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SAE F 837 Class A1-55 S30403 Details

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F 837 Class A1-55 S30403 Application:Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Category Type Grade Microstructure Designations
Grades Stainless Steels F 837 Class A1-55 S30403 Austenite USA - SAE , F 837M (2002) - Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Chemical composition(wt.%) of F 837 Class A1-55 S30403 grade: F 837M (2002)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.03
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 18.0 20.0
Ni 8.00 12.0
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Mechanical properties of grade F 837 Class A1-55 S30403 F 837M (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)
519 (≥) 572 (≥) 41 11 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical properties of grade F 837 Class A1-55 S30403 F 837M (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
193 (≥) 115 (≥) 34 11 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 122
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
572 199 396

F 837 Class A1-55 S30403 - 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 S30403 SAE USA
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 249 S30403 SAE USA
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
A 269 S30403 SAE USA
Seamless and Welded Austenitic Stainless Steel Tubing for General Service
A 270 S30403 SAE USA
Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
A 276 S30403 SAE USA
Stainless Steel Bars and Shapes
A 314 S30403 SAE USA
Stainless Steel Billets and Bars for Forging
A 358 S30403 SAE USA
Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications
A 409 S30403 SAE USA
Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service
A 473 S30403 SAE USA
Stainless Steel Forgings
A 478 S30403 SAE USA
Chromium-Nickel Stainless Steel Weaving and Knitting Wire
A 493 S30403 SAE USA
Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging
A 580 S30403 SAE USA
Stainless Steel Wire
A 632 S30403 SAE USA
Seamless and Welded Austenitic Stainless Steel Tubing (Small-Diameter) for General Service
A 666 S30403 SAE USA
Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
A 688 S30403 SAE USA
Welded Austenitic Stainless Steel Feedwater Heater Tubes
A 778 S30403 SAE USA
Welded, Unannealed Austenitic Stainless Steel Tubular Products
A 813 S30403 SAE USA
Single- or Double-Welded Austenitic Stainless Steel Pipe
A 814 S30403 SAE USA
Cold-Worked Welded Austenitic Stainless Steel Pipe
A 965 S30403 SAE USA
Steel Forgings, Austenitic, for Pressure and High Temperature Parts
A 988 S30403 SAE USA
Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service

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