ASTM A423Gr1, A423Gr2, A423Gr3 Seamless Pipe, Electric- Welded ERW Pipe- SCALE STEEL.

ASTM A423/ A423M standard contains three grades which are Grade 1, Grade 2, Grade 3, determines minimum-wall-thickness, seamless and electric- resistance [SCALE STEEL]welded, low-alloy steel tubes for pressure containing parts such as economizers or other applications where corrosion resistance is important.
 
Seamless or Welded Pipes/ Tubes’ sizes and thicknesses under standard of ASTM A423/ A423M are 12.7 to 127mm( outside diameter) and 0.9 to 12.7mm( thickness). When seamless type, the producing process would be hot finished or cold finished. [SCALE STEEL]Heat treatment would be Normalized or other relevant heat treatments necessary to conform purchasing requirements.
 
Chemical Composition of A423 Grade 1, A423 Grade 2, A423 Grade 3(%):
A423Gr1:
C: 0.15
Mn: 0.55 max
P: 0.06-0.16
S: 0.060
Si: 0.10 min
Cu: 0.20-0.60
Cr: 0.24-1.31
Ni: 0.20-0.70[SCALE STEEL]
Mo: -
Sb: -
 
A423Gr2:
C: 0.15
Mn: 0.50-1.00
P: 0.04 max
S: 0.05
Si: -
Cu: 0.30-1.00
Cr: -
Ni: 0.40-1.10
Mo: - 0.10 min
Sb: -
 
A423Gr3:
C: 0.06
Mn: 0.70-1.40
P: 0.020 max
S: 0.020
Si: 0.55 max
Cu: 0.25-0.45[SCALE STEEL]
Cr: -
Ni: 0.50 max
Mo: 0.20 max
Sb: 0.05-0.15
 
Mechanical Properties:
 
A423Gr1, A423Gr2:
Tensile Strength(MPa): 415 min
Yield Strength(MPa): 255 min
Elongation(%): 25 min
 
A423Gr3:
Tensile Strength(MPa): 380
Yield Strength(MPa): 230
Elongation(%) : 35
 
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