Stainless Steel 13-8 PH-H1025 vs 13-8 PH-H1150
Stainless Steel · 13-8 PH temper comparison
13-8 PH-H1025 and 13-8 PH-H1150 are two conditions of the same stainless steel grade, 13-8 PH: H1025 (aged 552 °C (1025 °F) for 4 h) versus H1150 (overaged 621 °C (1150 °F) for 4 h, maximum toughness). The chemistry is identical, so every difference below comes from the condition. 13-8 PH-H1025 is the stronger of the two: yield strength 1,310 MPa (190 ksi) against 930 MPa (135 ksi) for 13-8 PH-H1150, about 41% more; tensile strength follows at 1,415 MPa (205 ksi) vs 1,035 MPa (150 ksi). In exchange, 13-8 PH-H1150 is the more ductile: elongation 18% versus 14% for 13-8 PH-H1025, and 13-8 PH-H1025 is harder (43 HRC vs 32 HRC). 13-8 PH-H1150 runs hotter in service (480°C vs 425°C continuous).
13-8 PH-H1025Choose it when strength drives the design.
13-8 PH-H1150Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
13-8 PH-H1025 vs 13-8 PH-H1150: 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 C
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 78 GPa11.3 Msi · Bulk Modulus 155 GPa22.5 Msi · Poisson's Ratio 0.28
Physical
Density and transition temperatures.
Same in both: Density 7.76 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,400°C2,552 °F · Liquidus Temperature 1,440°C2,624 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 14 W/m·K8.1 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.6 µm/m·K5.9 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -73°C-99 °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) -0.15 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Same in both: Weldability 62 / 100 · Formability (cold) 28 / 100 · Castability 35 / 100 · Brazeability / Solderability 45 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 62 MJ/kg26,655 BTU/lb · Embodied Carbon (primary production) 5.2 kg CO₂/kg · Embodied Water 130 L/kg15.6 gal/lb · Typical Recycled Content 30%
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.
13-8 PH-H1025 vs 13-8 PH-H1150 — frequently asked
Is 13-8 PH-H1025 stronger than 13-8 PH-H1150?
Yes. 13-8 PH-H1025 has a typical yield strength of 1,310 MPa (190 ksi) against 930 MPa (135 ksi) for 13-8 PH-H1150 — about 41% more. Tensile strength is 1,415 MPa (205 ksi) vs 1,035 MPa (150 ksi).
Which condition does FabDigit quote by default, H1025 or H1150?
Condition A is the default 13-8 PH condition in the FabDigit quote flow (neither H1025 nor H1150). 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 is easier to machine, 13-8 PH-H1025 or 13-8 PH-H1150?
13-8 PH-H1150, by a small margin. Both rate poor for machinability — 32/100 against 26/100 for 13-8 PH-H1025.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 13-8 PH-H1025 and 13-8 PH-H1150 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.