Titanium SP-700 AS-WELDED vs SP-700-ST
Titanium · SP-700 temper comparison
SP-700 AS-WELDED and SP-700-ST are two conditions of the same titanium grade, SP-700: AS-WELDED (as-welded deposit) versus ST (solution annealed). The chemistry is identical, so every difference below comes from the condition. SP-700 AS-WELDED is the stronger of the two: yield strength 870 MPa (126 ksi) against 790 MPa (115 ksi) for SP-700-ST, about 10% more. In exchange, SP-700-ST is the more ductile: elongation 20% versus 8% for SP-700 AS-WELDED, and SP-700 AS-WELDED is harder (320 HB vs 285 HB). On the shop floor, SP-700-ST welds better (very good vs good).
SP-700 AS-WELDEDChoose it when strength drives the design.
SP-700-STChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
SP-700 AS-WELDED vs SP-700-ST: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all titanium 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 titanium 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.
Elastic (Young's) Modulus
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: Shear Modulus 43 GPa6.2 Msi · Bulk Modulus 110 GPa16 Msi · Poisson's Ratio 0.32
Physical
Density and transition temperatures.
Same in both: Density 4.54 g/cm³0.16 lb/in³ · Melting Point (Solidus) 1,590°C2,894 °F · Liquidus Temperature 1,650°C3,002 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 7 W/m·K4 BTU/hr·ft·°F · Specific Heat Capacity 530 J/kg·K0.13 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 9.4 µm/m·K5.2 µin/in·°F · Latent Heat of Fusion 390 J/g168 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 % IACS · Electrical Resistivity 1.7×10⁻⁶ Ω·m66.9 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 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 30 / 100 · Brazeability / Solderability 45 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 650 MJ/kg279,450 BTU/lb · Embodied Carbon (primary production) 42 kg CO₂/kg · Embodied Water 900 L/kg108 gal/lb · Typical Recycled Content 25%
Strength versus weight
Yield strength against density for every titanium grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
SP-700 AS-WELDED vs SP-700-ST — frequently asked
Is SP-700 AS-WELDED stronger than SP-700-ST?
Yes. SP-700 AS-WELDED has a typical yield strength of 870 MPa (126 ksi) against 790 MPa (115 ksi) for SP-700-ST — about 10% more. Tensile strength is 930 MPa (135 ksi) vs 900 MPa (131 ksi).
Which condition does FabDigit quote by default, AS-WELDED or ST?
Annealed is the default SP-700 condition in the FabDigit quote flow (neither AS-WELDED nor ST). 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, SP-700 AS-WELDED or SP-700-ST?
SP-700-ST, by a small margin. Both rate poor for machinability — 22/100 against 17/100 for SP-700 AS-WELDED; for welding the order is SP-700-ST first (very good, 70/100) then SP-700 AS-WELDED (good, 60/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in SP-700 AS-WELDED and SP-700-ST 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.