Steel 34CrAlMo5-10 vs Nitralloy 135
Steel · grade comparison
Steel 34CrAlMo5-10 and Nitralloy 135 are both steel grades. Nitralloy 135 is the stronger of the two: yield strength 815 MPa (118 ksi) against 720 MPa (104 ksi) for 34CrAlMo5-10, about 13% more; tensile strength follows at 965 MPa (140 ksi) vs 900 MPa (131 ksi). Nitralloy 135 is the more ductile: elongation 17% versus 14% for 34CrAlMo5-10, and Nitralloy 135 is harder (302 HB vs 280 HB). On the shop floor, 34CrAlMo5-10 machines more easily (45 vs 35 out of 100).
34CrAlMo5-10Choose it when the part is machined in volume.
Nitralloy 135Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
34CrAlMo5-10 vs Nitralloy 135: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Melting Point (Solidus)
Same in both: Density 7.8 g/cm³0.28 lb/in³ · Liquidus Temperature 1,490°C2,714 °F
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Same in both: Thermal Conductivity 34 W/m·K19.6 BTU/hr·ft·°F · Latent Heat of Fusion 250 J/g107 BTU/lb · Max Service Temperature (continuous) 500°C932 °F · Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 2.2×10⁻⁷ Ω·m8.66 µΩ·in
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
Weldability
Formability (cold)
Polishability
Castability
Brazeability / Solderability
Same in both: Machinability Rating (AISI 1212 = 100 %) 50%
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 30%
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 | Nitralloy 135 |
|---|---|---|
| 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 Nitralloy 135 — frequently asked
Is Nitralloy 135 stronger than 34CrAlMo5-10?
Yes. Nitralloy 135 has a typical yield strength of 815 MPa (118 ksi) against 720 MPa (104 ksi) for 34CrAlMo5-10 — about 13% more. Tensile strength is 965 MPa (140 ksi) vs 900 MPa (131 ksi).
Which is cheaper, 34CrAlMo5-10 or Nitralloy 135?
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 is easier to machine, 34CrAlMo5-10 or Nitralloy 135?
34CrAlMo5-10, by a small margin. Both rate fair for machinability — 45/100 against 35/100 for Nitralloy 135; for welding the order is 34CrAlMo5-10 first (poor, 20/100) then Nitralloy 135 (poor, 15/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 34CrAlMo5-10 and Nitralloy 135 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.