Steel 22MnB5 vs SPFH590
Steel · grade comparison
Steel 22MnB5 and SPFH590 are both steel grades. SPFH590 is the stronger of the two: yield strength 470 MPa (68.2 ksi) against 380 MPa (55.1 ksi) for 22MnB5, about 24% more; tensile strength follows at 640 MPa (92.8 ksi) vs 560 MPa (81.2 ksi). SPFH590 is the more ductile: elongation 25% versus 22% for 22MnB5, and SPFH590 is harder (190 HB vs 160 HB). SPFH590 runs hotter in service (300°C vs 250°C continuous) and SPFH590 conducts heat better (46 W/m·K vs 32 W/m·K). On the shop floor, SPFH590 welds better (very good vs good) and SPFH590 sits in a lower cost tier (budget, $) than 22MnB5 (standard, $$).
SPFH590Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
22MnB5 vs SPFH590: 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)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Fracture Toughness (K_IC)
Same in both: Bulk Modulus 160 GPa23.2 Msi
Physical
Density and transition temperatures.
Melting Point (Solidus)
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Liquidus Temperature 1,520°C2,768 °F
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)
Same in both: Min Service Temperature -40°C-40 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Same in both: Corrosion Resistance 12 / 100
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
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Same in both: Embodied Water 40 L/kg4.8 gal/lb · Typical Recycled Content 20%
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 | 22MnB5 | SPFH590 |
|---|---|---|
| Sheet metal | Yes | — |
| Default condition | CR | — |
| Relative cost | $$ Standard | $ Budget |
| Min. machined wall | — | — |
| Best machined surface | — | — |
| Black Oxide | Yes | — |
| Cerakote | Yes | — |
| Chrome Plating | Yes | — |
| E-Coating | Yes | — |
| Hot-Dip Galvanizing | Yes | — |
| Nickel Plating | Yes | — |
| PTFE Coating | Yes | — |
| Painting | Yes | — |
| Powder Coating | Yes | — |
| Tin Plating | Yes | — |
| Zinc Plating | Yes | — |
| Zinc-Flake (Dip-Spin) Coating | Yes | — |
| Zinc-Nickel Plating | Yes | — |
They share 9 finishes: Copper Plating, Electroless Nickel (EN), Epoxy Coating, Gold Plating, Hard Chrome Plating, Manganese Phosphate, Plasma Spray, Silver Plating, Zinc Phosphate.
22MnB5 vs SPFH590 — frequently asked
Is SPFH590 stronger than 22MnB5?
Yes. SPFH590 has a typical yield strength of 470 MPa (68.2 ksi) against 380 MPa (55.1 ksi) for 22MnB5 — about 24% more. Tensile strength is 640 MPa (92.8 ksi) vs 560 MPa (81.2 ksi).
Which is cheaper, 22MnB5 or SPFH590?
SPFH590 is the lower-cost material: it sits in the budget tier ($) while 22MnB5 is standard ($$). 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, 22MnB5 or SPFH590?
22MnB5. Its machinability rates good (55/100) against fair (48/100) for SPFH590; for welding the order is SPFH590 first (very good, 78/100) then 22MnB5 (good, 65/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 22MnB5 and SPFH590 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.