Steel ASP 2030 vs CPM M4
Steel · grade comparison
Steel ASP 2030 and CPM M4 are both steel grades. ASP 2030 is the stronger of the two: yield strength 600 MPa (87 ksi) against 550 MPa (79.8 ksi) for CPM M4, about 9% more; tensile strength follows at 950 MPa (138 ksi) vs 850 MPa (123 ksi). ASP 2030 is harder — 300 HB against 241 HB for CPM M4 — which matters for wear surfaces and threads. CPM M4 runs hotter in service (540°C vs 300°C continuous).
ASP 2030Choose it when strength drives the design, or when surface hardness matters.
CPM M4Choose it when the part sees heat.
ASP 2030 vs CPM M4: 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Reduction in Area
Compressive Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Shear Strength
Charpy V-Notch Impact (RT)
Hardness, Rockwell B
Same in both: Bulk Modulus 168 GPa24.4 Msi · Elongation at Break 12%
Physical
Density and transition temperatures.
Density
Liquidus Temperature
Same in both: Melting Point (Solidus) 1,250°C2,282 °F
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Min Service Temperature
Latent Heat of Fusion
Same in both: Thermal Conductivity 24 W/m·K13.9 BTU/hr·ft·°F
Electrical
Conductivity and insulation.
Electrical Resistivity
Electrical Conductivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Galvanic Potential (seawater, vs SCE)
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Polishability
Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 20 / 100 · Brazeability / Solderability 45 / 100
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 | ASP 2030 | CPM M4 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.
ASP 2030 vs CPM M4 — frequently asked
Is ASP 2030 stronger than CPM M4?
Yes. ASP 2030 has a typical yield strength of 600 MPa (87 ksi) against 550 MPa (79.8 ksi) for CPM M4 — about 9% more. Tensile strength is 950 MPa (138 ksi) vs 850 MPa (123 ksi).
Which is cheaper, ASP 2030 or CPM M4?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose ASP 2030 over CPM M4?
Pick ASP 2030 when strength drives the design, or when surface hardness matters. Pick CPM M4 when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in ASP 2030 and CPM M4 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.