FabDigitFabDigit

Steel Creusabro 4000 vs XAR 500

Steel · grade comparison

Steel Creusabro 4000 and XAR 500 are both steel grades. XAR 500 is the stronger of the two: yield strength 1,300 MPa (189 ksi) against 1,000 MPa (145 ksi) for Creusabro 4000, about 30% more; tensile strength follows at 1,700 MPa (247 ksi) vs 1,250 MPa (181 ksi). In exchange, Creusabro 4000 is the more ductile: elongation 12% versus 8% for XAR 500, and XAR 500 is harder (500 HB vs 400 HB). Creusabro 4000 runs hotter in service (400°C vs 250°C continuous). On the shop floor, Creusabro 4000 machines more easily (poor vs not recommended), Creusabro 4000 welds better (good vs fair), and XAR 500 sits in a lower cost tier (budget, $) than Creusabro 4000 (standard, $$).

Creusabro 4000Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

XAR 500Choose it when strength drives the design, or when cost is the deciding factor.

Creusabro 4000 vs XAR 500: properties

Creusabro 4000XAR 500

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

205 GPa29.7 Msi
210 GPa30.5 Msi

Shear Modulus

79 GPa11.5 Msi
80 GPa11.6 Msi

Bulk Modulus

165 GPa23.9 Msi
160 GPa23.2 Msi

Poisson's Ratio

0.3
0.29

Tensile Strength (Ultimate)

1,250 MPa181 ksi
1,700 MPa247 ksi

Yield Strength (0.2% offset)

1,000 MPa145 ksi
1,300 MPa189 ksi

Elongation at Break

12%
8%

Reduction in Area

45%
35%

Compressive Strength

1,050 MPa152 ksi
1,350 MPa196 ksi

Shear Strength

760 MPa110 ksi
1,020 MPa148 ksi

Fatigue Strength (Endurance Limit)

550 MPa79.8 ksi
700 MPa102 ksi

Fracture Toughness (K_IC)

70 MPa·√m63.7 ksi·√in
60 MPa·√m54.6 ksi·√in

Charpy V-Notch Impact (RT)

60 J44.3 ft·lbf
40 J29.5 ft·lbf

Hardness, Brinell

400 HB
500 HB

Hardness, Rockwell C

42 HRC
50 HRC

Hardness, Vickers

420 HV
525 HV

Physical

Density and transition temperatures.

Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,420°C2,588 °F · Liquidus Temperature 1,500°C2,732 °F

Thermal

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

Thermal Conductivity

36 W/m·K20.8 BTU/hr·ft·°F
33 W/m·K19.1 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

12.5 µm/m·K6.9 µin/in·°F
12 µm/m·K6.7 µin/in·°F

Max Service Temperature (continuous)

400°C752 °F
250°C482 °F

Min Service Temperature

-20°C-4 °F
-40°C-40 °F

Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Latent Heat of Fusion 270 J/g116 BTU/lb

Electrical

Conductivity and insulation.

Electrical Resistivity

2.4×10⁻⁷ Ω·m9.45 µΩ·in
2.2×10⁻⁷ Ω·m8.66 µΩ·in

Electrical Conductivity

—
7.8 % IACS

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

15 / 100
12 / 100

Galvanic Potential (seawater, vs SCE)

—
-0.6 V

Manufacturability

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

Machinability

25 / 100
12 / 100

Machinability Rating (AISI 1212 = 100 %)

20%
12%

Weldability

60 / 100
45 / 100

Formability (cold)

45 / 100
20 / 100

Polishability

45 / 100
55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

32 MJ/kg13,758 BTU/lb
30 MJ/kg12,898 BTU/lb

Embodied Carbon (primary production)

2.3 kg CO₂/kg
2.4 kg CO₂/kg

Embodied Water

55 L/kg6.6 gal/lb
60 L/kg7.2 gal/lb

Typical Recycled Content

30%
25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

159 kN·m/kg
217 kN·m/kg

Specific Stiffness (E / density)

26.1 MN·m/kg
26.8 MN·m/kg

Modulus of Resilience

2,439 kJ/m³
4,024 kJ/m³

Thermal Diffusivity

9.8 mm²/s
8.9 mm²/s

Thermal Shock Resistance Index

18
22

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 scaleXAR 500Creusabro 4000

Manufacturing and finishing

CapabilityCreusabro 4000XAR 500
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.

Creusabro 4000 vs XAR 500 — frequently asked

Is XAR 500 stronger than Creusabro 4000?

Yes. XAR 500 has a typical yield strength of 1,300 MPa (189 ksi) against 1,000 MPa (145 ksi) for Creusabro 4000 — about 30% more. Tensile strength is 1,700 MPa (247 ksi) vs 1,250 MPa (181 ksi).

Which is cheaper, Creusabro 4000 or XAR 500?

XAR 500 is the lower-cost material: it sits in the budget tier ($) while Creusabro 4000 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, Creusabro 4000 or XAR 500?

Creusabro 4000. Its machinability rates poor (25/100) against not recommended (12/100) for XAR 500; for welding the order is Creusabro 4000 first (good, 60/100) then XAR 500 (fair, 45/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Creusabro 4000 and XAR 500 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.