Steel 27W140 vs M19
Steel · grade comparison
Steel 27W140 and M19 are both steel grades. 27W140 is the stronger of the two: yield strength 370 MPa (53.7 ksi) against 340 MPa (49.3 ksi) for M19, about 9% more. In exchange, M19 is the more ductile: elongation 25% versus 10% for 27W140, and 27W140 is harder (190 HV vs 150 HV). M19 is stiffer (200 GPa vs 190 GPa) and M19 conducts heat better (25 W/m·K vs 22 W/m·K). On the shop floor, M19 machines more easily (fair vs poor) and M19 welds better (50 vs 40 out of 100).
27W140Choose it when strength drives the design.
M19Choose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
27W140 vs M19: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Fatigue Strength (Endurance Limit)
Hardness, Rockwell B
Hardness, Vickers
Reduction in Area
Same in both: Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Shear Strength 320 MPa46.4 ksi
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Same in both: 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
Same in both: Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -60°C-76 °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
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 55 L/kg6.6 gal/lb · Typical Recycled Content 25%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Same in both: Thermal Shock Resistance Index 5
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 | 27W140 | M19 |
|---|---|---|
| Sheet metal | — | Yes |
| Default condition | — | Annealed |
| Relative cost | $$ Standard | $$ Standard |
| 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.
27W140 vs M19 — frequently asked
Is 27W140 stronger than M19?
Yes. 27W140 has a typical yield strength of 370 MPa (53.7 ksi) against 340 MPa (49.3 ksi) for M19 — about 9% more. Tensile strength is 470 MPa (68.2 ksi) vs 460 MPa (66.7 ksi).
Which is cheaper, 27W140 or M19?
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, 27W140 or M19?
M19. Its machinability rates fair (45/100) against poor (33/100) for 27W140; for welding the order is M19 first (fair, 50/100) then 27W140 (fair, 40/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 27W140 and M19 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.