ASTM A106 carbon steel pipe is a common American standard for steel pipe. This standard are mainly composed of elements such as carbon, manganese, phosphorus, sulfur, etc. In addition, the steel pipe also contains a certain amount of alloy elements such as silicon, copper, nickel, chromium, etc., to improve the corrosion resistance and high temperature resistance of the steel pipe.
ASTM A106 Specification
ASTM A106 carbon steel pipe specification is mainly applicable to seamless steel pipes size range of 1/8″ to 48″ (DN6 to DN1200). Wall thickness of these steel pipes must comply with ASME B36.10 standard.
| Size Range | 1/8″-48″/DN6-1200 |
| Thickness Schedule | SCH 10,SCH 20,SCH 40,STD,XS,SCH 100,SCH 120,SCH 160,XXS |
| Lengt | 6m or 12 m or Random |
| Standard | ASME B36.10M |
| Surface Treatment | Blasting and Painting,Epoxy Powder FBE,2PE,3PE Coating |
The content of ASTM A106 carbon steel pipe standard covers the type, size range, usage conditions, raw materials, chemical composition requirements, processing methods, heat treatment methods, mechanical properties (such as tensile strength, yield strength, elongation, etc.), specific content, size and allowable deviation of chemical composition (such as diameter, wall thickness, length, etc.), test methods (such as chemical analysis, tensile test, impact test, etc.), as well as marking and packaging requirements of pipes.
ASTM A106 Material Grade
ASTM A106 carbon steel pipe material standard consists of three grades: A, B, and C.
ASTM A106 Grade A： It is mainly composed of C and Si components, with a tensile strength grade of 330MPa.
Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | V |
| ASTM A106A | MIN | 0.27 | 0.10 | ||||||||
| MAX | 0.25 | 0.93 | 0.035 | 0.035 | 0.40 | 0.15 | 0.40 | 0.40 | 0.08 |
Mechanical Properties
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
| ASTM A106A | 330 min | 205 min | 35 min |
ASTM A106 Grade B: Contains C, Mn, and Si components. Tensile strength grade of 415MPa, yield strength shall not be less than 240MPa.
Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | V |
| ASTM A106B | MIN | 0.29 | 0.10 | ||||||||
| MAX | 0.30 | 1.06 | 0.035 | 0.035 | 0.40 | 0.15 | 0.40 | 0.40 | 0.08 |
Mechanical Properties
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
| ASTM A106B | 415 min | 240 min | 22 min |
ASTM A106 Grade C：This grade of steel pipe is similar to Q345 small diameter seamless steel pipe. It is also composed of C, Mn, and Si components, but the tensile strength level is further increased to 485 MPa.
Chemical Composition
| CHEMICAL | LIMITS | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | V |
| ASTM A106C | MIN | 0.29 | 0.10 | ||||||||
| MAX | 0.35 | 1.06 | 0.035 | 0.035 | 0.40 | 0.15 | 0.40 | 0.40 | 0.08 |
Mechanical Properties
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
| ASTM A106C | 485 min | 275 min | 30 min |
ASTM A106 GRADE B Equivalent Material
ASTM A106 B carbon steel pipe is similar to that of ASTM A53 B and API 5L B material steel pipes. But their chemical composition and mechanical properties also have slight differences. Therefore, when selecting materials, it is also necessary to meet the specific application requirements of the pipeline system.
Dimensions & Weight
The outer diameter range of ASTM A106 carbon steel pipe is from 1/8 inch to 48 inches (DN6 to DN1200). Wall thickness range includes SCH 10, SCH20, SCH40, STD, SCH60, SCH80, XS, etc. The nominal wall thickness of these steel pipes must comply with ASME B36.10 standard.
ASTM A106 Carbon Steel Pipe Weight List(1/8″-4″）
| DN | NPS | OD | SCH30 | STD | SCH40 | XS | 80 |
| 6 | 1/8 | 10.3 | 1.45 | 1.73 | 1.73 | 2.41 | 2.41 |
| 8 | 1/4 | 13.7 | 1.85 | 2.24 | 2.24 | 3.02 | 3.02 |
| 10 | 3/8 | 17.1 | 1.85 | 2.31 | 2.31 | 3.20 | 3.20 |
| 15 | 1/2 | 21.3 | 2.41 | 2.77 | 2.77 | 3.73 | 3.73 |
| 20 | 3/4 | 26.7 | 2.41 | 2.87 | 2.87 | 3.91 | 3.91 |
| 25 | 1 | 33.4 | 2.90 | 3.38 | 3.38 | 4.55 | 4.55 |
| 32 | 11/4 | 42.2 | 2.97 | 3.56 | 3.56 | 4.85 | 4.85 |
| 40 | 11/2 | 48.3 | 3.18 | 3.68 | 3.68 | 5.08 | 5.08 |
| 50 | 2 | 60.3 | 3.18 | 3.91 | 3.91 | 5.54 | 5.54 |
| 65 | 21/2 | 73.0 | 4.78 | 5.16 | 5.16 | 7.01 | 7.01 |
| 80 | 3 | 88.9 | 4.78 | 5.49 | 5.4g | 7.62 | 7.62 |
| 90 | 31/2 | 101.6 | 4.78 | 5.74 | 5.74 | 8.08 | 8.08 |
| 100 | 4 | 114.3 | 4.78 | 6.02 | 6.02 | 8.56 | 8.56 |
Application
ASTM A106 carbon steel pipe have excellent mechanical properties, welding performance, and corrosion resistance, as well as high strength and toughness.Therefore, it is widely used in pipeline transportation systems in industries such as petroleum, chemical, power, pharmaceuticals, and food, as well as in the manufacturing of structural components and parts in industries such as construction, machinery, and shipbuilding.