What is A182 F304L material?

What Is A182 F304L Material?

A182 F304L is a low-carbon austenitic stainless steel grade primarily used for forged components such as flanges, fittings, valves, and pressure vessel parts. It is manufactured in accordance with the ASTM A182 standard, which covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and valves for high-temperature service.

Because of its excellent corrosion resistance, weldability, and low carbon content, A182 F304L is widely used in chemical, petrochemical, power generation, and food processing industries.

 

Chemical Composition of A182 F304L Flanges

Element	Composition (%)
Carbon (C)	≤ 0.035
Chromium (Cr)	18.0 – 20.0
Nickel (Ni)	8.0 – 12.0
Manganese (Mn)	≤ 2.0
Silicon (Si)	≤ 1.0
Phosphorus (P)	≤ 0.045
Sulfur (S)	≤ 0.03
Iron (Fe)	Balance

 

Mechanical Properties of ASTM A182 F304L forged flange

Property	Metric	Imperial
Tensile Strength	≥ 485 MPa	≥ 70 ksi
Yield Strength (0.2% offset)	≥ 170 MPa	≥ 25 ksi
Elongation	≥ 35%	≥ 35%
Hardness (Brinell)	≤ 192 HB	≤ 192 HB

 

Applications of A182 F304L
Pressure vessel parts
Pipe fittings and flanges
Valves and manifolds
Heat exchanger components
Food and beverage processing equipment
Marine hardware and chemical tanks

 

ASTM A182 F304L Material vs. A182 F304

The main difference lies in the carbon content; the maximum carbon content of ASTM A182 F304L (0.03%) is lower than that of ASTM A182 F304 (0.08%). The lower carbon content of F304L makes it more resistant to intergranular corrosion after welding, but its tensile strength and yield strength are slightly lower. Therefore, F304L is more suitable for welding applications, while F304 is suitable for general-purpose applications where welding is not a primary consideration.

 

Is ASTM A182 F304L stainless steel magnetic?
No, it is generally non-magnetic in the annealed condition but may become slightly magnetic after cold working.

 

Can A182 F304L be used in seawater applications?
It can resist mild marine environments, but for prolonged seawater exposure, 316L or duplex grades are preferred.

 

A182 F304L stainless steel forged fittings Price Trends
The A182 F304L stainless steel forged fittings and flanges are priced between US $3.5 to $5.2 per kg, depending on size, surface finish, and quantity.
With growing demand from chemical and oil & gas industries, 304L flanges and fittings are expected to see a steady 4–6% market growth globally through 2026.

 

If you are looking for A182 F304L stainless steel materials, Gnee can provide precisely cut, polished, and certified products that meet your project requirements.
Gnee offers:
✅ Large inventory of A182 F304L flanges, fittings, and bars in stock.
✅ Custom machining & forging services based on ASTM, ASME, and EN standards.
✅ Strict quality control with ISO, SGS, and BV certifications.
✅ Fast delivery within 7–15 days worldwide.
✅ Competitive factory prices directly from our production plant.

Email: sales@gneestainless.com