Stainless Steel 17-6PH-H1100 vs 17-6PH-H900
Stainless Steel · 17-6PH temper comparison
17-6PH-H1100 and 17-6PH-H900 are two conditions of the same stainless steel grade, 17-6PH: H1100 (aged 593 °C (1100 °F) for 4 h) versus H900 (aged 482 °C (900 °F) for 1 h, peak hardness). The chemistry is identical, so every difference below comes from the condition. 17-6PH-H900 is the stronger of the two: yield strength 1,275 MPa (185 ksi) against 900 MPa (131 ksi) for 17-6PH-H1100, about 42% more; tensile strength follows at 1,380 MPa (200 ksi) vs 1,035 MPa (150 ksi). In exchange, 17-6PH-H1100 is the more ductile: elongation 15% versus 8% for 17-6PH-H900, and 17-6PH-H900 is harder (45 HRC vs 33 HRC). 17-6PH-H1100 runs hotter in service (400°C vs 300°C continuous). On the shop floor, 17-6PH-H1100 machines more easily (33 vs 22 out of 100).
17-6PH-H1100Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
17-6PH-H900Choose it when strength drives the design.
17-6PH-H1100 vs 17-6PH-H900: 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
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Rockwell C
Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.28 · Shear Strength 620 MPa89.9 ksi · Hardness, Brinell 285 HB · Hardness, Vickers 300 HV
Physical
Density and transition temperatures.
Same in both: Density 7.8 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,400°C2,552 °F · Liquidus Temperature 1,450°C2,642 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 16 W/m·K9.2 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.8 µm/m·K6 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -75°C-103 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.2 % IACS · Electrical Resistivity 8×10⁻⁷ Ω·m31.5 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 45 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 56 MJ/kg24,076 BTU/lb · Embodied Carbon (primary production) 5 kg CO₂/kg · Embodied Water 210 L/kg25.2 gal/lb · Typical Recycled Content 35%
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.
17-6PH-H1100 vs 17-6PH-H900 — frequently asked
Is 17-6PH-H900 stronger than 17-6PH-H1100?
Yes. 17-6PH-H900 has a typical yield strength of 1,275 MPa (185 ksi) against 900 MPa (131 ksi) for 17-6PH-H1100 — about 42% more. Tensile strength is 1,380 MPa (200 ksi) vs 1,035 MPa (150 ksi).
Which condition does FabDigit quote by default, H1100 or H900?
A is the default 17-6PH condition in the FabDigit quote flow (neither H1100 nor H900). 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, 17-6PH-H1100 or 17-6PH-H900?
17-6PH-H1100, by a small margin. Both rate poor for machinability — 33/100 against 22/100 for 17-6PH-H900; for welding the order is 17-6PH-H900 first (fair, 45/100) then 17-6PH-H1100 (fair, 38/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 17-6PH-H1100 and 17-6PH-H900 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.