ASTM A106 Grade A material specification properties
ASTM A106 Grade A introduction
ASTM A106 is the standard for carbon steel seamless pipes established by the American Society for Testing and Materials. This standard specifies the chemical composition, mechanical properties, heat treatment requirements, inspection methods, etc. of carbon steel seamless pipes used for high-temperature services. ASTM A106 Grade A seamless pipe is divided into two grades: A and B. Grade A is equivalent to domestic 10# steel, and grade B is equivalent to domestic 20# steel. Grade A steel has lower strength but better plasticity and toughness; Grade B steel has higher strength but lower plasticity and toughness.
The common specifications of ASTM A106 Grade A seamless pipe are:
- Outer diameter: 1/8 inch to 24 inches
- Wall Thickness: 0.065" to 2.0"
- Length: 10 feet to 40 feet
ASTM A106 Grade A seamless pipes are widely used in petroleum, chemical industry, boilers, power stations, ships, machinery manufacturing, automobiles, aviation, aerospace, energy, geology, construction and military industries.
ASTM A106 Grade A General properties
The General properties requirements of ASTM A106 Grade A are as follows:
| Property | Temperature | Value |
|---|---|---|
| Elongation A50 | 23.0 °C | Elongation A50 of 25 - 35 % |
| Tensile strength | 23.0 °C | Tensile strength of 330 MPa |
| Yield strength | 23.0 °C | Yield strength of 205 MPa |
ASTM A106 Grade A Chemical composition
The Chemical composition requirements of ASTM A106 Grade A are as follows:
| Property | Value |
|---|---|
| Carbon | Carbon of 0.25 % |
| Chromium | Chromium of 0.4 % |
| Copper | Copper of 0.4 % |
| Manganese | Manganese of 0.27 - 0.93 % |
| Molybdenum | Molybdenum of 0.15 % |
| Nickel | Nickel of 0.4 % |
| Phosphorus | Phosphorus of 0.04 % |
| Silicon | Silicon of 0.1 % |
| Sulfur | Sulfur of 0.035 % |
| Vanadium | Vanadium of 0.08 % |
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