UNS Nitronic 60®, UNS S21800, Alloy 218

Grades | Stainless Steels | Nitronic 60®, UNS S21800, Alloy 218

UNS Nitronic 60®, UNS S21800, Alloy 218 ( Austenite )

PDF | Word | Print

Nitronic 60®, UNS S21800, Alloy 218 Application: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.

Chemical composition(mass fraction)(wt.%) of the Nitronic 60®, UNS S21800, Alloy 218
Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.10
Mn 7.00 9.00
Si 3.50 4.50
P - 0.04
S - 0.03
Cr 16.00 18.00
Ni 8.00 9.00
Mo - -
N 0.08 0.18

Mechanical properties of grade Nitronic 60®, UNS S21800, Alloy 218

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
921 (≥) 142 (≥) 43 44 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical properties of grade Nitronic 60®, UNS S21800, Alloy 218

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
358 (≥) 357 (≥) 24 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2		 - - -
274 994 537 - - -

Nitronic 60®, UNS S21800, Alloy 218 Range of products
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