ASTM A213 TP304H Heat Resistant Stainless Steel Seamless Tube
304H Stainless Steel Seamless Pipe - We are one of the leading exporter, manufacturers and Suppliers in all Stainless Steel Seamless & ERW Pipes of Grades 304, 304L, 316, 316L, 321, 309, 310, 316 Ti, Duplex and also Hastealloy Pipes.
Unlike 304L, Type 304H has a higher carbon content making the steel more suitable for use in applications where elevated temperatures are present. It is an austenitic chromium-nickel steel alloy and the greater carbon content delivers an increased tensile and yield strength.
The material is recommended for use in ASME pressure vessels in working service above 525 °C due to the grade's heat resistant properties.
Benefits of using 304H Stainless Steel pipe
Higher carbon content gives the material greater heat resistant qualities
Higher tensile yield strength
Greater short and long term creep strength
304 alloy is commonly found in the oil refining, gas and chemical industry and is used in industrial boilers, pressure vessels, heat exchangers, pipelines and condensers. The material is also used throughout the power generation industry.
Chemical Properties
UNS No |
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
N |
|
S30409 |
304H |
0.04/0.10 |
0.75 |
2.00 |
0.045 |
0.030 |
18.00/20.00 |
– |
8.00/10.50 |
– |
Mechanical Properties
|
UNS No |
Grade |
Proof Stress |
Tensile Strength |
Elongation |
Hardness Max |
|
|
HB |
HRB |
|||||
|
S30409 |
304H |
205 |
515 |
40 |
201 |
92 |
