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AISI S18200 Details

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S18200 Application:Ferritic Chromium Molybdenum Free-Machining Stainless Steel (18-2FM)

Category Type Grade Microstructure Designations
Grades Stainless Steels S18200 Ferrite USA - AISI ,

Chemical composition(wt.%) of S18200 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Mn - 2.50
Si - 1.00
P - 0.04
S 0.15 -
Cr 17.50 19.50
Ni - -
Mo 1.50 2.50

Ferritic Chromium Molybdenum Free-Machining Stainless Steel (18-2FM)

Mechanical properties of grade S18200

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)
746 (≥) 823 (≥) 43 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical properties of grade S18200

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
665 (≥) 498 (≥) 22 12 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 333
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
251 283 697

S18200 - 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 581 S18200 SAE USA
Free-Machining Stainless Steel Wire and Wire Rods
A 582 S18200 SAE USA
Standard Specification for Free-Machining Stainless Steel Bars
S18200 AISI USA
Ferritic Chromium Molybdenum Free-Machining Stainless Steel (18-2FM)
A 581 S18200 SAE USA
Free-Machining Stainless Steel Wire and Wire Rods
A 582 S18200 SAE USA
Standard Specification for Free-Machining Stainless Steel Bars
S18200 AISI USA
Ferritic Chromium Molybdenum Free-Machining Stainless Steel (18-2FM)

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