Stainless Steel SUS430J1L 1/2H vs SUS430J1L 1/4H
Stainless Steel · SUS430J1L temper comparison
SUS430J1L 1/2H and SUS430J1L 1/4H are two conditions of the same stainless steel grade, SUS430J1L: 1/2H (half hard) versus 1/4H (quarter hard). The chemistry is identical, so every difference below comes from the condition. SUS430J1L 1/2H is the stronger of the two: yield strength 550 MPa (79.8 ksi) against 450 MPa (65.3 ksi) for SUS430J1L 1/4H, about 22% more; tensile strength follows at 620 MPa (89.9 ksi) vs 550 MPa (79.8 ksi). In exchange, SUS430J1L 1/4H is the more ductile: elongation 15% versus 8% for SUS430J1L 1/2H, and SUS430J1L 1/2H is harder (205 HB vs 180 HB). SUS430J1L 1/4H runs hotter in service (400°C vs 350°C continuous).
SUS430J1L 1/2HChoose it when strength drives the design.
SUS430J1L 1/4HChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
SUS430J1L 1/2H vs SUS430J1L 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
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 78 GPa11.3 Msi · Bulk Modulus 145 GPa21 Msi · Poisson's Ratio 0.29
Physical
Density and transition temperatures.
Same in both: Density 7.7 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,425°C2,597 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 26 W/m·K15 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.4 µm/m·K5.8 µin/in·°F · Latent Heat of Fusion 260 J/g112 BTU/lb · Min Service Temperature -30°C-22 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.9 % IACS · Electrical Resistivity 6×10⁻⁷ Ω·m23.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.25 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: Brazeability / Solderability 65 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 45 MJ/kg19,347 BTU/lb · Embodied Carbon (primary production) 3.2 kg CO₂/kg · Embodied Water 110 L/kg13.2 gal/lb · Typical Recycled Content 65%
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.
SUS430J1L 1/2H vs SUS430J1L 1/4H — frequently asked
Is SUS430J1L 1/2H stronger than SUS430J1L 1/4H?
Yes. SUS430J1L 1/2H has a typical yield strength of 550 MPa (79.8 ksi) against 450 MPa (65.3 ksi) for SUS430J1L 1/4H — about 22% more. Tensile strength is 620 MPa (89.9 ksi) vs 550 MPa (79.8 ksi).
Which condition does FabDigit quote by default, 1/2H or 1/4H?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
When should I choose SUS430J1L 1/2H over SUS430J1L 1/4H?
Pick SUS430J1L 1/2H when strength drives the design. Pick SUS430J1L 1/4H when the part is bent, formed or impact-loaded, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in SUS430J1L 1/2H and SUS430J1L 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.