheaper, DC03 or SPCE?

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 DC03 over SPCE?

Pick DC03 when strength drives the design, or when surface hardness matters.

Ready to make it?

Upload a CAD file and FabDigit prices the part in DC03 and SPCE 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.