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Steel A369 FP5 vs A514

Steel · grade comparison

Steel A369 FP5 and A514 are both steel grades. A514 is the stronger of the two: yield strength 760 MPa (110 ksi) against 305 MPa (44.2 ksi) for A369 FP5, about 149% more; tensile strength follows at 800 MPa (116 ksi) vs 500 MPa (72.5 ksi). In exchange, A369 FP5 is the more ductile: elongation 30% versus 19% for A514, and A514 is harder (250 HB vs 150 HB). A369 FP5 runs hotter in service (620°C vs 400°C continuous) and A514 conducts heat better (42 W/m·K vs 36 W/m·K). On the shop floor, A369 FP5 machines more easily (52 vs 38 out of 100) and A514 welds better (good vs fair).

A369 FP5Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

A514Choose it when strength drives the design, or when it will be welded.

A369 FP5 vs A514: properties

A369 FP5A514

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

213 GPa30.9 Msi
205 GPa29.7 Msi

Shear Modulus

82 GPa11.9 Msi
80 GPa11.6 Msi

Tensile Strength (Ultimate)

500 MPa72.5 ksi
800 MPa116 ksi

Yield Strength (0.2% offset)

305 MPa44.2 ksi
760 MPa110 ksi

Elongation at Break

30%
19%

Reduction in Area

62%
50%

Compressive Strength

310 MPa45 ksi
760 MPa110 ksi

Shear Strength

330 MPa47.9 ksi
480 MPa69.6 ksi

Fatigue Strength (Endurance Limit)

235 MPa34.1 ksi
380 MPa55.1 ksi

Fracture Toughness (K_IC)

110 MPa·√m100 ksi·√in
120 MPa·√m109 ksi·√in

Charpy V-Notch Impact (RT)

65 J47.9 ft·lbf
75 J55.3 ft·lbf

Hardness, Brinell

150 HB
250 HB

Hardness, Rockwell B

80 HRB
100 HRB

Hardness, Vickers

163 HV
262 HV

Hardness, Rockwell C

—
24 HRC

Same in both: Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

1,450°C2,642 °F
1,425°C2,597 °F

Same in both: Liquidus Temperature 1,510°C2,750 °F

Thermal

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

Thermal Conductivity

36 W/m·K20.8 BTU/hr·ft·°F
42 W/m·K24.3 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

12.2 µm/m·K6.8 µin/in·°F
12 µm/m·K6.7 µin/in·°F

Latent Heat of Fusion

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

Max Service Temperature (continuous)

620°C1,148 °F
400°C752 °F

Min Service Temperature

-29°C-20 °F
-45°C-49 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

2.9 % IACS
7 % IACS

Electrical Resistivity

6×10⁻⁷ Ω·m23.6 µΩ·in
2.4×10⁻⁷ Ω·m9.45 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.58 V
-0.6 V

Corrosion Resistance

30 / 100
16 / 100

Manufacturability

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

Machinability

52 / 100
38 / 100

Machinability Rating (AISI 1212 = 100 %)

58%
40%

Weldability

45 / 100
55 / 100

Formability (cold)

50 / 100
30 / 100

Brazeability / Solderability

45 / 100
40 / 100

Polishability

55 / 100
50 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

32 MJ/kg13,758 BTU/lb
31 MJ/kg13,328 BTU/lb

Embodied Carbon (primary production)

2.3 kg CO₂/kg
2.4 kg CO₂/kg

Embodied Water

55 L/kg6.6 gal/lb
45 L/kg5.4 gal/lb

Typical Recycled Content

25%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

64 kN·m/kg
102 kN·m/kg

Specific Stiffness (E / density)

27.4 MN·m/kg
26.1 MN·m/kg

Modulus of Resilience

218 kJ/m³
1,409 kJ/m³

Thermal Diffusivity

10.1 mm²/s
11.4 mm²/s

Thermal Shock Resistance Index

7
14

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 scaleA514A369 FP5

Manufacturing and finishing

CapabilityA369 FP5A514
CNC machining—Yes
Sheet metal—Yes
Default condition—Q&T
Relative cost$$ Standard$$ Standard
Min. machined wall—0.8 mm
Best machined surface—Ra 1.6 µm
AlCrN—Yes
AlTiN—Yes
Black Oxide—Yes
CVD Al2O3—Yes
CVD TiCN—Yes
CVD TiN—Yes
Cerakote—Yes
Chrome Plating—Yes
CrN—Yes
DLC—Yes
E-Coating—Yes
HVOF Coating—Yes
Hot-Dip Galvanizing—Yes
MoS2—Yes
Multilayer CVD—Yes
Nickel Plating—Yes
PTFE Coating—Yes
Painting—Yes

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

A369 FP5 vs A514 — frequently asked

Is A514 stronger than A369 FP5?

Yes. A514 has a typical yield strength of 760 MPa (110 ksi) against 305 MPa (44.2 ksi) for A369 FP5 — about 149% more. Tensile strength is 800 MPa (116 ksi) vs 500 MPa (72.5 ksi).

Which is cheaper, A369 FP5 or A514?

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

Which is easier to machine, A369 FP5 or A514?

A369 FP5, by a small margin. Both rate fair for machinability — 52/100 against 38/100 for A514; for welding the order is A514 first (good, 55/100) then A369 FP5 (fair, 45/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in A369 FP5 and A514 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.