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S41800 Application:Martensitic special steel
Category Type Steel grade Standard Country
Grades Special Alloy S41800 UNS USA

Chemical composition % of the ladle analysis of grade S41800

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) W(%)
0.15-0.20 0.5 0.5 Max 0.04 Max 0.03 Max 0.03 1.8-2.2 2.5-3.5
S41800
Mechanical properties of grade S41800
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)
173 (≥) 231 (≥) 12 31 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 123
Physical properties of grade S41800
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
156 (≥) 321 (≥) 22 43 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 341
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
331 345 129
S41800 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
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
A 565 S41800 UNS USA
Martensitic Stainless Steel Bars for High-Temperature Service
S41800 UNS USA
Martensitic Chromium Wolfram Nickel Stainless and Heat Resisting Steel
A 565 S41800 UNS USA
Martensitic Stainless Steel Bars for High-Temperature Service
S41800 UNS USA
Martensitic Chromium Wolfram Nickel Stainless and Heat Resisting Steel
A 565 S41800 UNS USA
Martensitic Stainless Steel Bars for High-Temperature Service
S41800 UNS USA
Martensitic Chromium Wolfram Nickel Stainless and Heat Resisting Steel

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