FabDigit

35W270 vs Silicon Steel and 2 more: properties

35W270Silicon Steel35W250M19

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

185 GPa26.8 Msi
200 GPa29 Msi
195 GPa28.3 Msi
200 GPa29 Msi

Shear Modulus

72 GPa10.4 Msi
79 GPa11.5 Msi
76 GPa11 Msi
78 GPa11.3 Msi

Bulk Modulus

155 GPa22.5 Msi
160 GPa23.2 Msi
160 GPa23.2 Msi
160 GPa23.2 Msi

Poisson's Ratio

0.29
0.29
0.3
0.29

Tensile Strength (Ultimate)

470 MPa68.2 ksi
460 MPa66.7 ksi
480 MPa69.6 ksi
460 MPa66.7 ksi

Yield Strength (0.2% offset)

340 MPa49.3 ksi
320 MPa46.4 ksi
360 MPa52.2 ksi
340 MPa49.3 ksi

Elongation at Break

17%
20%
12%
25%

Shear Strength

330 MPa47.9 ksi
320 MPa46.4 ksi
330 MPa47.9 ksi
320 MPa46.4 ksi

Fatigue Strength (Endurance Limit)

210 MPa30.5 ksi
210 MPa30.5 ksi
210 MPa30.5 ksi
230 MPa33.4 ksi

Hardness, Brinell

170 HB
170 HB
180 HB

Hardness, Rockwell B

86 HRB
87 HRB
82 HRB
72 HRB

Hardness, Vickers

180 HV
180 HV
190 HV
150 HV

Compressive Strength

360 MPa52.2 ksi

Charpy V-Notch Impact (RT)

5 J3.7 ft·lbf

Reduction in Area

45%

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,480°C2,696 °F
1,500°C2,732 °F
1,490°C2,714 °F
1,480°C2,696 °F

Liquidus Temperature

1,520°C2,768 °F
1,520°C2,768 °F
1,510°C2,750 °F
1,520°C2,768 °F

Same in both: Density 7.65 g/cm³0.28 lb/in³

Thermal

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

Thermal Conductivity

25 W/m·K14.4 BTU/hr·ft·°F
22 W/m·K12.7 BTU/hr·ft·°F
24 W/m·K13.9 BTU/hr·ft·°F
25 W/m·K14.4 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

11.6 µm/m·K6.4 µin/in·°F
12 µm/m·K6.7 µin/in·°F
11.5 µm/m·K6.4 µin/in·°F
11.5 µm/m·K6.4 µin/in·°F

Latent Heat of Fusion

250 J/g107 BTU/lb
250 J/g107 BTU/lb
260 J/g112 BTU/lb
260 J/g112 BTU/lb

Max Service Temperature (continuous)

180°C356 °F
200°C392 °F
180°C356 °F
200°C392 °F

Same in both: Min Service Temperature -60°C-76 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

3.4 % IACS
3.6 % IACS
3.1 % IACS
3.3 % IACS

Electrical Resistivity

5×10⁻⁷ Ω·m19.7 µΩ·in
4.8×10⁻⁷ Ω·m18.9 µΩ·in
5.5×10⁻⁷ Ω·m21.7 µΩ·in
5.2×10⁻⁷ Ω·m20.5 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.6 V
-0.6 V
-0.6 V

Corrosion Resistance

18 / 100
13 / 100
18 / 100
15 / 100

Manufacturability

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

Machinability

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

Weldability

40 / 100
45 / 100
35 / 100
50 / 100

Formability (cold)

55 / 100
62 / 100
45 / 100
65 / 100

Brazeability / Solderability

35 / 100
50 / 100
30 / 100
50 / 100

Polishability

45 / 100
50 / 100
40 / 100
50 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 45%

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

32 MJ/kg13,758 BTU/lb
34 MJ/kg14,617 BTU/lb
32 MJ/kg13,758 BTU/lb
32 MJ/kg13,758 BTU/lb

Embodied Carbon (primary production)

2.4 kg CO₂/kg
2.3 kg CO₂/kg
2.4 kg CO₂/kg
2.4 kg CO₂/kg

Embodied Water

60 L/kg7.2 gal/lb
60 L/kg7.2 gal/lb
45 L/kg5.4 gal/lb
55 L/kg6.6 gal/lb

Typical Recycled Content

20%
25%
15%
25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

61 kN·m/kg
60 kN·m/kg
63 kN·m/kg
60 kN·m/kg

Specific Stiffness (E / density)

24.2 MN·m/kg
26.1 MN·m/kg
25.5 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

312 kJ/m³
256 kJ/m³
332 kJ/m³
289 kJ/m³

Thermal Diffusivity

7.1 mm²/s
6 mm²/s
6.7 mm²/s
6.8 mm²/s

Thermal Shock Resistance Index

5
4
5
5

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 scaleSilicon Steel35W250M1935W270

Manufacturing and finishing

Capability35W270Silicon Steel35W250M19
Default conditionFinal AnnealedAnnealedFinal AnnealedAnnealed
Relative cost$$ Standard$$$ Premium$$ Standard$$ Standard
Min. machined wall
Best machined surface

Both are offered for Sheet metal. Both take the same 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.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 35W270 and Silicon Steel 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.