Grades | Stainless Steels | SUH 661

JIS SUH 661 ( Austenite )

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SUH 661 Application:Heat-resisting steel bars and wire rods

Chemical composition(mass fraction)(wt.%) of the SUH 661
Elements Min.(≥) Max.(≤) Similar Remarks
C 0.08 0.16
Si - 1.00
Mn 1.00 2.00
P - 0.04
S - 0.03
Cr 20.00 22.50
Ni 19.00 21.00
Mo 2.50 3.50
W 2.00 3.00
Co 18.50 21.00
Nb 0.75 1.25
N 0.10 0.20

Mechanical properties of grade SUH 661

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition HBW
188 (≥) 274 (≥) 13 41 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical properties of grade SUH 661

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
484 (≥) 744 (≥) 23 42 24 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
- - -
114 683 165 - - -

SUH 661 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