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SAE A 988 S41026 Details

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A 988 S41026 Application:Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service

Category Type Grade Microstructure Designations
Grades Stainless Steels A 988 S41026 Martensite USA - SAE , A 988/A 988M (2011) - Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service

Chemical composition(wt.%) of A 988 S41026 grade: A 988/A 988M (2011)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Mn - 1.00
Si - 1.00
P - 0.02
S - 0.02
Cr 11.50 13.50
Ni 1.00 2.00
Mo 0.40 0.60
Cu - 0.50

Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service

Mechanical properties of grade A 988 S41026 A 988/A 988M (2011)

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)
875 (≥) 695 (≥) 12 34 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical properties of grade A 988 S41026 A 988/A 988M (2011)

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
751 (≥) 698 (≥) 21 23 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 143
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
563 432 286

A 988 S41026 - 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 959 S41026 SAE USA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
A 988 S41026 SAE USA
Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service
S41026 AISI USA
Martensitic Chromium Stainless Steel with Molybdenum

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