Steel 1141 vs 11SMnPb37
Steel · grade comparison
Steel 1141 and 11SMnPb37 are both steel grades, both machining-friendly steel. 11SMnPb37 is the stronger of the two: yield strength 415 MPa (60.2 ksi) against 360 MPa (52.2 ksi) for 1141, about 15% more. In exchange, 1141 is the more ductile: elongation 22% versus 10% for 11SMnPb37, and 1141 is harder (192 HB vs 163 HB). 1141 runs hotter in service (425°C vs 300°C continuous). On the shop floor, 11SMnPb37 machines more easily (excellent vs good), 1141 welds better (poor vs not recommended), and 11SMnPb37 sits in a lower cost tier (budget, $) than 1141 (standard, $$).
1141Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
11SMnPb37Choose it when strength drives the design, or when the part is machined in volume.
1141 vs 11SMnPb37: 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
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
Same in both: Shear Modulus 80 GPa11.6 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
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
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Thermal Expansion (CTE, 20–100 °C) 11.7 µm/m·K6.5 µin/in·°F · Min Service Temperature -20°C-4 °F
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
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb
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 | 1141 | 11SMnPb37 |
|---|---|---|
| Default condition | HR | CD |
| Relative cost | $$ Standard | $ Budget |
| Min. machined wall | 0.8 mm | 0.8 mm |
| Best machined surface | Ra 1.6 µm | Ra 1.6 µm |
Both are offered for CNC machining. Both take the same 38 finishes: AlCrN, AlTiN, Black Oxide, CVD Al2O3, CVD TiCN, CVD TiN, Cerakote, Chrome Plating, Copper Plating, CrN, DLC, E-Coating and 26 more.
1141 vs 11SMnPb37 — frequently asked
Is 11SMnPb37 stronger than 1141?
Yes. 11SMnPb37 has a typical yield strength of 415 MPa (60.2 ksi) against 360 MPa (52.2 ksi) for 1141 — about 15% more. Tensile strength is 540 MPa (78.3 ksi) vs 675 MPa (97.9 ksi).
Which is cheaper, 1141 or 11SMnPb37?
11SMnPb37 is the lower-cost material: it sits in the budget tier ($) while 1141 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, 1141 or 11SMnPb37?
11SMnPb37. Its machinability rates excellent (95/100) against good (68/100) for 1141; for welding the order is 1141 first (poor, 25/100) then 11SMnPb37 (not recommended, 8/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1141 and 11SMnPb37 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.