FabDigit

1215 vs 1117 and 2 more: properties

12151117114112L14

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

415 MPa60.2 ksi
425 MPa61.6 ksi
675 MPa97.9 ksi
395 MPa57.3 ksi

Yield Strength (0.2% offset)

250 MPa36.3 ksi
235 MPa34.1 ksi
360 MPa52.2 ksi
230 MPa33.4 ksi

Elongation at Break

25%
33%
22%
22%

Reduction in Area

45%
58%
38%
45%

Shear Strength

290 MPa42.1 ksi
320 MPa46.4 ksi
405 MPa58.7 ksi
260 MPa37.7 ksi

Fatigue Strength (Endurance Limit)

190 MPa27.6 ksi
200 MPa29 ksi
300 MPa43.5 ksi
195 MPa28.3 ksi

Hardness, Brinell

121 HB
121 HB
192 HB
121 HB

Hardness, Rockwell B

70 HRB
68 HRB
92 HRB
67 HRB

Charpy V-Notch Impact (RT)

50 J36.9 ft·lbf
30 J22.1 ft·lbf

Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29

Physical

Density and transition temperatures.

Density

7.87 g/cm³0.28 lb/in³
7.87 g/cm³0.28 lb/in³
7.85 g/cm³0.28 lb/in³
7.87 g/cm³0.28 lb/in³

Melting Point (Solidus)

1,420°C2,588 °F
1,420°C2,588 °F
1,425°C2,597 °F
1,425°C2,597 °F

Liquidus Temperature

1,510°C2,750 °F
1,500°C2,732 °F
1,490°C2,714 °F
1,500°C2,732 °F

Thermal

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

Thermal Conductivity

51.9 W/m·K30 BTU/hr·ft·°F
51 W/m·K29.5 BTU/hr·ft·°F
49 W/m·K28.3 BTU/hr·ft·°F
51.9 W/m·K30 BTU/hr·ft·°F

Specific Heat Capacity

486 J/kg·K0.12 BTU/lb·°F
470 J/kg·K0.11 BTU/lb·°F
486 J/kg·K0.12 BTU/lb·°F
486 J/kg·K0.12 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
11.7 µm/m·K6.5 µin/in·°F
11.7 µm/m·K6.5 µin/in·°F

Latent Heat of Fusion

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

Max Service Temperature (continuous)

400°C752 °F
400°C752 °F
425°C797 °F
300°C572 °F

Same in both: Min Service Temperature -20°C-4 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

10.8 % IACS
10.8 % IACS
9.5 % IACS
10.8 % IACS

Electrical Resistivity

1.6×10⁻⁷ Ω·m6.3 µΩ·in
1.6×10⁻⁷ Ω·m6.3 µΩ·in
1.8×10⁻⁷ Ω·m7.09 µΩ·in
1.59×10⁻⁷ Ω·m6.26 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

8 / 100
10 / 100
10 / 100
9 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.61 V

Manufacturability

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

Machinability

85 / 100
70 / 100
68 / 100
90 / 100

Machinability Rating (AISI 1212 = 100 %)

120%
91%
70%
140%

Weldability

20 / 100
50 / 100
25 / 100
15 / 100

Formability (cold)

35 / 100
60 / 100
35 / 100
40 / 100

Brazeability / Solderability

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

Polishability

40 / 100
45 / 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
25 MJ/kg10,748 BTU/lb
25 MJ/kg10,748 BTU/lb

Embodied Carbon (primary production)

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

Embodied Water

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

Typical Recycled Content

35%
30%
30%
35%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

53 kN·m/kg
54 kN·m/kg
86 kN·m/kg
50 kN·m/kg

Specific Stiffness (E / density)

25.4 MN·m/kg
25.4 MN·m/kg
25.5 MN·m/kg
25.4 MN·m/kg

Modulus of Resilience

156 kJ/m³
138 kJ/m³
324 kJ/m³
132 kJ/m³

Thermal Diffusivity

13.6 mm²/s
13.8 mm²/s
12.8 mm²/s
13.6 mm²/s

Thermal Shock Resistance Index

9
9
14
9

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 scale11171141121512L14

Manufacturing and finishing

Capability12151117114112L14
Default conditionHRHRHRHR
Relative cost$ Budget$ Budget$$ Standard$ Budget
Min. machined wall0.8 mm0.8 mm0.8 mm0.8 mm
Best machined surfaceRa 1.6 µmRa 1.6 µmRa 1.6 µmRa 1.6 µm

Both are offered for CNC machining. Both take the same 38 finishes: AlCrN, AlTiN, Black Oxide, CVD Al2O3, CVD TiCN, CVD TiN, Cerakote, Chrome Plating, Copper Plating, CrN, DLC, E-Coating and 26 more.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 1215 and 1117 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.