You are here: Home » News » Company News » ASTM A105 Forged Flanges

ASTM A105 Forged Flanges

Views: 10 Author: Site Editor Publish Time: 2024-12-02 Origin: Site

ASTM A105 forged flanges are made of A105 material through forging process. Flange is an important component used to connect pipes, valves, pumps and other equipment in the pipeline system. It can achieve pipeline connection and sealing, and provide certain mechanical strength and stability for the pipeline system.

What is A105 Standard?

ASTM A105 covers forged carbon steel flange and piping components for ambient and higher-temperature service in pressure systems. It also includes pipe fittings, valves and similar parts. The maximum weight manufactured forging part follows by this standard is 10000 bounds (4540kg). The larger forgings can according by the standard A 266/A266M. This specification do not covers tube sheets and hollow cylindrical forgings for pressure vessel shells .

ASTM A105 Forged Flanges Specification

ASTM A105 Carbon Steel is the most common forged material of group of materials under ASME/ANSI B16.5 standard (Pipe flanges and flanged fittings), which is the most common flange standard in the industry on the US influence.

Standard	ASME B16.5
Sealing Face	RF, FF, FTJ
Size Range	1/2” to 24” / DN15 — DN600
Pressure Rating	Class 150, 300, 600, 900, 1500, 2500lb
Carbon Steel	ASTM A105 / A105N

We are a company specializing in the processing of pipes and accessories. We can produce forged flanges of various specifications, with pressures of 150#, 300#, 600#, 900#, 1500#, and 2500#.

Materials of ASTM A105

ASTM A105 Forged Flanges Chemical Composition

CHEMICAL	LIMITS	C	Mn	P	S	Si	Cu	Ni	Cr	Mo	V
ASTM A105	MIN		0.60			0.10
ASTM A105	MAX	0.35	1.05	0.035	0.040	0.35	0.40	0.40	0.30	0.12	0.08

ASTM A105 Forged Flanges Chemical Property

MATERIAL	T.S (MPA)	Y.S (MPA)	EL %	R/A %	HARDNESS
ASTM A105	485 min	250 min	22 min	30 min	197 max

A105 has good forging properties and is suitable for processing using forging technology. During the forging process, the material can smoothly undergo plastic deformation under pressure to obtain the desired shape and size.

It also has good machinability, including machining operations such as cutting and drilling. During the manufacturing process, A105 material can be easily subjected to various machining operations to meet different design requirements.

Forged Flange Types

	Blind Flange A blind flange is a flange without a hole in the middle. It looks similar to a common flange and has bolt holes around it. It is like a sealed "lid" used to close the end of a pipe or isolate a part of a pipe system.
	Lap Joint Flange The main structural feature of the A182 lap joint flange is the loose connection. It consists of a flange body, a flange nipple and connecting bolts.
	Slip On Flange Slip on flange is to insert the pipe into the inner hole of the flange, and then perform fillet welding on the outside of the flange and the pipe. Its structure is relatively simple, easy to manufacture and low cost.
	Socket Weld Flange One end of the socket flange is the socket, and the other end is the flange. The socket part is used to insert the matching pipe, and then sealed by welding or sealing materials.
	Threaded Flange The threaded flange has threads processed on the inner hole of the flange, which is connected to the pipe with external threads through the threads. There are also bolt holes around the flange, which can be used for further connection and fixation with other flanges or equipment.
	Weld Neck Flange Butt welding flange is to connect the flange and the pipe through butt welding. The neck of the flange matches the outer diameter of the pipe. When connecting, the butt joint of the pipe and the flange should be grooved to ensure the welding quality.