FabDigit

SPFH780 vs 22MnB5 and 2 more: properties

SPFH78022MnB5MS1700CP1000

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

207 GPa30 Msi
210 GPa30.5 Msi
210 GPa30.5 Msi
210 GPa30.5 Msi

Shear Modulus

80 GPa11.6 Msi
81 GPa11.7 Msi
80 GPa11.6 Msi
80 GPa11.6 Msi

Tensile Strength (Ultimate)

820 MPa119 ksi
560 MPa81.2 ksi
1,780 MPa258 ksi
1,050 MPa152 ksi

Yield Strength (0.2% offset)

520 MPa75.4 ksi
380 MPa55.1 ksi
1,450 MPa210 ksi
800 MPa116 ksi

Elongation at Break

20%
22%
4%
8%

Reduction in Area

55%
55%
30%

Compressive Strength

820 MPa119 ksi
1,450 MPa210 ksi
1,050 MPa152 ksi

Shear Strength

500 MPa72.5 ksi
380 MPa55.1 ksi
1,050 MPa152 ksi
655 MPa95 ksi

Fatigue Strength (Endurance Limit)

350 MPa50.8 ksi
250 MPa36.3 ksi
700 MPa102 ksi
470 MPa68.2 ksi

Charpy V-Notch Impact (RT)

50 J36.9 ft·lbf
60 J44.3 ft·lbf
25 J18.4 ft·lbf

Hardness, Brinell

245 HB
160 HB
315 HB

Hardness, Rockwell B

99 HRB
85 HRB

Hardness, Rockwell C

23 HRC
50 HRC
33 HRC

Hardness, Vickers

255 HV
170 HV
520 HV
330 HV

Fracture Toughness (K_IC)

50 MPa·√m45.5 ksi·√in
50 MPa·√m45.5 ksi·√in

Same in both: Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.3

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,460°C2,660 °F
1,465°C2,669 °F
1,420°C2,588 °F
1,490°C2,714 °F

Liquidus Temperature

1,510°C2,750 °F
1,520°C2,768 °F
1,500°C2,732 °F
1,520°C2,768 °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

45 W/m·K26 BTU/hr·ft·°F
32 W/m·K18.5 BTU/hr·ft·°F
32 W/m·K18.5 BTU/hr·ft·°F
32 W/m·K18.5 BTU/hr·ft·°F

Specific Heat Capacity

470 J/kg·K0.11 BTU/lb·°F
480 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)

12 µm/m·K6.7 µin/in·°F
12.5 µm/m·K6.9 µin/in·°F
12.5 µm/m·K6.9 µin/in·°F
12.5 µm/m·K6.9 µin/in·°F

Latent Heat of Fusion

250 J/g107 BTU/lb
260 J/g112 BTU/lb
270 J/g116 BTU/lb
270 J/g116 BTU/lb

Max Service Temperature (continuous)

200°C392 °F
250°C482 °F
200°C392 °F
200°C392 °F

Same in both: Min Service Temperature -40°C-40 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

8.6 % IACS
8 % IACS
8 % IACS
8 % IACS

Electrical Resistivity

2×10⁻⁷ Ω·m7.87 µΩ·in
2.2×10⁻⁷ Ω·m8.66 µΩ·in
2.2×10⁻⁷ Ω·m8.66 µΩ·in
2.2×10⁻⁷ Ω·m8.66 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V · Corrosion Resistance 12 / 100

Manufacturability

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

Machinability

35 / 100
55 / 100
20 / 100
28 / 100

Machinability Rating (AISI 1212 = 100 %)

45%
60%
20%
25%

Weldability

70 / 100
65 / 100
55 / 100
65 / 100

Formability (cold)

45 / 100
60 / 100
12 / 100
35 / 100

Brazeability / Solderability

55 / 100
50 / 100
30 / 100
40 / 100

Polishability

40 / 100
55 / 100
55 / 100
55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

26 MJ/kg11,178 BTU/lb
25 MJ/kg10,748 BTU/lb
30 MJ/kg12,898 BTU/lb
30 MJ/kg12,898 BTU/lb

Embodied Carbon (primary production)

2.1 kg CO₂/kg
2.1 kg CO₂/kg
2.3 kg CO₂/kg
2.3 kg CO₂/kg

Embodied Water

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

Typical Recycled Content

25%
20%
25%
25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

104 kN·m/kg
71 kN·m/kg
227 kN·m/kg
134 kN·m/kg

Specific Stiffness (E / density)

26.4 MN·m/kg
26.8 MN·m/kg
26.8 MN·m/kg
26.8 MN·m/kg

Modulus of Resilience

653 kJ/m³
344 kJ/m³
5,006 kJ/m³
1,524 kJ/m³

Thermal Diffusivity

12.2 mm²/s
8.5 mm²/s
8.7 mm²/s
8.7 mm²/s

Thermal Shock Resistance Index

15
7
22
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 scale22MnB5MS1700CP1000SPFH780

Manufacturing and finishing

CapabilitySPFH78022MnB5MS1700CP1000
Sheet metalYesYesYes
Default conditionCRCRCR
Relative cost$ Budget$$ Standard$$ Standard$$ Standard
Min. machined wall
Best machined surface
Black OxideYesYesYes
CerakoteYesYesYes
Chrome PlatingYesYesYes
E-CoatingYesYesYes
Hot-Dip GalvanizingYesYesYes
Nickel PlatingYesYesYes
PTFE CoatingYesYesYes
PaintingYesYesYes
Powder CoatingYesYesYes
Tin PlatingYesYesYes
Zinc PlatingYesYesYes
Zinc-Flake (Dip-Spin) CoatingYesYesYes
Zinc-Nickel PlatingYesYesYes

They share 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.

Ready to make it?

Upload a CAD file and FabDigit prices the part in SPFH780 and 22MnB5 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.