ASTM A234 WPB-WX REDUCER Alloy Steel
ASTM A234 is the standard specification for steel pipe fittings suitable for use in medium and high temperature environments, including carbon steel and alloy steel materials. Carbon steel ASTM A234 fittings are used for medium and high temperature pressure piping. Pipe fitting materials in this standard include killed steel, forgings, rods, plates, and seamless or fusion welded pipes with filler metal added. These fitting materials include killed steel, forgings, rods, plates, and seamless (fusion welded) tubing products with added filler metal.
ASTM A234 is the standard specification for steel pipe fittings, including carbon and alloy steel materials suitable for medium and high temperature environments. It covers seamless and welded types of steel fittings. Steel pipe fittings are used in pressure pipe and pressure vessel manufacturing. These fitting materials include killed steel, forgings, rods, plates, seamless or HFW (fusion welded) tubing products with added filler metal.
ASTM A234 includes the latest revisions of ASTM B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, and forged carbon steels and alloys of seamless and welded construction covered by MSS accessories Steel - SP-97. ETC.
ASTM A234 steel pipe fittings are known for use in the manufacture of pressure pipes and pressure vessels used in medium to high temperature conditions. Pipe fitting materials in this standard include killed steel, forgings, bars, plates, and seamless or fusion welded pipes filled with metal.
The standard covers specifications for elbows, tees, reducers, caps and crosses, usually with butt-weld ends.
ASTM A234 WPB Chemical Composition
Chemical Composition (%) of ASTM A234
| Grade |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
Ni |
Cu |
V |
Nb |
| WPB |
0.3 |
0.29-1.06 |
0.05 |
0.058 |
0.1min |
0.4 |
0.15 |
0.4 |
0.4 |
0.08 |
0.02 |
| WPC |
0.35 |
0.29-1.06 |
0.05 |
0.058 |
0.1min |
0.4 |
0.15 |
0.4 |
0.4 |
0.08 |
0.02 |
| WP11 CL1 |
0.05-0.15 |
0.30-0.60 |
0.03 |
0.03 |
0.50-1.00 |
1.00-1.50 |
0.44-0.65 |
- |
- |
- |
- |
| WP11 CL2/3 |
0.05-0.20 |
0.30-0.80 |
0.04 |
0.04 |
0.50-1.00 |
1.00-1.50 |
0.44-0.65 |
- |
- |
- |
- |
ASTM A234 WPB Mechanical Propertie
| 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] |
Heat Treatment of ASTM A234 WPB
After ASTM A234 WPB pipe fittings are formed at high temperature, they are cooled to a temperature below the critical range under appropriate conditions to prevent harmful defects caused by too rapid cooling. ASTM A234 WPB specifies heat treatment temperatures for metal (part) temperatures.
