High quality special steel supplier.Old rev.
  • Certified Company

    DNV&ABS
  • Certified Company

    ISO 9001:2008
  • R&D Production

    In China

ER 308


ER 308 material is AMS SFA-5.9/SFA-5.9M Bare Stainless Steel Welding Electrodes and Rods This filler metal is the most often used to weld similar composition, in particular, Type 304. .

Chemical composition of ER 308, ER 308 mechanical properties, ER 308 datasheet, ER 308 equivalent grade, Heat treatment and temperature process of ER 308.


ER 308 property sheet

ER 308 Spec.

AMS SFA-5.9/SFA-5.9M
Bare Stainless Steel Welding Electrodes and Rods

Chemical Composition of ER 308

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

Mechanical Properties of ER 308

Rp0.2 (MPa) 246 (≥)
Rm (MPa) 384 (≥)
AKV (J) 31
A (%) 32
Z (%) 12
Hardness HBW 412

ER 308 shape and dimensions

ER 308 Round bar: 1mm-800mm
ER 308 Square bar: 10mm * 10mm-600mm *600mm
ER 308 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
ER 308 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
ER 308 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
ER 308 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes