Stainless Steel 1.6982-A vs 1.6982-QT1
Stainless Steel · 1.6982 temper comparison
1.6982-A and 1.6982-QT1 are two conditions of the same stainless steel grade, 1.6982: A (solution annealed) versus QT1 (austenitised ~1000–1050 °C, air/oil quenched, tempered 600–620 °C). The chemistry is identical, so every difference below comes from the condition. 1.6982-QT1 is the stronger of the two: yield strength 640 MPa (92.8 ksi) against 520 MPa (75.4 ksi) for 1.6982-A, about 23% more; tensile strength follows at 830 MPa (120 ksi) vs 720 MPa (104 ksi). In exchange, 1.6982-A is the more ductile: elongation 22% versus 19% for 1.6982-QT1, and 1.6982-QT1 is harder (250 HB vs 210 HB).
1.6982-AChoose it when the part is bent, formed or impact-loaded.
1.6982-QT1Choose it when strength drives the design.
1.6982-A vs 1.6982-QT1: 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
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 0.3 · Compressive Strength 650 MPa94.3 ksi · Shear Strength 500 MPa72.5 ksi · Fracture Toughness (K_IC) 130 MPa·√m118 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 7.75 g/cm³0.28 lb/in³ · Melting Point (Solidus) 1,450°C2,642 °F · Liquidus Temperature 1,510°C2,750 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 25 W/m·K14.4 BTU/hr·ft·°F · Specific Heat Capacity 460 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 10.5 µm/m·K5.8 µin/in·°F · Latent Heat of Fusion 260 J/g112 BTU/lb · Max Service Temperature (continuous) 450°C842 °F · Min Service Temperature -100°C-148 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.9 % IACS · Electrical Resistivity 6×10⁻⁷ Ω·m23.6 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.3 V · Corrosion Resistance 55 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Same in both: Formability (cold) 15 / 100 · Castability 68 / 100 · Brazeability / Solderability 40 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 36 MJ/kg15,477 BTU/lb · Embodied Carbon (primary production) 2.8 kg CO₂/kg · Embodied Water 60 L/kg7.2 gal/lb · Typical Recycled Content 70%
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.
1.6982-A vs 1.6982-QT1 — frequently asked
Is 1.6982-QT1 stronger than 1.6982-A?
Yes. 1.6982-QT1 has a typical yield strength of 640 MPa (92.8 ksi) against 520 MPa (75.4 ksi) for 1.6982-A — about 23% more. Tensile strength is 830 MPa (120 ksi) vs 720 MPa (104 ksi).
Which condition does FabDigit quote by default, A or QT1?
QT1 is the default 1.6982 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, 1.6982-A or 1.6982-QT1?
1.6982-A, by a small margin. Both rate fair for machinability — 50/100 against 42/100 for 1.6982-QT1; for welding the order is 1.6982-A first (very good, 75/100) then 1.6982-QT1 (very good, 70/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.6982-A and 1.6982-QT1 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.