Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASTM A213/A269 TP304L Seamless Austenitic Steel Tube
YUHONG GROUP deal with stainless steel seamless pipe and tube already more than 33 years, every year sell more than 80000 tons of stainless steel seamless pipe and tube. Our client already cover more than 65 countries. Our stainless steel seamless pipe and tube was width used in Mining, Energy, Petrochemical, Chemical Industry, Food plant, Paper plant, Gas and Fluid Industry etc.
Description
Grade304 is the most versatile and most widely used stainless steel and it is widely used in diffdererant areas than any other. It has excellent forming and welding characteristics. The balanced austenitic structure of Grade 304 enables it to be severely deep drawn without intermediate annealing, which has made this grade dominant in the manufacture of drawn stainless parts such as sinks, hollow-ware and saucepans. for these applications it is common to use special "304DQ" (Deep Drawing Quality) variants. Grade 304 is readily brake or roll formed into a variety of components for applications in the industrial, transportation and architectural fields. Grade 304 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.
Grade304L, the low carbon version of 304, does not require post-weld annealing and so is extensively used in heavy gauge components (over about 6mm). Grade304H with its higher carbon content finds application at elevated temperatures. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.
We supply
ASTM A213 TP304L Stainless Steel Seamless Pipes Specification | ASTM A269, ASTM A213, ASTM A312, ASME SA269, ASME SA213, ASME SA312 |
ASTM A213 TP304L Stainless Steel Seamless Pipes Grades | 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 316LN, 317L, 321, 321H, 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC. |
Composition ranges
Grade | C | Mn | S | Si | P | Cr | Mo | Ni | N | |
304 | Min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
Max. | 0.08 | 2.0 | 0.030 | 0.75 | 0.045 | 20.0 | 10.5 | 0.10 | ||
304L | Min. | - | - | - | - | - | 18.0 | - | 8.0 | - |
Max. | 0.030 | 2.0 | 0.030 | 0.75 | 0.045 | 20.0 | 12.0 | 0.10 | ||
304H | Min. | 0.04 | - | - | - | - | 18.0 | - | 8.0 | - |
Max. | 0.10 | 2.0 | 0.030 | 0.75 | 0.045 | 20.0 | 10.5 | |||
Mechanical properties
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
304 | 515 | 205 | 40 | 92 | 201 |
304L | 485 | 170 | 40 | 92 | 201 |
304H | 515 | 205 | 40 | 92 | 201 |
304H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
Physical properties
Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
304/L/H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Grade specifications
Grade | UNS No | Old British | Euronorm | Japanede JIS | Swedish SS | ||
BS | En | No | Name | ||||
304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | SUS 304 |
|
304L | S30403 | 304S11 | - | 1.4306 | X2CrNi19-11 | SUS 304L |
|
304H | S30409 | 304S51 | - | 1.4948 | X6CrNi18-11 | - | - |
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted. | |||||||
Applications
