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UNS 2618 Details

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2618 Application:Aluminum Alloy, Die and Hand Forgings, Rolled Rings, and Forging Stock 2.3Cu - 1.6Mg - 1.1Fe - 1.0Ni - 0.18Si - 0.07Ti (2618-T61) Solution and Precipitation Heat Treated

Category Type Grade Microstructure Designations
Grades Stainless Steels 2618 Precipitation-Hardening USA - UNS , SAE AMS A 22771C (2012) - Aluminum Alloy Forgings, Heat Treated
SAE AMS 4132F (2008) - Aluminum Alloy, Die and Hand Forgings, Rolled Rings, and Forging Stock 2.3Cu - 1.6Mg - 1.1Fe - 1.0Ni - 0.18Si - 0.07Ti (2618-T61) Solution and Precipitation Heat Treated
SAE AMS QQ A 367D (2012) - Aluminum alloy forgings

Chemical composition(wt.%) of 2618 grade: SAE AMS A 22771C (2012)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.06
Si - 0.75
Mn - 0.75
P - -
S - -
Ni - 0.50
Cr 25.00 27.00
Al - -
Cu - 0.20
Ti - -
Fe - -
N - 0.04
Mo 0.75 1.50
Aluminum Alloy, Die and Hand Forgings, Rolled Rings, and Forging Stock 2.3Cu - 1.6Mg - 1.1Fe - 1.0Ni - 0.18Si - 0.07Ti (2618-T61) Solution and Precipitation Heat Treated

Mechanical properties of grade 2618 SAE AMS A 22771C (2012)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
223 (≥) 124 (≥) 31 41 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical properties of grade 2618 SAE AMS A 22771C (2012)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
151 (≥) 411 (≥) 44 23 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 213
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
613 348 924

2618 - Form of Supply

Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
A 240 S44627 SAE USA
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 268 S44627 SAE USA
Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
A 276 S44627 SAE USA
Stainless Steel Bars and Shapes
S44627 AISI USA
Ferritic Chromium Molybdenum Columbium Stainless Steel
SA-240 S44627 AMS USA
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-268 S44627 AMS USA
Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
2618 ASTM USA
Aluminum Alloy, Die and Hand Forgings, Rolled Rings, and Forging Stock 2.3Cu - 1.6Mg - 1.1Fe - 1.0Ni - 0.18Si - 0.07Ti (2618-T61) Solution and Precipitation Heat Treated
2618 ASTM USA
Aluminum alloy forgings
2618 ASTM USA
Aluminum Alloy Forgings, Heat Treated
2618 UNS USA
Aluminum Alloy Forgings, Heat Treated
2618 UNS USA
Aluminum Alloy, Die and Hand Forgings, Rolled Rings, and Forging Stock 2.3Cu - 1.6Mg - 1.1Fe - 1.0Ni - 0.18Si - 0.07Ti (2618-T61) Solution and Precipitation Heat Treated
2618 UNS USA
Aluminum alloy forgings
9261 YB USA
Former SAE Standard and Former SAE Ex-Steels
9261 UNS USA
Former SAE standard and former SAE Ex-steels
A 213 S32615 SAE USA
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
A 322 6118 SAE USA
Steel Bars, Alloy, Standard Grades
A 322 6150 SAE USA
Steel Bars, Alloy, Standard Grades
A 322 61L18 SAE USA
Steel Bars, Alloy, Standard Grades
A 322 61L50 SAE USA
Steel Bars, Alloy, Standard Grades
A 400 9261 SAE USA
Standard Practice for Steel Bars, Selection Guide, Composition, and Mechanical Properties

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