FabDigit

1090 vs 1084 and 2 more: properties

1090108410701060

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

965 MPa140 ksi
965 MPa140 ksi
690 MPa100 ksi
675 MPa97.9 ksi

Yield Strength (0.2% offset)

580 MPa84.1 ksi
585 MPa84.8 ksi
385 MPa55.8 ksi
370 MPa53.7 ksi

Elongation at Break

10%
12%
13%
17%

Reduction in Area

17%
17%
30%
34%

Compressive Strength

590 MPa85.6 ksi

Shear Strength

625 MPa90.6 ksi
580 MPa84.1 ksi
450 MPa65.3 ksi
420 MPa60.9 ksi

Fatigue Strength (Endurance Limit)

430 MPa62.4 ksi
420 MPa60.9 ksi
320 MPa46.4 ksi
305 MPa44.2 ksi

Fracture Toughness (K_IC)

30 MPa·√m27.3 ksi·√in
45 MPa·√m41 ksi·√in
45 MPa·√m41 ksi·√in

Charpy V-Notch Impact (RT)

8 J5.9 ft·lbf
8 J5.9 ft·lbf
12 J8.9 ft·lbf
12 J8.9 ft·lbf

Hardness, Brinell

285 HB
293 HB
201 HB
201 HB

Hardness, Rockwell C

30 HRC
31 HRC

Hardness, Vickers

300 HV
211 HV
210 HV

Hardness, Rockwell B

93 HRB
93 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)

1,370°C2,498 °F
1,425°C2,597 °F
1,425°C2,597 °F
1,400°C2,552 °F

Liquidus Temperature

1,465°C2,669 °F
1,470°C2,678 °F
1,480°C2,696 °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
48 W/m·K27.7 BTU/hr·ft·°F
49 W/m·K28.3 BTU/hr·ft·°F
49 W/m·K28.3 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

11.3 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

Max Service Temperature (continuous)

300°C572 °F
400°C752 °F
300°C572 °F
300°C572 °F

Same in both: Latent Heat of Fusion 250 J/g107 BTU/lb · Min Service Temperature -20°C-4 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

9 % IACS
9.6 % IACS
9 % IACS
9.6 % IACS

Electrical Resistivity

1.8×10⁻⁷ Ω·m7.09 µΩ·in
1.8×10⁻⁷ Ω·m7.09 µΩ·in
1.9×10⁻⁷ Ω·m7.48 µΩ·in
1.8×10⁻⁷ Ω·m7.09 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

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

Corrosion Resistance

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

Manufacturability

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

Machinability

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

Machinability Rating (AISI 1212 = 100 %)

40%
45%
55%
60%

Weldability

15 / 100
20 / 100
20 / 100
25 / 100

Formability (cold)

25 / 100
30 / 100
30 / 100
30 / 100

Brazeability / Solderability

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

Polishability

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

Castability

45 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

26 MJ/kg11,178 BTU/lb
25 MJ/kg10,748 BTU/lb
25 MJ/kg10,748 BTU/lb
25 MJ/kg10,748 BTU/lb

Embodied Carbon (primary production)

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

Embodied Water

50 L/kg6 gal/lb
40 L/kg4.8 gal/lb
45 L/kg5.4 gal/lb
45 L/kg5.4 gal/lb

Typical Recycled Content

28%
30%
25%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

123 kN·m/kg
123 kN·m/kg
88 kN·m/kg
86 kN·m/kg

Modulus of Resilience

820 kJ/m³
835 kJ/m³
362 kJ/m³
334 kJ/m³

Thermal Diffusivity

12.6 mm²/s
13 mm²/s
13.3 mm²/s
13.3 mm²/s

Thermal Shock Resistance Index

20
20
14
14

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 scale1084107010601090

Manufacturing and finishing

Capability1090108410701060
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 1090 and 1084 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.