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Steel 1030 vs C35E

Steel · grade comparison

Steel 1030 and C35E are both steel grades. C35E is the stronger of the two: yield strength 430 MPa (62.4 ksi) against 260 MPa (37.7 ksi) for 1030, about 65% more; tensile strength follows at 660 MPa (95.7 ksi) vs 470 MPa (68.2 ksi). C35E is harder — 200 HB against 137 HB for 1030 — which matters for wear surfaces and threads. On the shop floor, 1030 welds better (good vs fair) and 1030 forms better (50 vs 40 out of 100).

1030Choose it when it will be welded.

C35EChoose it when strength drives the design, or when surface hardness matters.

1030 vs C35E: properties

1030C35E

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

205 GPa29.7 Msi
210 GPa30.5 Msi

Tensile Strength (Ultimate)

470 MPa68.2 ksi
660 MPa95.7 ksi

Yield Strength (0.2% offset)

260 MPa37.7 ksi
430 MPa62.4 ksi

Reduction in Area

42%
50%

Compressive Strength

260 MPa37.7 ksi
440 MPa63.8 ksi

Shear Strength

300 MPa43.5 ksi
400 MPa58 ksi

Fatigue Strength (Endurance Limit)

230 MPa33.4 ksi
300 MPa43.5 ksi

Fracture Toughness (K_IC)

55 MPa·√m50.1 ksi·√in
60 MPa·√m54.6 ksi·√in

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
50 J36.9 ft·lbf

Hardness, Brinell

137 HB
200 HB

Hardness, Rockwell B

75 HRB
93 HRB

Hardness, Rockwell C

—
15 HRC

Hardness, Vickers

—
210 HV

Same in both: Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Elongation at Break 20%

Physical

Density and transition temperatures.

Liquidus Temperature

1,510°C2,750 °F
1,495°C2,723 °F

Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F

Thermal

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

Thermal Conductivity

51.9 W/m·K30 BTU/hr·ft·°F
47 W/m·K27.2 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

11.7 µm/m·K6.5 µin/in·°F
11.5 µm/m·K6.4 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 -20°C-4 °F

Electrical

Conductivity and insulation.

Same in both: Electrical Conductivity 10 % IACS · Electrical Resistivity 1.7×10⁻⁷ Ω·m6.69 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.61 V
-0.6 V

Same in both: Corrosion Resistance 10 / 100

Manufacturability

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

Weldability

62 / 100
50 / 100

Formability (cold)

50 / 100
40 / 100

Castability

45 / 100
—

Brazeability / Solderability

70 / 100
65 / 100

Same in both: Machinability 55 / 100 · Machinability Rating (AISI 1212 = 100 %) 65% · Polishability 55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

1.9 kg CO₂/kg
2 kg CO₂/kg

Embodied Water

40 L/kg4.8 gal/lb
45 L/kg5.4 gal/lb

Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Typical Recycled Content 30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

60 kN·m/kg
84 kN·m/kg

Specific Stiffness (E / density)

26.1 MN·m/kg
26.8 MN·m/kg

Modulus of Resilience

165 kJ/m³
440 kJ/m³

Thermal Diffusivity

13.6 mm²/s
12.7 mm²/s

Thermal Shock Resistance Index

10
13

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 scale1030C35E

Manufacturing and finishing

Capability1030C35E
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.

1030 vs C35E — frequently asked

Is C35E stronger than 1030?

Yes. C35E has a typical yield strength of 430 MPa (62.4 ksi) against 260 MPa (37.7 ksi) for 1030 — about 65% more. Tensile strength is 660 MPa (95.7 ksi) vs 470 MPa (68.2 ksi).

Which is cheaper, 1030 or C35E?

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 welds better, 1030 or C35E?

1030. Its weldability rates good (62/100) against fair (50/100) for C35E.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 1030 and C35E 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.