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Steel Hardox 600 vs XAR 500

Steel · grade comparison

Steel Hardox 600 and XAR 500 are both steel grades. Hardox 600 is the stronger of the two: yield strength 1,650 MPa (239 ksi) against 1,300 MPa (189 ksi) for XAR 500, about 27% more; tensile strength follows at 2,000 MPa (290 ksi) vs 1,700 MPa (247 ksi). In exchange, XAR 500 is the more ductile: elongation 8% versus 7% for Hardox 600, and Hardox 600 is harder (600 HB vs 500 HB). On the shop floor, XAR 500 welds better (fair vs poor) and XAR 500 sits in a lower cost tier (budget, $) than Hardox 600 (standard, $$).

Hardox 600Choose it when strength drives the design.

XAR 500Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

Hardox 600 vs XAR 500: properties

Hardox 600XAR 500

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

81 GPa11.7 Msi
80 GPa11.6 Msi

Poisson's Ratio

0.3
0.29

Tensile Strength (Ultimate)

2,000 MPa290 ksi
1,700 MPa247 ksi

Yield Strength (0.2% offset)

1,650 MPa239 ksi
1,300 MPa189 ksi

Elongation at Break

7%
8%

Reduction in Area

30%
35%

Compressive Strength

1,700 MPa247 ksi
1,350 MPa196 ksi

Shear Strength

1,200 MPa174 ksi
1,020 MPa148 ksi

Fatigue Strength (Endurance Limit)

750 MPa109 ksi
700 MPa102 ksi

Fracture Toughness (K_IC)

45 MPa·√m41 ksi·√in
60 MPa·√m54.6 ksi·√in

Charpy V-Notch Impact (RT)

20 J14.8 ft·lbf
40 J29.5 ft·lbf

Hardness, Brinell

600 HB
500 HB

Hardness, Rockwell C

57 HRC
50 HRC

Hardness, Vickers

635 HV
525 HV

Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Bulk Modulus 160 GPa23.2 Msi

Physical

Density and transition temperatures.

Melting Point (Solidus)

1,450°C2,642 °F
1,420°C2,588 °F

Same in both: Density 7.85 g/cm³0.28 lb/in³ · Liquidus Temperature 1,500°C2,732 °F

Thermal

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

Thermal Conductivity

30 W/m·K17.3 BTU/hr·ft·°F
33 W/m·K19.1 BTU/hr·ft·°F

Latent Heat of Fusion

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

Same in both: Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F · Max Service Temperature (continuous) 250°C482 °F · Min Service Temperature -40°C-40 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

2.7×10⁻⁷ Ω·m10.6 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

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

8 / 100
12 / 100

Machinability Rating (AISI 1212 = 100 %)

7%
12%

Weldability

30 / 100
45 / 100

Formability (cold)

12 / 100
20 / 100

Same in both: Polishability 55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

2.3 kg CO₂/kg
2.4 kg CO₂/kg

Embodied Water

50 L/kg6 gal/lb
60 L/kg7.2 gal/lb

Same in both: Embodied Energy (primary production) 30 MJ/kg12,898 BTU/lb · Typical Recycled Content 25%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

255 kN·m/kg
217 kN·m/kg

Modulus of Resilience

6,482 kJ/m³
4,024 kJ/m³

Thermal Diffusivity

8.1 mm²/s
8.9 mm²/s

Thermal Shock Resistance Index

24
22

Same in both: Specific Stiffness (E / density) 26.8 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 scaleHardox 600XAR 500

Manufacturing and finishing

CapabilityHardox 600XAR 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.

Hardox 600 vs XAR 500 — frequently asked

Is Hardox 600 stronger than XAR 500?

Yes. Hardox 600 has a typical yield strength of 1,650 MPa (239 ksi) against 1,300 MPa (189 ksi) for XAR 500 — about 27% more. Tensile strength is 2,000 MPa (290 ksi) vs 1,700 MPa (247 ksi).

Which is cheaper, Hardox 600 or XAR 500?

XAR 500 is the lower-cost material: it sits in the budget tier ($) while Hardox 600 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 welds better, Hardox 600 or XAR 500?

XAR 500. Its weldability rates fair (45/100) against poor (30/100) for Hardox 600.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Hardox 600 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.