Steel GX15CrMo9-1 vs WC4
Steel · grade comparison
Steel GX15CrMo9-1 and WC4 are both steel grades. Both yield at about 320 MPa — strength does not separate them. WC4 is the more ductile: elongation 24% versus 20% for GX15CrMo9-1, and GX15CrMo9-1 is harder (185 HB vs 163 HB). GX15CrMo9-1 runs hotter in service (600°C vs 540°C continuous) and WC4 conducts heat better (42 W/m·K vs 27 W/m·K). On the shop floor, WC4 machines more easily (good vs fair), WC4 welds better (good vs fair), and WC4 sits in a lower cost tier (standard, $$) than GX15CrMo9-1 (premium, $$$).
GX15CrMo9-1Choose it when the part sees heat.
WC4Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
GX15CrMo9-1 vs WC4: 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.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
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 Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
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 | GX15CrMo9-1 | WC4 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$ Standard |
| 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.
GX15CrMo9-1 vs WC4 — frequently asked
What is the difference between GX15CrMo9-1 and WC4?
Steel GX15CrMo9-1 and WC4 are both steel grades. Both yield at about 320 MPa — strength does not separate them. WC4 is the more ductile: elongation 24% versus 20% for GX15CrMo9-1, and GX15CrMo9-1 is harder (185 HB vs 163 HB).
Which is cheaper, GX15CrMo9-1 or WC4?
WC4 is the lower-cost material: it sits in the standard tier ($$) while GX15CrMo9-1 is premium ($$$). 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, GX15CrMo9-1 or WC4?
WC4. Its machinability rates good (58/100) against fair (42/100) for GX15CrMo9-1; for welding the order is WC4 first (good, 55/100) then GX15CrMo9-1 (fair, 40/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in GX15CrMo9-1 and WC4 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.