ASTM A335 Seamless Alloy Steel Pipes

is a ASTM standard specifies Seamless Ferritic Pipe for High-Temperature Service. ordered to this specification shall be suitable for bending and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.

Steel Grade:

STM A335 GR P5 | GR P9 | GR P11 | GR P22 | GR P91 | GR P92.

Mechanical Properties:

Standard Steel Grade TS (Mpa) Ys (Mpa) E (%) Hardness
ASTM A335 SA335 P11  ≥ 415  ≥ 205 ≥ 22 ≤ 163 HB
ASTM A335 SA335 P12  ≥ 415  ≥ 220 ≥ 22 ≤ 163 HB
ASTM A335 SA335 P22  ≥ 415  ≥ 205 ≥ 22 ≤ 163 HB
ASTM A335 SA335 P5  ≥ 415  ≥ 205 ≥ 22 ≤ 187 HB
ASTM A335 SA335 P91 585-760  ≥415 ≥ 20 ≤ 250 HB
ASTM A335 SA335 P92  ≥ 620  ≥ 440 ≥ 20 ≤ 250 HB

Grade and Chemical composition:

Grade  C Mn P,S Max Si Cr Mo
P11 0.05-0.15 0.30-0.60 0.025 0.50-1.00 1.00-1.50 0.44-0.65
P22 0.05-0.15 0.30-0.60 0.025 0.5 max 1.9-2.60 0.87-1.13
P5 0.15 max 0.30-0.60 0.025 0.5 max 4.00-6.00 0.45-0.65
P9 0.15 max 0.30-0.60 0.025 0.25-1.00 8.00-10.00 0.90-1.10
P91 0.08-0.12 0.30-0.60 0.020/0.010 0.20-0.50 8.00-9.50 0.85-1.05
  V:0.18-0.25 N:0.03-0.07 Ni:0.040 max Al:0.02 max Nb:0.060-0.10 Ti:0.01 max
P92 0.07-0.13 0.30-0.60 0.020/0.010 0.50 max 8.50-9.50 0.30-0.60
  v:0.15-0.25 N:0.03-0.07 Ni:0.40 max Al:0.02 max Nb:0.04-0.09 W:1.50-2.00
B:0.001-0.006 Ti:0.01 max Zr:0.01 max

Size:

  • Hot-rolled:    OD:51-508 mm; WT: 7-60 mm; L: Max 16000 mm
  • Cold-Drawn: OD: 10-50 mm; WT: 2-10 mm; L: Max 16000 mm

Specifications in accordance with customer requirements.

Packing:

Beveled/black painting/plastic caps/in bundles/steel strips/wooden box/

accordance with customer requirements.

Surface treatment:

  • Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting, Epoxy & Fbe Coating
  • Painting as requested
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