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Nickel Alloy Inconel 600 1/4H vs Inconel 600-AW

Nickel Alloy · Inconel 600 temper comparison

Inconel 600 1/4H and Inconel 600-AW are two conditions of the same nickel alloy grade, Inconel 600: 1/4H (quarter hard) versus AW (as-welded deposit). The chemistry is identical, so every difference below comes from the condition. Inconel 600 1/4H is the stronger of the two: yield strength 520 MPa (75.4 ksi) against 380 MPa (55.1 ksi) for Inconel 600-AW, about 37% more; tensile strength follows at 750 MPa (109 ksi) vs 620 MPa (89.9 ksi). In exchange, Inconel 600-AW is the more ductile: elongation 35% versus 22% for Inconel 600 1/4H, and Inconel 600 1/4H is harder (210 HB vs 165 HB). Inconel 600-AW runs hotter in service (1,000°C vs 550°C continuous).

Inconel 600 1/4HChoose it when strength drives the design.

Inconel 600-AWChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.

Inconel 600 1/4H vs Inconel 600-AW: properties

Inconel 600 1/4HInconel 600-AW

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

214 GPa31 Msi
205 GPa29.7 Msi

Tensile Strength (Ultimate)

750 MPa109 ksi
620 MPa89.9 ksi

Yield Strength (0.2% offset)

520 MPa75.4 ksi
380 MPa55.1 ksi

Elongation at Break

22%
35%

Shear Strength

470 MPa68.2 ksi
410 MPa59.5 ksi

Fatigue Strength (Endurance Limit)

330 MPa47.9 ksi
220 MPa31.9 ksi

Charpy V-Notch Impact (RT)

150 J111 ft·lbf
120 J88.5 ft·lbf

Hardness, Brinell

210 HB
165 HB

Hardness, Rockwell B

95 HRB
85 HRB

Same in both: Shear Modulus 76 GPa11 Msi · Bulk Modulus 200 GPa29 Msi · Poisson's Ratio 0.32 · Reduction in Area 45% · Fracture Toughness (K_IC) 110 MPa·√m100 ksi·√in

Physical

Density and transition temperatures.

Same in both: Density 8.47 g/cm³0.31 lb/in³ · Melting Point (Solidus) 1,354°C2,469 °F · Liquidus Temperature 1,413°C2,575 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

14.9 W/m·K8.6 BTU/hr·ft·°F
13.5 W/m·K7.8 BTU/hr·ft·°F

Max Service Temperature (continuous)

550°C1,022 °F
1,000°C1,832 °F

Same in both: Specific Heat Capacity 444 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 13.3 µm/m·K7.4 µin/in·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Min Service Temperature -250°C-418 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

1.7 % IACS
1.6 % IACS

Electrical Resistivity

1.04×10⁻⁶ Ω·m40.9 µΩ·in
1.1×10⁻⁶ Ω·m43.3 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Same in both: Galvanic Potential (seawater, vs SCE) -0.17 V · Corrosion Resistance 74 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

33 / 100
26 / 100

Machinability Rating (AISI 1212 = 100 %)

30%
22%

Weldability

70 / 100
78 / 100

Same in both: Formability (cold) 50 / 100 · Castability 30 / 100 · Brazeability / Solderability 65 / 100 · Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Same in both: Embodied Energy (primary production) 150 MJ/kg64,488 BTU/lb · Embodied Carbon (primary production) 11.5 kg CO₂/kg · Embodied Water 320 L/kg38.3 gal/lb · Typical Recycled Content 40%

Strength versus weight

Yield strength against density for every nickel alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

2005001,0006.577.588.59Density (g/cm³)Yield strength (MPa) — log scaleInconel 600

Inconel 600 1/4H vs Inconel 600-AW — frequently asked

Is Inconel 600 1/4H stronger than Inconel 600-AW?

Yes. Inconel 600 1/4H has a typical yield strength of 520 MPa (75.4 ksi) against 380 MPa (55.1 ksi) for Inconel 600-AW — about 37% more. Tensile strength is 750 MPa (109 ksi) vs 620 MPa (89.9 ksi).

Which condition does FabDigit quote by default, 1/4H or AW?

ANN is the default Inconel 600 condition in the FabDigit quote flow (neither 1/4H nor AW). 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, Inconel 600 1/4H or Inconel 600-AW?

Inconel 600 1/4H, by a small margin. Both rate poor for machinability — 33/100 against 26/100 for Inconel 600-AW; for welding the order is Inconel 600-AW first (very good, 78/100) then Inconel 600 1/4H (very good, 70/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Inconel 600 1/4H and Inconel 600-AW 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.