What is ASTM A105 Equivalent to Steel?

 

ASTM A105 is a carbon steel specification for forged components like fittings and flanges, equivalent to materials like EN 10222-2 P245GH and JIS G3202 SFVC1.At Gangsteel, we supply high-quality carbon steel plates, including ASME SA 516 GR 70, complementing A105’s applications. This article explores A105’s properties, equivalents, and its role in industrial applications.

 

Overview of ASTM A105

 

ASTM A105 is a standard specification for carbon steel forgings used in piping components, such as flanges, fittings, and valves, designed for high-temperature and high-pressure services. Unlike SA 516 plates, A105 is forged, not rolled, offering superior strength for smaller components. Gangsteel’s expertise ensures compatibility with related plate grades like ASTM A 516 GR 70.

Chemical Composition

 

A105’s composition is tailored for forging:

Element	Composition (% by Weight)	Notes
Carbon (C)	≤0.35	Higher than SA 516 for forging strength.
Manganese (Mn)	0.60 - 1.05	Enhances toughness.
Phosphorus (P)	≤0.035	Ensures weldability.
Sulfur (S)	≤0.040	Low sulfur for quality.
Silicon (Si)	0.10 - 0.35	Improves forging properties.

 

Mechanical Properties

 

Property	Value	Notes
Tensile Strength	485 MPa (min, 70 ksi)	Comparable to SA 516 GR 70.
Yield Strength (min)	250 MPa (36 ksi)	Ensures durability in piping.
Elongation (min)	22%	Good ductility for forged components.

 

Equivalents to ASTM A105

 

ASTM A105’s carbon steel properties align with:

• EN 10222-2 P245GH: European standard for pressure vessel forgings, similar carbon content.
• JIS G3202 SFVC1: Japanese equivalent for forged fittings.
• GB/T 12228 20Mn: Chinese standard with comparable strength.

These equivalents ensure global compatibility in piping systems.

 

Applications

A105 is used in:

• Piping Systems: Flanges and fittings in oil and gas.
• Pressure Vessels: Complements ASME SA 516 GR 60 in vessel assemblies.
• Power Plants: High-temperature piping components.

 

Gangsteel’s Role

While Gangsteel focuses on plates like ASME SA 516 GR 65, we ensure compatibility with A105 components through precise material specifications.

 

Conclusion

ASTM A105 is a carbon steel forging specification equivalent to P245GH and SFVC1, used for high-pressure piping components. Gangsteel supports related applications with high-quality SA 516 plates. Contact us for integrated steel solutions.

Keywords: ASTM A105 equivalent, carbon steel forgings, pressure vessel fittings, Gangsteel plates