FabDigit

Steel 10B22 vs 10B21 vs 15B35 vs 15B41

Benchmark · 4 materials

Side-by-side benchmark of 4 steel grades.

10B22 vs 10B21 and 2 more: properties

10B2210B2115B3515B41

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

620 MPa89.9 ksi
430 MPa62.4 ksi
730 MPa106 ksi
1,160 MPa168 ksi

Yield Strength (0.2% offset)

525 MPa76.1 ksi
290 MPa42.1 ksi
620 MPa89.9 ksi
1,030 MPa149 ksi

Elongation at Break

13%
30%
13%
13%

Reduction in Area

48%
55%
40%
45%

Shear Strength

375 MPa54.4 ksi
275 MPa39.9 ksi
440 MPa63.8 ksi
700 MPa102 ksi

Fatigue Strength (Endurance Limit)

280 MPa40.6 ksi
200 MPa29 ksi
330 MPa47.9 ksi
520 MPa75.4 ksi

Fracture Toughness (K_IC)

75 MPa·√m68.3 ksi·√in
90 MPa·√m81.9 ksi·√in
60 MPa·√m54.6 ksi·√in

Charpy V-Notch Impact (RT)

45 J33.2 ft·lbf
65 J47.9 ft·lbf
25 J18.4 ft·lbf
40 J29.5 ft·lbf

Hardness, Brinell

180 HB
126 HB
217 HB
336 HB

Hardness, Rockwell B

89 HRB
71 HRB
96 HRB

Compressive Strength

620 MPa89.9 ksi
1,080 MPa157 ksi

Hardness, Rockwell C

36 HRC

Hardness, Vickers

350 HV

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)

1,450°C2,642 °F
1,465°C2,669 °F
1,425°C2,597 °F
1,420°C2,588 °F

Liquidus Temperature

1,510°C2,750 °F
1,510°C2,750 °F
1,495°C2,723 °F
1,490°C2,714 °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

49 W/m·K28.3 BTU/hr·ft·°F
51.9 W/m·K30 BTU/hr·ft·°F
46 W/m·K26.6 BTU/hr·ft·°F
44 W/m·K25.4 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

11.9 µm/m·K6.6 µin/in·°F
11.7 µm/m·K6.5 µin/in·°F
11.9 µm/m·K6.6 µin/in·°F
11.7 µm/m·K6.5 µin/in·°F

Latent Heat of Fusion

250 J/g107 BTU/lb
247 J/g106 BTU/lb
247 J/g106 BTU/lb
250 J/g107 BTU/lb

Max Service Temperature (continuous)

350°C662 °F
400°C752 °F
350°C662 °F
300°C572 °F

Min Service Temperature

-30°C-22 °F
-30°C-22 °F
-30°C-22 °F
-40°C-40 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

10 % IACS
10.8 % IACS
9.5 % IACS
8.6 % IACS

Electrical Resistivity

1.7×10⁻⁷ Ω·m6.69 µΩ·in
1.6×10⁻⁷ Ω·m6.3 µΩ·in
1.8×10⁻⁷ Ω·m7.09 µΩ·in
2×10⁻⁷ Ω·m7.87 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.6 V
-0.61 V
-0.61 V
-0.6 V

Same in both: Corrosion Resistance 10 / 100

Manufacturability

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

Machinability

55 / 100
62 / 100
55 / 100
40 / 100

Machinability Rating (AISI 1212 = 100 %)

65%
65%
65%
40%

Weldability

72 / 100
85 / 100
40 / 100
25 / 100

Formability (cold)

85 / 100
82 / 100
55 / 100
20 / 100

Brazeability / Solderability

65 / 100
70 / 100
60 / 100
45 / 100

Polishability

50 / 100
45 / 100
55 / 100
60 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

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

Embodied Carbon (primary production)

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

Embodied Water

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

Same in both: Typical Recycled Content 30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

79 kN·m/kg
55 kN·m/kg
93 kN·m/kg
148 kN·m/kg

Modulus of Resilience

672 kJ/m³
205 kJ/m³
938 kJ/m³
2,588 kJ/m³

Thermal Diffusivity

13.3 mm²/s
14.1 mm²/s
12.3 mm²/s
11.9 mm²/s

Thermal Shock Resistance Index

12
9
14
21

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 scale10B2110B2215B3515B41

Manufacturing and finishing

Capability10B2210B2115B3515B41
CNC machiningYes
Sheet metalYes
Default conditionHR
Relative cost$ Budget$ Budget$ Budget$ Budget
Min. machined wall0.8 mm
Best machined surfaceRa 1.6 µm
AlCrNYes
AlTiNYes
Black OxideYes
CVD Al2O3Yes
CVD TiCNYes
CVD TiNYes
CerakoteYes
Chrome PlatingYes
CrNYes
DLCYes
E-CoatingYes
HVOF CoatingYes
Hot-Dip GalvanizingYes
MoS2Yes
Multilayer CVDYes
Nickel PlatingYes
PTFE CoatingYes
PaintingYes

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 10B22 and 10B21 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.