Stainless Steel 304/304L/304H Pipes & Tubes
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
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Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of stainless steel 304/304l/304h pipes & tubes in China. If you're going to wholesale high quality stainless steel 304/304l/304h pipes & tubes made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
Pipes and tubes available are interchangeably used in industrial applications. The best way that the industries are distributing fluids among the applications is with the help of the tubular section of the pipes. This is the best to supply all the gas and the fluids which are available. The pipe is the hollow sections which are used in the applications with the round cross-sections that convey the products easily. The dimensions and the diameter of the pipe are noted according to the application in which it is used.
The SS 304 alloy steel is used in the development of the pipe and tubes. However, the alloy is made up of chromium and nickel contents which are providing the pipes and tubes various properties. In addition to this, the SS 304L is the low carbon content than the 304 alloy steel. This is the way that it is good at having the intergranular corrosion resistance ability. In the same way, the SS 304H is the high-temperature application used alloy which is there with the high-temperature strength and the ability to work in the elevated temperatures.
The alloy is the reason that the SS 304/304L/304H Pipes & Tubes are having different properties. Some of the properties which the pipes and tubes are having are corrosion resistance, great ductility, durability, stability in the elevated temperatures, and great toughness.
CHEMICAL COMPOSITION OF STAINLESS STEEL 304/304L/304H SEAMLESS PIPES AND TUBES
| C | Mn | Si | P | S | Cr | Ni | N | |
|---|---|---|---|---|---|---|---|---|
| 304 | 0.07max | 2.0max | 0.75max | 0.045max | 0.03max | min: 18.0 max: 20.0 | min: 8.0 max: 10.5 | - |
| 304L | 0.03max | 2.0max | 0.75max | 0.045max | 0.03max | min: 18.0 max: 20.0 | min: 8.0 max: 12.0 | 0.10 max |
| 304H | min: 18.0 max:20.0 |
min: 8.0 max: 10.5 |
min: 0.04 max:0.10 |
0.75 max |
2.0 max |
0.045 max |
0.03 max |
0.10 max |
MECHANICAL PROPERTIES OF STAINLESS STEEL 304/304L/304H SEAMLESS PIPES AND TUBES
| Grade | Tensile Strength ksi (min) | Yield Strength 0.2% ksi (min) | Elongation % | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
|---|---|---|---|---|---|
| 304 | 75 | 30 | 40 | 201 | 92 |
| 304L | 70 | 25 | 40 | 201 | 92 |
| 304H | 75 | 30 | 40 | 201 | 92 |
PHYSICAL PROPERTIES OF 304/304L/304H STAINLESS STEEL PIPES AND TUBES
| SS 304/304L | ||||||
|---|---|---|---|---|---|---|
| Density lbm/in3 |
Thermal Conductivity (BTU/h ft. °F) |
Electrical Resistivity (in x 10-6) |
Modulus of Elasticity (psi x 106 |
Coefficient of Thermal Expansion (in/in)/ °F x 10-6 |
Specific Heat (BTU/lb/ °F) |
Melting Range (°F) |
| at 68°F: 0.285 | 9.4 at 212°F | 28.3 at 68°F | 28 | 9.4 at 32 – 212°F | 0.1200 at 68°F to 212°F | 2500 to 2590 |
| 12.4 at 932 °F | 39.4 at 752°F | 10.2 at 32 – 1000°F | ||||
| 49.6 at 1652 °F | 10.4 at 32 – 1500°F | |||||
| SS 304H | ||||||
| Denstiy lbm/in3 |
Coefficient of Thermal Expansion (min/in)-°F |
Thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | ||
| at 68 °F | at 68 – 212°F | at 68 – 1600°F | at 212°F | at 932°F | at 32 – 212°F | in tension (E) |
| 0.285 | 9.2 | 11.0 | 9.4 | 12.4 | 0.12 | 29 x 106 |
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