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Here You Get ASTM-astm a234 WPB pdf

ASTM a234 WPB steel Pipe Bends Standard Specification


ASTM a234 WPB steel Pipe Bends is Standard Specification for steel pipe fittings includes carbon and alloy steel material for moderate and high-temperature services.
Forging is the manufacturing process of ASTM A234 WPB pipe fittings.
  • W = WELDABLE / wrought
  • P = RELATED TOP NUMBER OF ALLOY MATERIAL
  • B = REFER TO MINIMUM YIELD OF MATERIAL

Chemical Composition (%) of ASTM A234 WPB

WP9 CL1, WP9 CL3 WP91
Carbon 0.15 0.15 0.08–0.12
      Manganese 0.30–0.60 0.30–0.60 0.30–0.60
     Phosporus 0.03 0.03 0.02
Sulfur 0.03 0.03 0.01
Silicon 1 1 0.20–0.50
      Chromium 8.0–10.0 8.0–10.0 8.0–9.5
     Molybdenum 0.90–1.10 0.90–1.10 0.85–1.05
Nickel 0.4
Copper
Others Vanadium 0.18–0.25
Columbium 0.06-0.10
Nitrogen 0.03-0.07
Aluminum 0.02F
Titanium 0.01F
Zirconium 0.01F
WPB B,C,D,E, WPC C,D,E, WP11 CL1 WP11 CL2, WP11 CL3 WP22 CL1, WP22 CL3 WP5 CL1, WP5 CL3
Carbon 0.3 0.35 0.05–0.15 0.05–0.20 0.05–0.20 0.05–0.15 0.05–0.15 0.15 0.15
Manganese 0.29–1.06 0.29–1.06 0.30–0.60 0.30–0.80 0.30–0.80 0.30–0.60 0.30–0.60 0.30–0.60 0.30–0.60
Phosporus 0.05 0.05 0.03 0.04 0.04 0.04 0.04 0.04 0.04
Sulfur 0.058 0.058 0.03 0.04 0.04 0.04 0.04 0.03 0.03
Silicon 0.10 min 0.10 min 0.50–1.00 0.50–1.00 0.50–1.00 0.5 0.5 0.5 0.5
Chromium 0.4 0.4 1.00–1.50 1.00–1.50 1.00–1.50 1.90–2.60 1.90–2.60 4.0–6.0 4.0–6.0
Molybdenum 0.15 max 0.15 max 0.44–0.65 0.44–0.65 0.44–0.65 0.87–1.13 0.87–1.13 0.44–0.65 0.44–0.65
Nickel 0.4 0.4
Copper 0.4 0.4
Others Vanadium 0.08 Vanadium 0.08
Notes:

For each reduction of 0.01% below the desired C most, a rise of 0.06% Mn on top of the desired most is permissible, up to the most of one.35%.
The add of atomic number 29, Ni, Cr, and Mo shall not exceed 1.00%.
The add of chromium and Mo shall not exceed 0.32%.
The maximum carbon equivalent (C.E.), supported heat analysis and also the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

Mechanical properties of ASTM A234 WPB

                         ASTM A234 WPB



Tensile Requirements WPB WPC, WP11CL2 WP11CL1  WP11CL3
Tensile Strength, min, ksi[MPa] 60-85 70-95 60-85  75-100
(0.2% offset or 0.5% extension-under-load) [415-585] [485-655] [415-585]  [520-690]
Yield Strength, min, ksi[MPa] 32 40 30 45
[240] [275] [205] [310]
Where the wall thickness lies between 2 values on top of, the min elongation price is decided by the subsequent equations:

Longitudinal E=48t+15.00
Transverse E=32t+10.00
E = elongation in 2in [50mm], %
t = actual thickness of specimen, in [mm]

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