Steel Alloy 79 vs Ingot Iron
Steel · grade comparison
Steel Alloy 79 and Ingot Iron are both steel grades. Alloy 79 is the stronger of the two: yield strength 270 MPa (39.2 ksi) against 150 MPa (21.8 ksi) for Ingot Iron, about 80% more; tensile strength follows at 550 MPa (79.8 ksi) vs 275 MPa (39.9 ksi). In exchange, Ingot Iron is the more ductile: elongation 45% versus 40% for Alloy 79, and Alloy 79 is harder (120 HB vs 70 HB). Ingot Iron is lighter (7.87 g/cm³ vs 8.74 g/cm³ for Alloy 79) and Ingot Iron runs hotter in service (450°C vs 400°C continuous). On the shop floor, Ingot Iron machines more easily (fair vs poor), Ingot Iron welds better (excellent vs good), and Ingot Iron sits in a lower cost tier (standard, $$) than Alloy 79 (high, $$$$).
Alloy 79Choose it when strength drives the design.
Ingot IronChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
Alloy 79 vs Ingot Iron: 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Compressive Strength
Fracture Toughness (K_IC)
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi
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
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
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)
Brazeability / Solderability
Polishability
Castability
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 | Alloy 79 | Ingot Iron |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$ 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.
Alloy 79 vs Ingot Iron — frequently asked
Is Alloy 79 stronger than Ingot Iron?
Yes. Alloy 79 has a typical yield strength of 270 MPa (39.2 ksi) against 150 MPa (21.8 ksi) for Ingot Iron — about 80% more. Tensile strength is 550 MPa (79.8 ksi) vs 275 MPa (39.9 ksi).
Which is cheaper, Alloy 79 or Ingot Iron?
Ingot Iron is the lower-cost material: it sits in the standard tier ($$) while Alloy 79 is high ($$$$). 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, Alloy 79 or Ingot Iron?
Ingot Iron. Its machinability rates fair (45/100) against poor (32/100) for Alloy 79; for welding the order is Ingot Iron first (excellent, 95/100) then Alloy 79 (good, 60/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Alloy 79 and Ingot Iron 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.