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Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.

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ASTM A105 Steel Grade Material

According to ASTM standard,A105 is the material of carbon steel forgings for piping applications.It is the most widely used carbon steel material in ASME and ANSI standard piping products.(What is A105 steel flange?)

ASTM A105 Raw Material For Steel Flanges

ASTM A105 Raw Material For Steel Flanges

Chemical composition of ASTM A105 steel:

Element Composition,%
Carbon, max 0.35
Manganese 0.60-1.05
Phosphorus, max 0.035
Sulphur, max 0.04
Silicon 0.10-0.35
Copper, max 0.4
Nickel, max 0.4
Chromium, max 0.3
Molybdenum, max 0.12
Vanadium, max 0.08

Mechanical properties of ASTM A105:

Tensile Strength, min: 70,000 psi (485 MPa)
Min. Yield Point: 36,000 psi (250 MPa)
Reduction of area, min: 30% min
Hardness, HB, max 187

Heat Treatment of ASTM A105 steel:

When required,the ASTM A105 material can do the heat treatment accordingly,such as annealing,normalizing or normalizing and tempering or quenching and tempering.It will bring different mechanical properties to the steel.

In Hebei Haihao Group,ASTM A105 is used a lot to produce the carbon steel forged flanges,socket welding pipe fittings,threaded pipe fittings,outlets and forged pipe nozzles which are widely used in piping system.

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