FabDigit

High Carbon Steel vs 1065 and 2 more: properties

High Carbon Steel106510751084

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

850 MPa123 ksi
670 MPa97.2 ksi
830 MPa120 ksi
965 MPa140 ksi

Yield Strength (0.2% offset)

470 MPa68.2 ksi
380 MPa55.1 ksi
470 MPa68.2 ksi
585 MPa84.8 ksi

Elongation at Break

12%
12%
11%
12%

Reduction in Area

20%
30%
20%
17%

Shear Strength

550 MPa79.8 ksi
430 MPa62.4 ksi
520 MPa75.4 ksi
580 MPa84.1 ksi

Fatigue Strength (Endurance Limit)

380 MPa55.1 ksi
300 MPa43.5 ksi
370 MPa53.7 ksi
420 MPa60.9 ksi

Fracture Toughness (K_IC)

35 MPa·√m31.9 ksi·√in
45 MPa·√m41 ksi·√in

Charpy V-Notch Impact (RT)

12 J8.9 ft·lbf
10 J7.4 ft·lbf
9 J6.6 ft·lbf
8 J5.9 ft·lbf

Hardness, Brinell

250 HB
190 HB
235 HB
293 HB

Hardness, Rockwell C

24 HRC
31 HRC

Hardness, Vickers

262 HV
247 HV

Compressive Strength

380 MPa55.1 ksi

Hardness, Rockwell B

92 HRB
99 HRB

Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · 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)

1,420°C2,588 °F
1,425°C2,597 °F
1,425°C2,597 °F
1,425°C2,597 °F

Liquidus Temperature

1,480°C2,696 °F
1,480°C2,696 °F
1,470°C2,678 °F
1,470°C2,678 °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

47 W/m·K27.2 BTU/hr·ft·°F
49 W/m·K28.3 BTU/hr·ft·°F
48 W/m·K27.7 BTU/hr·ft·°F
48 W/m·K27.7 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

11.4 µm/m·K6.3 µin/in·°F
11.3 µm/m·K6.3 µin/in·°F
11.5 µm/m·K6.4 µin/in·°F
11.3 µm/m·K6.3 µin/in·°F

Latent Heat of Fusion

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

Max Service Temperature (continuous)

400°C752 °F
350°C662 °F
300°C572 °F
400°C752 °F

Min Service Temperature

-20°C-4 °F
-20°C-4 °F
-30°C-22 °F
-20°C-4 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

9.6 % IACS
9.5 % IACS
9.5 % IACS
9.6 % IACS

Same in both: Electrical Resistivity 1.8×10⁻⁷ Ω·m7.09 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.61 V
-0.61 V
-0.65 V
-0.61 V

Corrosion Resistance

9 / 100
10 / 100
8 / 100
8 / 100

Manufacturability

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

Machinability

40 / 100
45 / 100
38 / 100
35 / 100

Machinability Rating (AISI 1212 = 100 %)

45%
57%
40%
45%

Weldability

25 / 100
25 / 100
18 / 100
20 / 100

Formability (cold)

28 / 100
30 / 100
35 / 100
30 / 100

Brazeability / Solderability

55 / 100
55 / 100
45 / 100
60 / 100

Polishability

70 / 100
65 / 100
70 / 100
75 / 100

Castability

45 / 100
40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

2 kg CO₂/kg
1.9 kg CO₂/kg
1.9 kg CO₂/kg
1.9 kg CO₂/kg

Embodied Water

40 L/kg4.8 gal/lb
30 L/kg3.6 gal/lb
40 L/kg4.8 gal/lb
40 L/kg4.8 gal/lb

Typical Recycled Content

25%
30%
28%
30%

Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

108 kN·m/kg
85 kN·m/kg
106 kN·m/kg
123 kN·m/kg

Modulus of Resilience

539 kJ/m³
352 kJ/m³
539 kJ/m³
835 kJ/m³

Thermal Diffusivity

12.5 mm²/s
13.3 mm²/s
12.9 mm²/s
13 mm²/s

Thermal Shock Resistance Index

17
14
17
20

Same in both: Specific Stiffness (E / density) 26.1 MN·m/kg

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 scale106510751084High Carbon Steel

Manufacturing and finishing

CapabilityHigh Carbon Steel106510751084
Default conditionHRHRHRHR
Relative cost$$ Standard$$ Standard$$ Standard$$ Standard
Min. machined wall0.8 mm0.8 mm0.8 mm0.8 mm
Best machined surfaceRa 1.6 µmRa 1.6 µmRa 1.6 µmRa 1.6 µm

Both are offered for CNC machining and Sheet metal. Both take the same 38 finishes: AlCrN, AlTiN, Black Oxide, CVD Al2O3, CVD TiCN, CVD TiN, Cerakote, Chrome Plating, Copper Plating, CrN, DLC, E-Coating and 26 more.

Ready to make it?

Upload a CAD file and FabDigit prices the part in High Carbon Steel and 1065 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.