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AMS ER 409Cb Details

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ER 409Cb Application:Bare Stainless Steel Welding Electrodes and Rods

Category Type Grade Microstructure Designations
Grades Stainless Steels ER 409Cb Precipitation-Hardening USA - AMS , SFA-5.9/SFA-5.9M - Bare Stainless Steel Welding Electrodes and Rods

Chemical composition(wt.%) of ER 409Cb grade: SFA-5.9/SFA-5.9M

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.06
Si - 1.00
Mn - 1.00
P - 0.045
S - 0.04
Ni - 0.50
Cr 10.50 11.75
Al - -
Cu - -
Ti - -
Fe - remaining
N - -
Mo - -
V - -
Bare Stainless Steel Welding Electrodes and Rods

Mechanical properties of grade ER 409Cb SFA-5.9/SFA-5.9M

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)
213 (≥) 749 (≥) 34 22 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical properties of grade ER 409Cb SFA-5.9/SFA-5.9M

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
283 (≥) 728 (≥) 44 24 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 142
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
218 217 858

ER 409Cb - 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 Type 409Cb SAE USA
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
ER 409Cb AMS USA
Bare Stainless Steel Welding Electrodes and Rods
ER 409Cb AMS USA
Bare Stainless Steel Welding Electrodes and Rods

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