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Description

USA AMS SFA-5.9/SFA-5.9M , ER 308 Specialsteel This filler metal is the most often used to weld similar composition, in particular, Type 304. and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: ER 308
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel ER 308 Austenite AMS USA This filler metal is the most often used to weld similar composition, in particular, Type 304.

Chemical composition(mass fraction)(wt.%) of the ER 308

C Si Mn P S Cr Ni Cu Mo
≤0.08 0.25 -0.60 1.00 -2.50 ≤0.03 ≤0.03 19.5 -22.0 9.00 -11.0 ≤0.75 ≤0.75

Mechanical Properties of steel grade ER 308

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
846 (≥) 483 (≥) 23 33 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade ER 308

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
34 - -     0.33 -  
493 275 - 33.3 231   -  
343 - 14 32.2   432 143

Heat Treatment of steel grade ER 308

Heat treated : 1985°C - 1622°C

Technological Curves of steel grade ER 308

Cross Reference Table (Equivalent Grade) of ER 308

Relevant standard of ER 308

SFA-5.9/SFA-5.9M Bare Stainless Steel Welding Electrodes and Rods SFA-5-9-SFA-5-9M-.pdf

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