ASTM A182 F316 / A182M F316L

ASTM A182 F316 and F316L are forged austenitic stainless steels commonly used for flanges, fittings, valves, and other pressure-containing parts in high-temperature and corrosive environments. These materials offer excellent resistance to corrosion, good mechanical strength, and reliable weldability, making them ideal for chemical processing, offshore, and food industries.

 

ASTM A182 F316 / A182M F316L.pdf

 

ASTM A182 F316 / F316L?

ASTM A182 F316 is a molybdenum-bearing stainless steel known for its superior corrosion resistance and strength. Its low-carbon version, F316L, is specifically designed to minimize the risk of intergranular corrosion after welding, making it ideal for welded pressure systems.

 

Key Differences Between F316 and F316L

	F316	F316L
	<= 0.08%	<= 0.03%

A182 F316 / F316L Chemical Composition (% by weight)

	F316	F316L
C	<= 0.08	<= 0.03
	16.0 – 18.0	16.0 – 18.0
	10.0 – 14.0	10.0 – 14.0
	2.0 – 3.0	2.0 – 3.0

A182 F316 / F316L Mechanical Properties

	F316	F316L
	>= 205 MPa	>= 170 MPa
	>= 515 MPa	>= 485 MPa
	>= 30%	>= 30%
	<= 217 HB	<= 217 HB

 

A182 F316 / F316L Range & Specifications

: Socket weld & threaded types (1/8" to 4")

: Weld neck, slip-on, blind, threaded, socket weld

: Class 150#, 300#, 600#, 900#, 1500#, 2500#

: ASME B16.5, MSS-SP-79/83/95, ANSI B16.11

What is the difference between ASTM A182 and A240?
ASTM A182 is for forged components like flanges and fittings; A240 is for flat-rolled stainless steel plate and sheet.

 

Can ASTM A182 F316L be welded without post-weld heat treatment?
Yes. Its low carbon content (<=0.03%) helps avoid carbide precipitation, reducing the risk of intergranular corrosion.

 

Which is better, F316 or F316L?
F316 has higher strength, while F316L offers better weldability and corrosion resistance after welding.