AISI 304H 2B Stainless Steel Sheet

What Is AISI 304H 2B Stainless Steel Sheet?

AISI 304H 2B stainless steel sheet is a high-carbon version of the 304 grade (carbon content between 0.04% and 0.10%), specifically designed for enhanced high-temperature strength, improved creep resistance, and long-term stability in environments above 500–800°C. It is less expensive than 316H or 321 in many industries, and its 2B cold-rolled surface is smooth and flat. It is widely used in heat exchangers, boiler components, petrochemical equipment, furnaces, and pressure vessels.

 

AISI 304H 2B Stainless Steel Sheet Specifications 

Category	Specifications
Grade	AISI 304H Stainless Steel Sheet
Surface Finish	2B (Cold Rolled, Annealed & Smooth Surface)
Standards	ASTM A240 / ASME SA240, JIS G4305, EN 10088-2
UNS Number	UNS S30409
Thickness Range	0.3 mm – 6 mm (Cold Rolled Sheet)
Width Options	1000 mm, 1219 mm, 1250 mm, 1500 mm, 1524 mm
Length Options	2000 mm, 2438 mm, 3000 mm, 6000 mm; custom lengths available
Dimensional Tolerances	Thickness: ±0.02–0.08 mm; Width: ±2 mm; Length: ±3 mm
Edge Condition	Mill Edge / Slit Edge
Surface Roughness	2B Finish, Ra typically ≤ 0.3–0.5 μm
Package Options	Standard export wooden pallets, waterproof wrapping, PVC protective film

 

Chemical Composition (AISI 304H)

Element	Content (%)
C	0.04–0.10
Cr	18.0–20.0
Ni	8.0–10.5
Mn	≤ 2.00
Si	≤ 0.75
P	≤ 0.045
S	≤ 0.030
Fe	Balance

 

Mechanical Properties

Property	304H Value
Tensile Strength	515 MPa min
Yield Strength (0.2%)	205 MPa min
Elongation	40%
Hardness	≤ 201 HB
Maximum Service Temp.	Up to 900°C

 

Is 304H suitable for high-temperature boilers?

Yes, 304H is suitable for high-temperature boilers because its higher carbon content gives it greater strength at high temperatures (up to approximately 800°C). This makes it ideal for high-temperature applications such as industrial boilers, heat exchangers, and steam piping.

 

What is the difference between 304H and 304?

The main difference lies in the carbon content: 304 has a maximum carbon content of 0.08%, while 304H has a higher carbon content, ranging from 0.04% to 0.10%. Due to its higher carbon content, 304H stainless steel is well-suited for high-temperature applications. 304 is a standard grade suitable for general purposes, while 304H is specifically designed for high-temperature environments.

 

What is the difference in heat resistance between 304H and 321 stainless steel?

Due to the addition of titanium, 321 stainless steel has better heat resistance than 304H. Titanium stabilizes the alloy and prevents carbide precipitation at high temperatures. Therefore, 321 stainless steel is better suited for applications that are continuously exposed to temperatures up to 1650°F (900°C), while the maximum heat resistance of 304H is approximately 1472°F (800°C).

 

Price of AISI 304H 2B Stainless Steel Sheet (Today)

Market reference only-subject to daily raw-material changes.

Today's price range of AISI 304H 2B sheet is approximately USD 2,400–2,750 per ton, depending on thickness, coil origin, and surface quality.

Thicker plates (6–12 mm) typically cost 8–12% higher due to rolling difficulty.

 

 

 

A petrochemical plant in Saudi Arabia needed 304H 2B plates for a 600°C heat-exchanger project. Gnee supplied:

60 tons of 2B sheets (3–8 mm)

Full MTC EN 10204 3.1

CNC cut-to-size service

Delivery in 10 days

Result: customer reduced fabrication time by 20% and increased equipment lifespan by 30% compared with their previous 304L materials.

Gnee offers high-quality 304H stainless steel sheets with strict quality control:
Monthly supply capacity: 1800 tons
Thickness range: 0.5–12 mm (2B)
Inventory advantage: Over 500 tons in stock
Inspection: Factory test certificate conforming to EN 10204 3.1/3.2 standards
Processing: Cutting, polishing, bending, leveling
Delivery time: 7–12 days
Gnee's products are exported to over 60 countries, offering stable quality and highly competitive prices.