Yuhong Group Co.,Ltd |
Verified Suppliers
|
|
We are one of the largest suppliers of engineered piping products in China. Our products include steel pipes/pipes, fittings, flanges. After more than 20 years of development, we have accumulated many customers all over the world, and Yuhong products have also won unanimous praise from customers.
ASTM A403 is a balanced austenitic chromium steel in which the end of carbide precipitation and therefore intergranular corrosion is considered. ASTM A403 is a balanced austenitic chromium steel in which the end of carbide precipitation and therefore intergranular corrosion is considered.
ASTM A403 is offset by the addition of chromium and tantalum and provides higher creep and stress rupture properties than A304 and A304L, which can also be used for exposures related to sensitization and intergranular corrosion. The expansion of columbium also gives ASTM A403 superior corrosion resistance over A321. ASTM A403H is a higher carbon version of ASTM A403 with enhanced high temperature and creep properties.
ASTM A403 is offset by the addition of chromium and tantalum and provides higher creep and stress rupture properties than A304 and A304L, which can also be used for exposures concerned with sensitization and intergranular corrosion. The expansion of columbium also allows ASTM A403 to have outstanding corrosion resistance over A321. ASTM A403H is a higher carbon content form of ASTM A403 and exhibits enhanced high temperature and creep properties.
ASTM A403 WP304-S 90 Deg. Elbow covers the standard for wrought austenitic stainless steel fittings
for pressure piping applications. The material of pipe fittings
shall include forgings, bars, plates or seamless or welded pipes.
Forging or forming operations shall be performed by hammering,
pressing, piercing, extruding, upsetting, rolling, bending, fusion
welding, machining, or a combination of two or more of these
operations. All accessories should be heat treated.
Chemical and product analysis should be performed and should meet
the required chemical composition of carbon, manganese, phosphorus,
sulfur, silicon, chromium, molybdenum and titanium. Tensile tests
should be performed on fitting materials to determine tensile
properties such as yield strength and tensile strength. Accessories
supplied in accordance with this specification shall be visually
inspected for surface discontinuities, surface inspections, and
mechanical markings.
Characteristics
ASTM A403 WP304-S Chemical Composition
Element | 304 | 304L |
Chromium | 17.5 min.-19.5 max. | 17.5 min.-19.5 max. |
Nickel | 8.00 min.-10.50 max. | 8.00 min.-12.00 max. |
Carbon | 0.07 | 0.03 |
Manganese | 2 | 2 |
Phosphorus | 0.045 | 0.045 |
Sulfur | 0.03 | 0.03 |
Silicon | 0.75 | 0.75 |
Columbium & Tantalum | 10 x (C + N) min.-1.00 max. | 8 x (C + N) min.-1.00 max. |
Iron | Balance | Balance |
ASTM A403 WP304 Mechanical Properties
Grade | 304 |
Tensile Strength (MPa) min | 515 |
Yield Strength 0.2% Proof (MPa) min | 205 |
Elongation (% in 50mm) min | 40 |
Hardness | |
Rockwell B (HR B) max | 92 |
Brinell (HB) max |
Application