FabDigit

B50A470 vs M4 and 2 more: properties

B50A470M435W250M19

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

200 GPa29 Msi
217 GPa31.5 Msi
195 GPa28.3 Msi
200 GPa29 Msi

Shear Modulus

78 GPa11.3 Msi
84 GPa12.2 Msi
76 GPa11 Msi
78 GPa11.3 Msi

Bulk Modulus

160 GPa23.2 Msi
165 GPa23.9 Msi
160 GPa23.2 Msi
160 GPa23.2 Msi

Poisson's Ratio

0.29
0.28
0.3
0.29

Tensile Strength (Ultimate)

450 MPa65.3 ksi
880 MPa128 ksi
480 MPa69.6 ksi
460 MPa66.7 ksi

Yield Strength (0.2% offset)

305 MPa44.2 ksi
550 MPa79.8 ksi
360 MPa52.2 ksi
340 MPa49.3 ksi

Elongation at Break

30%
12%
12%
25%

Reduction in Area

62%
25%
45%

Shear Strength

320 MPa46.4 ksi
600 MPa87 ksi
330 MPa47.9 ksi
320 MPa46.4 ksi

Fatigue Strength (Endurance Limit)

200 MPa29 ksi
210 MPa30.5 ksi
230 MPa33.4 ksi

Charpy V-Notch Impact (RT)

40 J29.5 ft·lbf
5 J3.7 ft·lbf

Hardness, Brinell

157 HB
250 HB
180 HB

Hardness, Rockwell B

82 HRB
82 HRB
72 HRB

Hardness, Vickers

165 HV
265 HV
190 HV
150 HV

Compressive Strength

1,600 MPa232 ksi
360 MPa52.2 ksi

Fracture Toughness (K_IC)

22 MPa·√m20 ksi·√in

Hardness, Rockwell C

24 HRC

Physical

Density and transition temperatures.

Density

7.7 g/cm³0.28 lb/in³
7.97 g/cm³0.29 lb/in³
7.65 g/cm³0.28 lb/in³
7.65 g/cm³0.28 lb/in³

Melting Point (Solidus)

1,500°C2,732 °F
1,250°C2,282 °F
1,490°C2,714 °F
1,480°C2,696 °F

Liquidus Temperature

1,520°C2,768 °F
1,420°C2,588 °F
1,510°C2,750 °F
1,520°C2,768 °F

Thermal

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

Thermal Conductivity

28 W/m·K16.2 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

480 J/kg·K0.11 BTU/lb·°F
420 J/kg·K0.1 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)

12 µm/m·K6.7 µin/in·°F
11 µm/m·K6.1 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)

200°C392 °F
400°C752 °F
180°C356 °F
200°C392 °F

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

Electrical

Conductivity and insulation.

Electrical Conductivity

4.3 % IACS
2.9 % IACS
3.1 % IACS
3.3 % IACS

Electrical Resistivity

4×10⁻⁷ Ω·m15.7 µΩ·in
6×10⁻⁷ Ω·m23.6 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
-0.58 V
-0.6 V

Corrosion Resistance

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

Manufacturability

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

Machinability

55 / 100
25 / 100
45 / 100
45 / 100

Machinability Rating (AISI 1212 = 100 %)

55%
25%
45%
45%

Weldability

50 / 100
15 / 100
35 / 100
50 / 100

Formability (cold)

72 / 100
12 / 100
45 / 100
65 / 100

Brazeability / Solderability

40 / 100
45 / 100
30 / 100
50 / 100

Polishability

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

Castability

20 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

32 MJ/kg13,758 BTU/lb
58 MJ/kg24,936 BTU/lb
32 MJ/kg13,758 BTU/lb
32 MJ/kg13,758 BTU/lb

Embodied Carbon (primary production)

2.4 kg CO₂/kg
4.2 kg CO₂/kg
2.4 kg CO₂/kg
2.4 kg CO₂/kg

Embodied Water

45 L/kg5.4 gal/lb
110 L/kg13.2 gal/lb
45 L/kg5.4 gal/lb
55 L/kg6.6 gal/lb

Typical Recycled Content

20%
35%
15%
25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

58 kN·m/kg
110 kN·m/kg
63 kN·m/kg
60 kN·m/kg

Specific Stiffness (E / density)

26 MN·m/kg
27.2 MN·m/kg
25.5 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

233 kJ/m³
697 kJ/m³
332 kJ/m³
289 kJ/m³

Thermal Diffusivity

7.6 mm²/s
6.6 mm²/s
6.7 mm²/s
6.8 mm²/s

Thermal Shock Resistance Index

5
8
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 scaleM435W250M19B50A470

Manufacturing and finishing

CapabilityB50A470M435W250M19
Sheet metalYesYesYes
CNC machiningYes
Default conditionFinal AnnealedAnnealedFinal AnnealedAnnealed
Relative cost$$ Standard$$$$$ Specialty$$ Standard$$ Standard
Min. machined wall0.8 mm
Best machined surfaceRa 1.6 µm
AlCrNYes
AlTiNYes
CVD Al2O3Yes
CVD TiCNYes
CVD TiNYes
CrNYes
DLCYes
HVOF CoatingYes
MoS2Yes
Multilayer CVDYes
TiAlNYes
TiB2Yes
TiCNYes
TiNYes
WC/CYes
ZrNYes

They share 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 B50A470 and M4 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.