What is 304H stainless steel?
What is 304H stainless steel?
Alloy 304/304H (UNS S30400/ S30409) is a modification of the most widely utilized “18-8” chromium-nickel austenitic stainless steel. It is an economical and versatile corrosion resistant alloy suitable for a wide range of general purpose applications. It is common practice for 304H to be dual certified as 304 and 304H.
What is the difference between 304 and 304H?
Heat Resistance Grade 304L is resistant to carbide precipitation and can be heated into this temperature range. Grade 304H has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500°C and up to about 800°C.
What is the L in 304L stainless steel?
extra-low carbon
The “L” in 304L can be interpreted as meaning extra-low carbon. This difference of 0.05% carbon content produces a slight, but marked, difference in the performances of the two alloys.
Which is better SS 304 or SS 410?
Type 410 resists corrosion in mild atmospheres, steam, and many mild chemical environments. Type 2205 may have advantages over Type 304 and 316 since it is highly resistant to chloride stress corrosion cracking and is about twice as strong.
What is the chemical composition of 304 stainless steel?
Type 304 is the most versatile and widely used stainless steel. It is still sometimes referred to by its old name 18/8 which is derived from the nominal composition of type 304 being 18% chromium and 8% nickel. Type 304 stainless steel is an austenitic grade that can be severely deep drawn.
What does 304H mean?
Type 304/304H is a modification of Type 304 with carbon content controlled in the range of 0.04 to 0.10 for increased strength at temperatures above approximately 800 degrees F. Unlike 304L, Type 304H with a higher carbon content makes the steel more suitable for use in higher temperature applications.
How strong is 304L stainless steel?
Machinability:
| Grade | Tensile Strength ksi (min) | Elongation % |
|---|---|---|
| 304L | 70 | 40 |
| Grade | Tensile Strength ksi (min) | Elongation % |
What is 304L stainless steel used for?
The stainless steel types 304 or 304L are also known as 18/8 stainless because of their chemical composition including approximately 18% chromium and 8% nickel by weight. They are widely used in the food and drink processing industries because they are easy to form and to weld and have a great resistance to corrosion.
What is the strongest stainless steel?
Even among steel alloys, grade 304 stainless steel is noteworthy for its high tensile strength—roughly 621 MPa (90 ksi). Like most stainless steels, grade 304 has a high maximum operating temperature (about 870˚C).
Can 304 SS be hardened?
304 stainless steel cannot be hardened by heat treatment. Solution treatment or annealing can be done by rapid cooling after heating to 1010- 1120°C.
Which is better SS 304 or 316?
Though the stainless steel 304 alloy has a higher melting point, grade 316 has a better resistance to chemicals and chlorides (like salt) than grade 304 stainless steel. When it comes to applications with chlorinated solutions or exposure to salt, grade 316 stainless steel is considered superior.
