Stainless Steel 1.4980 CW+A vs 1.4980-STA
Stainless Steel · 1.4980 temper comparison
1.4980 CW+A and 1.4980-STA are two conditions of the same stainless steel grade, 1.4980: CW+A (cold worked then aged) versus STA (solution treated and aged). The chemistry is identical, so every difference below comes from the condition. 1.4980 CW+A is the stronger of the two: yield strength 1,000 MPa (145 ksi) against 700 MPa (102 ksi) for 1.4980-STA, about 43% more; tensile strength follows at 1,240 MPa (180 ksi) vs 1,000 MPa (145 ksi). In exchange, 1.4980-STA is the more ductile: elongation 25% versus 12% for 1.4980 CW+A, and 1.4980 CW+A is harder (360 HB vs 300 HB). 1.4980-STA runs hotter in service (700°C vs 600°C continuous).
1.4980 CW+AChoose it when strength drives the design.
1.4980-STAChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
1.4980 CW+A vs 1.4980-STA: 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, Brinell
Hardness, Rockwell C
Same in both: Elastic (Young's) Modulus 201 GPa29.2 Msi · Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 176 GPa25.5 Msi · Poisson's Ratio 0.31 · Compressive Strength 730 MPa106 ksi · Shear Strength 620 MPa89.9 ksi · Fracture Toughness (K_IC) 110 MPa·√m100 ksi·√in · Hardness, Vickers 315 HV
Physical
Density and transition temperatures.
Same in both: Density 7.92 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,370°C2,498 °F · Liquidus Temperature 1,430°C2,606 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 12.6 W/m·K7.3 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16.4 µm/m·K9.1 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -253°C-423 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 1.9 % IACS · Electrical Resistivity 9.1×10⁻⁷ Ω·m35.8 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V · Corrosion Resistance 60 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 16% · Weldability 45 / 100 · Brazeability / Solderability 55 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 80 MJ/kg34,394 BTU/lb · Embodied Carbon (primary production) 5.8 kg CO₂/kg · Embodied Water 120 L/kg14.4 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.
1.4980 CW+A vs 1.4980-STA — frequently asked
Is 1.4980 CW+A stronger than 1.4980-STA?
Yes. 1.4980 CW+A has a typical yield strength of 1,000 MPa (145 ksi) against 700 MPa (102 ksi) for 1.4980-STA — about 43% more. Tensile strength is 1,240 MPa (180 ksi) vs 1,000 MPa (145 ksi).
Which condition does FabDigit quote by default, CW+A or STA?
STA is the default 1.4980 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, 1.4980 CW+A or 1.4980-STA?
1.4980-STA, by a small margin. Both rate poor for machinability — 20/100 against 15/100 for 1.4980 CW+A.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4980 CW+A and 1.4980-STA 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.