FabDigit

CPM S30V vs A11 and 2 more: properties

CPM S30VA11CPM 10VCPM M4

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

221 GPa32.1 Msi
221 GPa32.1 Msi
228 GPa33.1 Msi
221 GPa32.1 Msi

Shear Modulus

85 GPa12.3 Msi
85 GPa12.3 Msi
88 GPa12.8 Msi
84 GPa12.2 Msi

Poisson's Ratio

0.28
0.29
0.3
0.28

Tensile Strength (Ultimate)

950 MPa138 ksi
900 MPa131 ksi
830 MPa120 ksi
850 MPa123 ksi

Yield Strength (0.2% offset)

700 MPa102 ksi
600 MPa87 ksi
560 MPa81.2 ksi
550 MPa79.8 ksi

Elongation at Break

8%
8%
12%
12%

Compressive Strength

1,900 MPa276 ksi
950 MPa138 ksi
1,900 MPa276 ksi
900 MPa131 ksi

Fracture Toughness (K_IC)

24 MPa·√m21.8 ksi·√in
32 MPa·√m29.1 ksi·√in
40 MPa·√m36.4 ksi·√in
45 MPa·√m41 ksi·√in

Charpy V-Notch Impact (RT)

20 J14.8 ft·lbf
12 J8.9 ft·lbf
18 J13.3 ft·lbf
22 J16.2 ft·lbf

Hardness, Brinell

240 HB
269 HB
255 HB
241 HB

Hardness, Rockwell C

23 HRC
26 HRC
24 HRC
23 HRC

Hardness, Vickers

250 HV
283 HV
270 HV
253 HV

Reduction in Area

20%
22%
22%

Shear Strength

550 MPa79.8 ksi
500 MPa72.5 ksi
520 MPa75.4 ksi

Fatigue Strength (Endurance Limit)

390 MPa56.6 ksi
370 MPa53.7 ksi
380 MPa55.1 ksi

Hardness, Rockwell B

103 HRB
101 HRB
99 HRB

Bulk Modulus

170 GPa24.7 Msi
168 GPa24.4 Msi

Physical

Density and transition temperatures.

Density

7.44 g/cm³0.27 lb/in³
7.41 g/cm³0.27 lb/in³
7.41 g/cm³0.27 lb/in³
7.97 g/cm³0.29 lb/in³

Melting Point (Solidus)

1,400°C2,552 °F
1,280°C2,336 °F
1,250°C2,282 °F

Liquidus Temperature

1,450°C2,642 °F
1,400°C2,552 °F

Thermal

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

Thermal Conductivity

20 W/m·K11.6 BTU/hr·ft·°F
21 W/m·K12.1 BTU/hr·ft·°F
22 W/m·K12.7 BTU/hr·ft·°F
24 W/m·K13.9 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

10.4 µm/m·K5.8 µin/in·°F
10.6 µm/m·K5.9 µin/in·°F
10.6 µm/m·K5.9 µin/in·°F
11.2 µm/m·K6.2 µin/in·°F

Max Service Temperature (continuous)

400°C752 °F
425°C797 °F
480°C896 °F
540°C1,004 °F

Min Service Temperature

-70°C-94 °F
-50°C-58 °F
-70°C-94 °F
-50°C-58 °F

Latent Heat of Fusion

250 J/g107 BTU/lb

Same in both: Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F

Electrical

Conductivity and insulation.

Electrical Resistivity

6.5×10⁻⁷ Ω·m25.6 µΩ·in
6.5×10⁻⁷ Ω·m25.6 µΩ·in
6.5×10⁻⁷ Ω·m25.6 µΩ·in
5.6×10⁻⁷ Ω·m22 µΩ·in

Electrical Conductivity

2.7 % IACS
2.7 % IACS
3.1 % IACS

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

45 / 100
20 / 100
22 / 100
18 / 100

Galvanic Potential (seawater, vs SCE)

-0.5 V

Manufacturability

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

Machinability

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

Machinability Rating (AISI 1212 = 100 %)

20%
25%
20%
30%

Weldability

10 / 100
15 / 100
15 / 100
20 / 100

Formability (cold)

12 / 100
12 / 100
12 / 100
14 / 100

Polishability

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

Brazeability / Solderability

35 / 100
45 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

70 MJ/kg30,095 BTU/lb
55 MJ/kg23,646 BTU/lb
75 MJ/kg32,244 BTU/lb
75 MJ/kg32,244 BTU/lb

Embodied Carbon (primary production)

5.5 kg CO₂/kg
4.5 kg CO₂/kg
5.5 kg CO₂/kg
5.2 kg CO₂/kg

Embodied Water

100 L/kg12 gal/lb
110 L/kg13.2 gal/lb

Typical Recycled Content

25%
25%
40%
20%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

128 kN·m/kg
121 kN·m/kg
112 kN·m/kg
107 kN·m/kg

Specific Stiffness (E / density)

29.7 MN·m/kg
29.8 MN·m/kg
30.8 MN·m/kg
27.7 MN·m/kg

Modulus of Resilience

1,109 kJ/m³
814 kJ/m³
688 kJ/m³
684 kJ/m³

Thermal Diffusivity

5.8 mm²/s
6.2 mm²/s
6.5 mm²/s
6.5 mm²/s

Same in both: Thermal Shock Resistance Index 8

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 scaleA11CPM S30VCPM 10VCPM M4

Manufacturing and finishing

CapabilityCPM S30VA11CPM 10VCPM M4
CNC machiningYesYesYes
Default conditionAnnealedAnnealedAnnealed
Relative cost$$$ Premium$$$$$ Specialty$$$ Premium$$$$ High
Min. machined wall0.8 mm0.8 mm0.8 mm
Best machined surfaceRa 1.6 µmRa 1.6 µmRa 1.6 µm
AlCrNYesYesYes
AlTiNYesYesYes
Black OxideYesYesYes
CVD Al2O3YesYesYes
CVD TiCNYesYesYes
CVD TiNYesYesYes
CerakoteYesYesYes
Chrome PlatingYesYesYes
CrNYesYesYes
DLCYesYesYes
E-CoatingYesYesYes
HVOF CoatingYesYesYes
Hot-Dip GalvanizingYesYesYes
MoS2YesYesYes
Multilayer CVDYesYesYes
Nickel PlatingYesYesYes
PTFE CoatingYesYesYes
PaintingYesYesYes

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 CPM S30V and A11 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.