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Chemical composition % of the ladle analysis of grade Type418(GreekAscollOy)

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
Type418(GreekAscollOy)
Mechanical properties of grade Type418(GreekAscollOy)
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)
377 (≥) 225 (≥) 21 13 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 412
Physical properties of grade Type418(GreekAscollOy)
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
563 (≥) 922 (≥) 34 21 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 334
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
911 386 862
Type418(GreekAscollOy) 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
Martensitic Stainless Steel Bars for High-Temperature Service
S41800
Martensitic Chromium Wolfram Nickel Stainless and Heat Resisting Steel
A 240 S44627
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 268 S44627
Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
A 276 S44627
Stainless Steel Bars and Shapes
S44627
Ferritic Chromium Molybdenum Columbium Stainless Steel
SA-240 S44627
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-268 S44627
Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
A 581 S20300
Free-Machining Stainless Steel Wire and Wire Rods
A 582 S20300
Standard Specification for Free-Machining Stainless Steel Bars
F 837 Class A1-50 S20300
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F 837 Class A1-55 S20300
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F 837 Class A1-70 S20300
Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)
F738 Class A1-50 S20300
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F738 Class A1-70 S20300
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F738 Class A1-80 S20300
Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs
F836 Class A1-50 S20300
Standard Specification for Style 1 Stainless Steel Metric Nuts (Metric)
F836 Class A1-70 S20300
Standard Specification for Style 1 Stainless Steel Metric Nuts (Metric)
F836 Class A1-80 S20300
Standard Specification for Style 1 Stainless Steel Metric Nuts (Metric)
S20300
Austenitic Chromium Manganese Nickel Copper Free Machining Stainless Steel

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