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Steel A220 45008 vs A47 32510

Steel · grade comparison

Steel A220 45008 and A47 32510 are both steel grades. A220 45008 is the stronger of the two: yield strength 330 MPa (47.9 ksi) against 240 MPa (34.8 ksi) for A47 32510, about 38% more; tensile strength follows at 470 MPa (68.2 ksi) vs 360 MPa (52.2 ksi). In exchange, A47 32510 is the more ductile: elongation 12% versus 10% for A220 45008, and A220 45008 is harder (175 HB vs 130 HB). A47 32510 conducts electricity better (5.5 % IACS vs 4.7 % IACS). On the shop floor, A47 32510 machines more easily (excellent vs good) and A47 32510 sits in a lower cost tier (budget, $) than A220 45008 (standard, $$).

A220 45008Choose it when strength drives the design.

A47 32510Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.

A220 45008 vs A47 32510: properties

A220 45008A47 32510

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

172 GPa24.9 Msi
170 GPa24.7 Msi

Shear Modulus

68 GPa9.9 Msi
66 GPa9.6 Msi

Tensile Strength (Ultimate)

470 MPa68.2 ksi
360 MPa52.2 ksi

Yield Strength (0.2% offset)

330 MPa47.9 ksi
240 MPa34.8 ksi

Elongation at Break

10%
12%

Reduction in Area

9%
14%

Compressive Strength

1,000 MPa145 ksi
620 MPa89.9 ksi

Shear Strength

380 MPa55.1 ksi
310 MPa45 ksi

Fatigue Strength (Endurance Limit)

200 MPa29 ksi
170 MPa24.7 ksi

Charpy V-Notch Impact (RT)

11 J8.1 ft·lbf
14 J10.3 ft·lbf

Hardness, Brinell

175 HB
130 HB

Hardness, Rockwell B

88 HRB
72 HRB

Hardness, Vickers

184 HV
—

Same in both: Bulk Modulus 120 GPa17.4 Msi · Poisson's Ratio 0.26 · Fracture Toughness (K_IC) 45 MPa·√m41 ksi·√in

Physical

Density and transition temperatures.

Density

7.27 g/cm³0.26 lb/in³
7.3 g/cm³0.26 lb/in³

Melting Point (Solidus)

1,135°C2,075 °F
1,130°C2,066 °F

Same in both: Liquidus Temperature 1,250°C2,282 °F

Thermal

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

Thermal Conductivity

46 W/m·K26.6 BTU/hr·ft·°F
51 W/m·K29.5 BTU/hr·ft·°F

Max Service Temperature (continuous)

400°C752 °F
425°C797 °F

Same in both: Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F · Latent Heat of Fusion 220 J/g94.6 BTU/lb · Min Service Temperature -30°C-22 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

4.7 % IACS
5.5 % IACS

Electrical Resistivity

3.7×10⁻⁷ Ω·m14.6 µΩ·in
3.1×10⁻⁷ Ω·m12.2 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

15 / 100
18 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.6 V

Manufacturability

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

Machinability

58 / 100
85 / 100

Machinability Rating (AISI 1212 = 100 %)

80%
120%

Formability (cold)

15 / 100
10 / 100

Same in both: Weldability 25 / 100 · Castability 78 / 100 · Brazeability / Solderability 50 / 100 · Polishability 50 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

20 MJ/kg8,598 BTU/lb
19 MJ/kg8,169 BTU/lb

Embodied Carbon (primary production)

1.8 kg CO₂/kg
1.6 kg CO₂/kg

Embodied Water

25 L/kg3 gal/lb
30 L/kg3.6 gal/lb

Typical Recycled Content

90%
85%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

65 kN·m/kg
49 kN·m/kg

Specific Stiffness (E / density)

23.7 MN·m/kg
23.3 MN·m/kg

Modulus of Resilience

317 kJ/m³
169 kJ/m³

Thermal Diffusivity

12.7 mm²/s
14 mm²/s

Thermal Shock Resistance Index

10
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 scaleA47 32510A220 45008

Manufacturing and finishing

CapabilityA220 45008A47 32510
Default condition——
Relative cost$$ Standard$ Budget
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.

A220 45008 vs A47 32510 — frequently asked

Is A220 45008 stronger than A47 32510?

Yes. A220 45008 has a typical yield strength of 330 MPa (47.9 ksi) against 240 MPa (34.8 ksi) for A47 32510 — about 38% more. Tensile strength is 470 MPa (68.2 ksi) vs 360 MPa (52.2 ksi).

Which is cheaper, A220 45008 or A47 32510?

A47 32510 is the lower-cost material: it sits in the budget tier ($) while A220 45008 is standard ($$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

Which is easier to machine, A220 45008 or A47 32510?

A47 32510. Its machinability rates excellent (85/100) against good (58/100) for A220 45008.

Ready to make it?

Upload a CAD file and FabDigit prices the part in A220 45008 and A47 32510 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.