Steel Dillidur 400V vs XAR 400
Steel · grade comparison
Steel Dillidur 400V and XAR 400 are both steel grades. Dillidur 400V is the stronger of the two: yield strength 1,100 MPa (160 ksi) against 1,000 MPa (145 ksi) for XAR 400, about 10% more. Dillidur 400V conducts electricity better (7.8 % IACS vs 7 % IACS). On the shop floor, XAR 400 forms better (fair vs poor).
Dillidur 400VChoose it when strength drives the design.
Dillidur 400V vs XAR 400: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Yield Strength (0.2% offset)
Compressive Strength
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Shear Modulus 81 GPa11.7 Msi · Bulk Modulus 165 GPa23.9 Msi · Poisson's Ratio 0.29 · Tensile Strength (Ultimate) 1,250 MPa181 ksi · Elongation at Break 10% · Reduction in Area 40% · Shear Strength 750 MPa109 ksi · Fatigue Strength (Endurance Limit) 550 MPa79.8 ksi · Hardness, Brinell 400 HB · Hardness, Rockwell C 43 HRC · Hardness, Vickers 420 HV
Physical
Density and transition temperatures.
Melting Point (Solidus)
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
Latent Heat of Fusion
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 Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Same in both: Corrosion Resistance 12 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Brazeability / Solderability
Same in both: Machinability Rating (AISI 1212 = 100 %) 25% · Polishability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 25%
Common Calculations
Ratios derived from the values above.
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Strength (UTS / density) 159 kN·m/kg · 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.
Manufacturing and finishing
| Capability | Dillidur 400V | XAR 400 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $ Budget | $ 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.
Dillidur 400V vs XAR 400 — frequently asked
Is Dillidur 400V stronger than XAR 400?
Yes. Dillidur 400V has a typical yield strength of 1,100 MPa (160 ksi) against 1,000 MPa (145 ksi) for XAR 400 — about 10% more. Tensile strength is 1,250 MPa (181 ksi) vs 1,250 MPa (181 ksi).
Which is cheaper, Dillidur 400V or XAR 400?
Both sit in the same relative cost tier ($, budget); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Dillidur 400V or XAR 400?
XAR 400. Its weldability rates good (60/100) against good (55/100) for Dillidur 400V.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Dillidur 400V and XAR 400 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.