Stainless Steel PH14-8Mo-A vs PH14-8Mo-CH900
Stainless Steel · PH14-8Mo temper comparison
PH14-8Mo-A and PH14-8Mo-CH900 are two conditions of the same stainless steel grade, PH14-8Mo: A (solution annealed) versus CH900 (cold rolled (≈60 %) from Condition A + age 482 °C). The chemistry is identical, so every difference below comes from the condition. PH14-8Mo-CH900 is the stronger of the two: yield strength 1,720 MPa (249 ksi) against 415 MPa (60.2 ksi) for PH14-8Mo-A, about 4.1 times as much; tensile strength follows at 1,790 MPa (260 ksi) vs 895 MPa (130 ksi). In exchange, PH14-8Mo-A is the more ductile: elongation 25% versus 2% for PH14-8Mo-CH900, and PH14-8Mo-CH900 is harder (49 HRC vs 25 HRC). On the shop floor, PH14-8Mo-A machines more easily (fair vs poor) and PH14-8Mo-A welds better (good vs poor).
PH14-8Mo-AChoose it when the part is bent, formed or impact-loaded, or when the part is machined in volume.
PH14-8Mo-CH900Choose it when strength drives the design.
PH14-8Mo-A vs PH14-8Mo-CH900: 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, Rockwell C
Hardness, Vickers
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 · Reduction in Area 60% · Hardness, Rockwell B 95 HRB
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 1,440°C2,624 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 15.9 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) 11 µm/m·K6.1 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -196°C-321 °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) 58 MJ/kg24,936 BTU/lb · Embodied Carbon (primary production) 4.6 kg CO₂/kg · Embodied Water 200 L/kg24 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.
PH14-8Mo-A vs PH14-8Mo-CH900 — frequently asked
Is PH14-8Mo-CH900 stronger than PH14-8Mo-A?
Yes. PH14-8Mo-CH900 has a typical yield strength of 1,720 MPa (249 ksi) against 415 MPa (60.2 ksi) for PH14-8Mo-A — about 4.1 times as much. Tensile strength is 1,790 MPa (260 ksi) vs 895 MPa (130 ksi).
Which condition does FabDigit quote by default, A or CH900?
A is the default PH14-8Mo 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.
Which is easier to machine, PH14-8Mo-A or PH14-8Mo-CH900?
PH14-8Mo-A. Its machinability rates fair (40/100) against poor (20/100) for PH14-8Mo-CH900; for welding the order is PH14-8Mo-A first (good, 60/100) then PH14-8Mo-CH900 (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in PH14-8Mo-A and PH14-8Mo-CH900 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.