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AMS SA-789 S31200 Details

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SA-789 S31200 Application:Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Tubing for General Service

Category Type Grade Microstructure Designations
Grades Stainless Steels SA-789 S31200 Austenitic-Ferritic(Duplex steel) USA - AMS , SA-789/SA-789M - Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Tubing for General Service

Chemical composition(wt.%) of SA-789 S31200 grade: SA-789/SA-789M

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.03
Mn - 2.00
Si - 1.00
P - 0.045
S - 0.03
Cr 24.00 26.00
Ni 5.50 6.50
Mo 1.20 2.00
N 0.14 0.20
Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Tubing for General Service

Mechanical properties of grade SA-789 S31200 SA-789/SA-789M

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)
571 (≥) 664 (≥) 24 11 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical properties of grade SA-789 S31200 SA-789/SA-789M

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
827 (≥) 722 (≥) 23 11 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 442
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
164 469 142

SA-789 S31200 - 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 1049 S31200 SAE USA
Stainless Steel Forgings, Ferritic/Austenitic (Duplex), for Pressure Vessels and Related Components
A 240 S31200 SAE USA
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 789 S31200 SAE USA
Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
A 790 S31200 SAE USA
Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe
A 928 S31200 SAE USA
Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal
A 949 S31200 SAE USA
Spray-Formed Seamless Ferritic/Austenitic Stainless Steel Pipe
A 959 S31200 SAE USA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
S31200 AISI USA
Ferritic-Austenitic Chromium Nickel Molybdenum Nitrogen Stainless Steel
SA-240 S31200 AMS USA
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-789 S31200 AMS USA
Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Tubing for General Service
SA-790 S31200 AMS USA
Specification for Seamless and Welded Ferritic /Austenitic Stainless Steel Pipe

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