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SAE F 880 Class A1-50 18-9LW Details

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F 880 Class A1-50 18-9LW Application:Standard Specification for Stainless Steel Socket Set Screws (Metric)

Category Type Grade Microstructure Designations
Grades Stainless Steels F 880 Class A1-50 18-9LW Precipitation-Hardening USA - SAE , F 880M (2002) - Standard Specification for Stainless Steel Socket Set Screws (Metric)

Chemical composition(wt.%) of F 880 Class A1-50 18-9LW grade: F 880M (2002)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.10
Si - 0.65
Mn - -
P - -
S - -
Ni 8.00 10.00
Cr 17.00 19.00
Al - -
Cu 3.00 4.00
Ti - -
Fe - -
V - -
Mo - -
Standard Specification for Stainless Steel Socket Set Screws (Metric)

Mechanical properties of grade F 880 Class A1-50 18-9LW F 880M (2002)

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)
734 (≥) 868 (≥) 13 23 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical properties of grade F 880 Class A1-50 18-9LW F 880M (2002)

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
753 (≥) 674 (≥) 44 41 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 232
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
633 971 794

F 880 Class A1-50 18-9LW - 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
F 593 18-9LW SAE USA
Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs
F 594 18-9LW SAE USA
Standard Specification for Stainless Steel Nuts
F 880 Class A1-50 18-9LW SAE USA
Standard Specification for Stainless Steel Socket Set Screws (Metric)
F 880 Class A1-70 18-9LW SAE USA
Standard Specification for Stainless Steel Socket Set Screws (Metric)

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