ASME SA105 Carbon Steel Forged Fitting Socketwelded B16.11
ASME SA105 specification covers forged carbon steel pipe components for use in pressure systems at ambient and higher temperatures. It is the authoritative material standard for the manufacture of pressure-bearing carbon steel forged pipe fittings (especially flanges). It ensures that forgings have excellent comprehensive mechanical properties, good processability and weldability by stipulating strict chemical composition, heat treatment systems such as normalizing or quenching + tempering, and mechanical properties such as strength, plasticity, and hardness.
Pipe fittings under this standard must also meet the shape, size and pressure rating requirements of ASME B16.11. SA105 pipe fittings are widely used in non-corrosive environments with medium to high temperatures and medium to high pressures due to their reliability and cost-effectiveness. They are the basic materials for pressure piping systems in many industrial fields such as petroleum, chemical, electric power, and shipbuilding.
ASME SA105 is a medium-low carbon steel, and its chemical composition is shown in the following table:
Chemical Composition of ASTM A105 Elbow
| C | Mn | P | S | Si |
| .35 max | .60/1.05 | .040 max | .05 max0 | .35 max |
The carbon element controls the weldability and toughness of the product, the manganese element can improve the strength and hardenability of the product, and the silicon element can act as a deoxidizer to improve the strength of the product.
Mechanical Properties of ASTM A105 Elbow
| Grade | Yield Strength, Min (MPa) | Tensile Strength, Min (MPa) | Elongation, min, % |
| A105 Pipe Fitting | 250 | 485 | 30 |
ASME SA105 Carbon Steel Forged Fitting Application
ASME SA105 forged pipe fittings are widely used in industrial piping systems that require reliable pressure bearing capacity, especially in the following fields:
Oil and gas: In the field of oil and gas, ASME SA105 forged pipe fittings can be used in production pipelines, gathering pipelines, and utility pipelines on land and offshore platforms for transporting water, steam, air, etc.
Petrochemical and chemical industry: In the field of petrochemical industry, ASME SA105 forged pipe fittings can be used in various process pipelines and utility pipelines.
Power industry: In the power industry, ASME SA105 forged pipe fittings can be used as important connecting parts in the main steam, feed water, condensate, cooling water systems, etc. of thermal power plants and nuclear power plants (non-nuclear grade parts).
Shipbuilding and offshore engineering: ASME SA105 forged pipe fittings can be widely used in ship piping systems and offshore platform facilities in shipbuilding and offshore engineering.
General industry: ASME SA105 forged pipe fittings can be used in pressure piping systems of water treatment plants, paper mills, pharmaceutical plants (not parts with extremely high cleanliness requirements), etc.
Building facilities: ASME SA105 forged pipe fittings can be used in HVAC high-pressure hot water/steam systems of high-rise buildings.
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