Marine Pipe >> Seamless Steel Pipe >> Alloy Steel Pipe >> ASTM A335 Seamless ferritic alloy steel pipe
Product Name: ASTM A335 Seamless ferritic alloy steel pipe
Application: power generation industry , petro-chemical industry,shipbuilding high temperature pipe system.with good tensile strength,corrosion resistance and high-temperature strength.
Product NO: NPS(DN) wall thickness(OVER) wall thickness(UNDER)
inch mm inch mm inch mm
MFVE406-ASTM01 1/8 to 1-1/2 6-40 1/64 (0.015) 0.4 1/64 0.015) 0.4
MFVE406-ASTM02 1-1/2 to 4 40-100 1/32 (0.031) 0.8 1/32 (0.031) 0.8
MFVE406-ASTM03 4 to 8 100-200 1/16 (0.062) 1.6 1/32 (0.031) 0.8
MFVE406-ASTM04 8 to 12 200-300 3/32 (0.093) 2.4 1/32 (0.031) 0.8
MFVE406-ASTM05 over 12 over 300 ��1�� of the specified outside diameter
Grade P5, P9, P11, and P22
Heat Treatment Type Normalizing Temperature Range F [C] Subcritical Annealing or Tempering Temperature Range F [C]
P5 (b,c) Full or Isothermal Anneal ***** *****
Normalize and Temper 1250 [675]
Subcritical Anneal (P5c only) 1325 - 1375 [715 - 745]
P9 Full or Isothermal Anneal ***** 1250 [675]
Normalize and Temper
P11 Full or Isothermal Anneal ***** 1200 [650]
Normalize and Temper
P22 Full or Isothermal Anneal ***** 1250 [675]
Normalize and Temper
P91 Normalize and Temper 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]
Quench and Temper 1900-1975 [1040 - 1080] 1350-1470 [730 - 800]
Elogation Requirements
Calculated Minimum Elongation Values, Elongation in 2 in. or 50 mm, min %
Wall Thickness P5, P9, P11, P22 P91
in. mm Longitudinal Transverse Longitudinal
5/16 (0.312) 8 30 20 20
9/32 (0.281) 7.2 28 19 19
1/4 (0.250) 6.4 27 18 18
7/32 (0.219) 5.6 26 �� 17
3/16 (0.188) 4.8 24 16
5/32 (0.156) 4 22 15
7/8 (0.125) 3.2 21 14
3/32 (0.094) 2.4 20 13
1/18 (0.062) 1.6 18 12
Chemical Composition(�G max)
Grade/Element Carbon Manganese Phosphorous Sulfur Silicon Chromium Molybdenum
P-5 0.15 max 0.3-0.6 0.025 0.025 0.5 max 4�C6 0.45-0.65
P-9 0.15 max 0.3-0.6 0.025 0.025 0.25-1 8�C10 0.9-1.1
P-11 0.05-0.15 0.3-0.6 0.025 0.025 0.5-1 1�C1.5 0.44-0.65
P-22 0.05-0.15 0.3-0.6 0.025 0.025 0.5 max 1.9�C2.6 0.87-1.13
P-91 0.08-0.12 0.3-0.6 0.02 0.01 0.2-0.5 8�C9.5 0.85-1.05

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