Stainless Steel SUS890L 1/2H vs SUS890L 1/4H
Stainless Steel · SUS890L temper comparison
SUS890L 1/2H and SUS890L 1/4H are two conditions of the same stainless steel grade, SUS890L: 1/2H (half hard) versus 1/4H (quarter hard). The chemistry is identical, so every difference below comes from the condition. SUS890L 1/2H is the stronger of the two: yield strength 700 MPa (102 ksi) against 520 MPa (75.4 ksi) for SUS890L 1/4H, about 35% more; tensile strength follows at 900 MPa (131 ksi) vs 760 MPa (110 ksi). In exchange, SUS890L 1/4H is the more ductile: elongation 22% versus 14% for SUS890L 1/2H, and SUS890L 1/2H is harder (280 HB vs 240 HB).
SUS890L 1/2HChoose it when strength drives the design.
SUS890L 1/4HChoose it when the part is bent, formed or impact-loaded.
SUS890L 1/2H vs SUS890L 1/4H: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless 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 stainless 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
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 195 GPa28.3 Msi · Shear Modulus 75 GPa10.9 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.98 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,320°C2,408 °F · Liquidus Temperature 1,390°C2,534 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 12 W/m·K6.9 BTU/hr·ft·°F · Specific Heat Capacity 450 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 15.3 µm/m·K8.5 µin/in·°F · Latent Heat of Fusion 275 J/g118 BTU/lb · Max Service Temperature (continuous) 300°C572 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.7 % IACS · Electrical Resistivity 1×10⁻⁶ Ω·m39.4 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.05 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 45 / 100 · Brazeability / Solderability 55 / 100 · Polishability 78 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 68 MJ/kg29,235 BTU/lb · Embodied Carbon (primary production) 5.6 kg CO₂/kg · Embodied Water 200 L/kg24 gal/lb · Typical Recycled Content 45%
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
SUS890L 1/2H vs SUS890L 1/4H — frequently asked
Is SUS890L 1/2H stronger than SUS890L 1/4H?
Yes. SUS890L 1/2H has a typical yield strength of 700 MPa (102 ksi) against 520 MPa (75.4 ksi) for SUS890L 1/4H — about 35% more. Tensile strength is 900 MPa (131 ksi) vs 760 MPa (110 ksi).
Which condition does FabDigit quote by default, 1/2H or 1/4H?
Annealed is the default SUS890L condition in the FabDigit quote flow (neither 1/2H nor 1/4H). 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.
Which welds better, SUS890L 1/2H or SUS890L 1/4H?
SUS890L 1/4H. Its weldability rates very good (70/100) against good (65/100) for SUS890L 1/2H.
Ready to make it?
Upload a CAD file and FabDigit prices the part in SUS890L 1/2H and SUS890L 1/4H 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.