Steel E195 +N vs E195 +SR
Steel · E195 temper comparison
E195 +N and E195 +SR are two conditions of the same steel grade, E195: +N (normalized) versus +SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. E195 +SR is the stronger of the two: yield strength 280 MPa (40.6 ksi) against 230 MPa (33.4 ksi) for E195 +N, about 22% more; tensile strength follows at 390 MPa (56.6 ksi) vs 370 MPa (53.7 ksi). In exchange, E195 +N is the more ductile: elongation 32% versus 18% for E195 +SR, and E195 +SR is harder (120 HB vs 105 HB).
E195 +NChoose it when the part is bent, formed or impact-loaded.
E195 +SRChoose it when strength drives the design.
E195 +N vs E195 +SR: 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 210 GPa30.5 Msi · Shear Modulus 81 GPa11.7 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29 · Reduction in Area 60% · Compressive Strength 230 MPa33.4 ksi · Fracture Toughness (K_IC) 130 MPa·√m118 ksi·√in · Hardness, Rockwell B 60 HRB
Physical
Density and transition temperatures.
Same in both: Density 7.85 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,495°C2,723 °F · Liquidus Temperature 1,525°C2,777 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 52 W/m·K30 BTU/hr·ft·°F · Specific Heat Capacity 470 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12 µm/m·K6.7 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 350°C662 °F · Min Service Temperature -20°C-4 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 11.5 % IACS · Electrical Resistivity 1.5×10⁻⁷ Ω·m5.91 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.61 V · Corrosion Resistance 10 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Machinability 62 / 100 · Castability 40 / 100 · Brazeability / Solderability 80 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 25 MJ/kg10,748 BTU/lb · Embodied Carbon (primary production) 2 kg CO₂/kg · Embodied Water 50 L/kg6 gal/lb · Typical Recycled Content 30%
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.
E195 +N vs E195 +SR — frequently asked
Is E195 +SR stronger than E195 +N?
Yes. E195 +SR has a typical yield strength of 280 MPa (40.6 ksi) against 230 MPa (33.4 ksi) for E195 +N — about 22% more. Tensile strength is 390 MPa (56.6 ksi) vs 370 MPa (53.7 ksi).
Which condition does FabDigit quote by default, +N or +SR?
+N is the default E195 condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
When should I choose E195 +N over E195 +SR?
Pick E195 +N when the part is bent, formed or impact-loaded. Pick E195 +SR when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in E195 +N and E195 +SR 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.