FabDigitFabDigit

Steel A209 T1 vs AR500

Steel · grade comparison

Steel A209 T1 and AR500 are both steel grades. AR500 is the stronger of the two: yield strength 1,350 MPa (196 ksi) against 260 MPa (37.7 ksi) for A209 T1, about 5.2 times as much; tensile strength follows at 1,650 MPa (239 ksi) vs 450 MPa (65.3 ksi). In exchange, A209 T1 is the more ductile: elongation 35% versus 9% for AR500, and AR500 is harder (500 HB vs 140 HB). A209 T1 runs hotter in service (510°C vs 250°C continuous) and A209 T1 conducts electricity better (9 % IACS vs 7.5 % IACS). On the shop floor, A209 T1 machines more easily (good vs not recommended), A209 T1 welds better (very good vs fair), and A209 T1 sits in a lower cost tier (budget, $) than AR500 (high, $$$$).

A209 T1Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

AR500Choose it when strength drives the design.

A209 T1 vs AR500: properties

A209 T1AR500

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

450 MPa65.3 ksi
1,650 MPa239 ksi

Yield Strength (0.2% offset)

260 MPa37.7 ksi
1,350 MPa196 ksi

Elongation at Break

35%
9%

Reduction in Area

55%
30%

Compressive Strength

260 MPa37.7 ksi
1,400 MPa203 ksi

Shear Strength

280 MPa40.6 ksi
1,000 MPa145 ksi

Fatigue Strength (Endurance Limit)

200 MPa29 ksi
700 MPa102 ksi

Fracture Toughness (K_IC)

90 MPa·√m81.9 ksi·√in
50 MPa·√m45.5 ksi·√in

Charpy V-Notch Impact (RT)

60 J44.3 ft·lbf
35 J25.8 ft·lbf

Hardness, Brinell

140 HB
500 HB

Hardness, Rockwell B

76 HRB
—

Hardness, Vickers

148 HV
525 HV

Hardness, Rockwell C

—
50 HRC

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)

1,490°C2,714 °F
1,420°C2,588 °F

Liquidus Temperature

1,520°C2,768 °F
1,500°C2,732 °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

44 W/m·K25.4 BTU/hr·ft·°F
40 W/m·K23.1 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

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

Max Service Temperature (continuous)

510°C950 °F
250°C482 °F

Min Service Temperature

-29°C-20 °F
-40°C-40 °F

Same in both: Latent Heat of Fusion 270 J/g116 BTU/lb

Electrical

Conductivity and insulation.

Electrical Conductivity

9 % IACS
7.5 % IACS

Electrical Resistivity

1.9×10⁻⁷ Ω·m7.48 µΩ·in
2.3×10⁻⁷ Ω·m9.06 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.6 V
-0.62 V

Same in both: Corrosion Resistance 13 / 100

Manufacturability

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

Machinability

60 / 100
12 / 100

Machinability Rating (AISI 1212 = 100 %)

60%
10%

Weldability

75 / 100
45 / 100

Formability (cold)

68 / 100
15 / 100

Brazeability / Solderability

50 / 100
—

Polishability

50 / 100
55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

26 MJ/kg11,178 BTU/lb
30 MJ/kg12,898 BTU/lb

Embodied Carbon (primary production)

2 kg CO₂/kg
2.3 kg CO₂/kg

Embodied Water

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

Same in both: Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

57 kN·m/kg
210 kN·m/kg

Modulus of Resilience

165 kJ/m³
4,445 kJ/m³

Thermal Diffusivity

12.1 mm²/s
10.8 mm²/s

Thermal Shock Resistance Index

8
27

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 scaleAR500A209 T1

Manufacturing and finishing

CapabilityA209 T1AR500
CNC machining—Yes
Sheet metal—Yes
Default condition—Q&T
Relative cost$ Budget$$$$ High
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.

A209 T1 vs AR500 — frequently asked

Is AR500 stronger than A209 T1?

Yes. AR500 has a typical yield strength of 1,350 MPa (196 ksi) against 260 MPa (37.7 ksi) for A209 T1 — about 5.2 times as much. Tensile strength is 1,650 MPa (239 ksi) vs 450 MPa (65.3 ksi).

Which is cheaper, A209 T1 or AR500?

A209 T1 is the lower-cost material: it sits in the budget tier ($) while AR500 is high ($$$$). 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, A209 T1 or AR500?

A209 T1. Its machinability rates good (60/100) against not recommended (12/100) for AR500; for welding the order is A209 T1 first (very good, 75/100) then AR500 (fair, 45/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in A209 T1 and AR500 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.