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AISI S21800 Details

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S21800 Application:Austenitic Chromium Nickel Manganese Stainless Steel

Category Type Grade Microstructure Designations
Grades Stainless Steels S21800 Austenite USA - AISI ,

Chemical composition(wt.%) of S21800 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.10
Si 3.50 4.50
Mn 7.00 9.00
P - 0.04
S - 0.03
Cr 16.0 18.0
Ni 8.00 9.00
N 0.08 0.18
S21800

Mechanical properties of grade S21800

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)
287 (≥) 435 (≥) 43 31 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical properties of grade S21800

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
479 (≥) 998 (≥) 33 12 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 211
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
791 899 379

S21800 - 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
S21800 AISI USA
Austenitic Chromium Nickel Manganese Stainless Steel
A 240 S21800 SAE USA
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 276 S21800 SAE USA
Stainless Steel Bars and Shapes
A 314 S21800 SAE USA
Stainless Steel Billets and Bars for Forging
A 479 S21800 SAE USA
Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
A 580 S21800 SAE USA
Stainless Steel Wire
A 959 S21800 SAE USA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
F 899 S21800 SAE USA
Standard Specification for Wrought Stainless Steels for Surgical Instruments
S21800 AISI USA
Austenitic Chromium Nickel Manganese Stainless Steel
SA-240 S21800 AMS USA
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-276 S21800 AMS USA
Specification for Stainless Steel Bars and Shapes
SA-479 S21800 AMS USA
Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels
Nitronic 60®, UNS S21800, Alloy 218 UNS USA
used in the chemical, petrochemical, pharmaceutical, machine industries (hydraulic systems) and food industry for valves, flanges, pump parts, springs, heat exchangers, screws and even chains.

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