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Steel AF1410 vs Custom 455

Steel · grade comparison

Steel AF1410 and Custom 455 are both steel grades. AF1410 is the stronger of the two: tensile strength 1,660 MPa (241 ksi) against 1,550 MPa (225 ksi) for Custom 455, about 7% more. AF1410 is the more ductile: elongation 16% versus 12% for Custom 455, and AF1410 is harder (485 HV vs 460 HV). AF1410 conducts heat better (24 W/m·K vs 17.6 W/m·K). On the shop floor, AF1410 welds better (good vs fair).

AF1410Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.

AF1410 vs Custom 455: properties

AF1410Custom 455

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

196 GPa28.4 Msi
200 GPa29 Msi

Shear Modulus

76 GPa11 Msi
77 GPa11.2 Msi

Bulk Modulus

160 GPa23.2 Msi
166 GPa24.1 Msi

Tensile Strength (Ultimate)

1,660 MPa241 ksi
1,550 MPa225 ksi

Yield Strength (0.2% offset)

1,520 MPa220 ksi
1,450 MPa210 ksi

Elongation at Break

16%
12%

Reduction in Area

68%
45%

Compressive Strength

1,590 MPa231 ksi
1,500 MPa218 ksi

Shear Strength

990 MPa144 ksi
930 MPa135 ksi

Fatigue Strength (Endurance Limit)

780 MPa113 ksi
720 MPa104 ksi

Fracture Toughness (K_IC)

154 MPa·√m140 ksi·√in
80 MPa·√m72.8 ksi·√in

Charpy V-Notch Impact (RT)

85 J62.7 ft·lbf
27 J19.9 ft·lbf

Hardness, Rockwell C

48 HRC
46 HRC

Hardness, Vickers

485 HV
460 HV

Hardness, Brinell

—
430 HB

Same in both: Poisson's Ratio 0.3

Physical

Density and transition temperatures.

Density

7.89 g/cm³0.29 lb/in³
7.76 g/cm³0.28 lb/in³

Melting Point (Solidus)

1,425°C2,597 °F
1,400°C2,552 °F

Liquidus Temperature

1,490°C2,714 °F
1,450°C2,642 °F

Thermal

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

Thermal Conductivity

24 W/m·K13.9 BTU/hr·ft·°F
17.6 W/m·K10.2 BTU/hr·ft·°F

Specific Heat Capacity

430 J/kg·K0.1 BTU/lb·°F
460 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

11.6 µm/m·K6.4 µin/in·°F
10.2 µm/m·K5.7 µin/in·°F

Latent Heat of Fusion

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

Max Service Temperature (continuous)

400°C752 °F
425°C797 °F

Min Service Temperature

-100°C-148 °F
-73°C-99 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

2.7 % IACS
2.2 % IACS

Electrical Resistivity

6.5×10⁻⁷ Ω·m25.6 µΩ·in
8×10⁻⁷ Ω·m31.5 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.6 V
-0.25 V

Corrosion Resistance

18 / 100
55 / 100

Manufacturability

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

Machinability

22 / 100
25 / 100

Machinability Rating (AISI 1212 = 100 %)

18%
30%

Weldability

60 / 100
45 / 100

Formability (cold)

15 / 100
25 / 100

Polishability

75 / 100
80 / 100

Castability

—
20 / 100

Brazeability / Solderability

—
35 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

78 MJ/kg33,534 BTU/lb
65 MJ/kg27,945 BTU/lb

Embodied Carbon (primary production)

6.5 kg CO₂/kg
5.2 kg CO₂/kg

Embodied Water

130 L/kg15.6 gal/lb
120 L/kg14.4 gal/lb

Typical Recycled Content

15%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

210 kN·m/kg
200 kN·m/kg

Specific Stiffness (E / density)

24.8 MN·m/kg
25.8 MN·m/kg

Modulus of Resilience

5,894 kJ/m³
5,256 kJ/m³

Thermal Diffusivity

7.1 mm²/s
4.9 mm²/s

Thermal Shock Resistance Index

18
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 scaleAF1410Custom 455

Manufacturing and finishing

CapabilityAF1410Custom 455
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.

AF1410 vs Custom 455 — frequently asked

Is AF1410 stronger than Custom 455?

Yes. AF1410 has a typical tensile strength of 1,660 MPa (241 ksi) against 1,550 MPa (225 ksi) for Custom 455 — about 7% more.

Which is cheaper, AF1410 or Custom 455?

Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which welds better, AF1410 or Custom 455?

AF1410. Its weldability rates good (60/100) against fair (45/100) for Custom 455.

Ready to make it?

Upload a CAD file and FabDigit prices the part in AF1410 and Custom 455 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.