Steel 34CrAlMo5-10 vs 34CrAlNi7-10
Steel · grade comparison
Steel 34CrAlMo5-10 and 34CrAlNi7-10 are both steel grades. 34CrAlNi7-10 is the stronger of the two: yield strength 780 MPa (113 ksi) against 720 MPa (104 ksi) for 34CrAlMo5-10, about 8% more; tensile strength follows at 1,000 MPa (145 ksi) vs 900 MPa (131 ksi). 34CrAlNi7-10 is harder — 310 HB against 280 HB for 34CrAlMo5-10 — which matters for wear surfaces and threads. 34CrAlMo5-10 conducts electricity better (8 % IACS vs 6.6 % IACS).
34CrAlNi7-10Choose it when strength drives the design, or when surface hardness matters.
34CrAlMo5-10 vs 34CrAlNi7-10: 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.
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)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Poisson's Ratio 0.29 · Charpy V-Notch Impact (RT) 45 J33.2 ft·lbf
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 7.8 g/cm³0.28 lb/in³
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Same in both: Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Max Service Temperature (continuous) 500°C932 °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).
Corrosion Resistance
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 Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Polishability
Brazeability / Solderability
Same in both: Machinability 45 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 31 MJ/kg13,328 BTU/lb · Embodied Carbon (primary production) 2.2 kg CO₂/kg
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Stiffness (E / density) 26.9 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 | 34CrAlMo5-10 | 34CrAlNi7-10 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$ Standard | $$ 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.
34CrAlMo5-10 vs 34CrAlNi7-10 — frequently asked
Is 34CrAlNi7-10 stronger than 34CrAlMo5-10?
Yes. 34CrAlNi7-10 has a typical yield strength of 780 MPa (113 ksi) against 720 MPa (104 ksi) for 34CrAlMo5-10 — about 8% more. Tensile strength is 1,000 MPa (145 ksi) vs 900 MPa (131 ksi).
Which is cheaper, 34CrAlMo5-10 or 34CrAlNi7-10?
Both sit in the same relative cost tier ($$, standard); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, 34CrAlMo5-10 or 34CrAlNi7-10?
34CrAlMo5-10. Its weldability rates poor (20/100) against not recommended (12/100) for 34CrAlNi7-10.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 34CrAlMo5-10 and 34CrAlNi7-10 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.