Characteristic
304L belong to low carbon steel grade,Rather than its demonstrates
excellent corrosion resistance.For severely corrosive environments, the lower content of Type 304L
is preferred because of its greater immunity to intergranular
corrosion.304L stainless steel include in the Power Genration Industry ,Chemical Industry ,Oil&Gas Industry,
Petrochemical Industry.
Application
Food processing equipment, particularly in beer brewing, milk
processing, and wine making Kitchen benches, sinks, troughs,
equipment, and appliances
Architectural trim and molding
Automotive and aerospace structural use
Construction material in large buildings
Chemical containers, including for transport
Heat exchangers
Nuts, bolts, screws, and other fasteners in the marine environment
Dyeing industry
Woven or welded screens for mining, quarrying & water filtration
Equivalent Grade
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS |
| BS | En | No | Name |
| 304L | S30403 | 304S11 | 58E | 1.4307 | X5CrNi18-10 | 2332 | SUS 304L |
Specification
| Ends | Plain end |
| Welding line type | ERW |
| Delivery time | within 15 -20 days. |
| Payment Terms | 40% prepayment Balance before lodaing. |
| Shipping Terms | FOB NINGBO, after the inspection of goods at supplier's warehouse |
| Package | Standard export seaworthy package,or as required. |
304L Stainless Pipe Chemical Composition
| Grade | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Ni ≤ | Cr ≤ |
| 304L | 0.035 | 0.75 | 2 | 0.045 | 0.03 | 8.00-13.00 | 18.00-20.00 |
Mechanical Composition
| Grade | Tensile | Yield | %Age | Hardness (Max) |
| Strength Mpa, (Min) | Strength | Elongation |
| Mpa, (Min) | in 50mm |
| gauge length min | BHN | Rb |
| 304L | 485 | 170 | 40 | 201 | 92 |
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 |
| 304L | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Corrosion resistance
Resistance to corrosion in oxidizing environments is a result of
the 18 to 20% chromium that the 304 contain. Resistance to
moderately aggressive organic acids is a result of the 8 to 13%
nickel that the 304 contain. At times, 304L may show a lower
corrosion rate than the higher carbon 304; otherwise, the 304,
304L, and 304H may be considered to perform uniformly in most
corrosive environments. Alloy 304L is preferred for use in
environments sufficiently corrosive to cause intergranular
corrosion of welds and heat-affected zones on susceptible alloys.
Heat resistance
Good oxidation resistance in intermittent service to 1600°F and in
continuous service to 1690°F.
Continuous use of 304 in the 800-1580°F range is not recommended if
subsequent aqueous corrosion resistance is important.
Grade 304L is more resistant to carbide precipitation and can be
heated into the above temperature range.
Product Testing
Coating Thk Test
Geometry inspection
Ultrasonic Inspection
Nondestructive Testing
Hydrostatic Testing
Package Process
1.with plastic cap to protect both ends
2.weaving bag wrapped outside the pipe
3.then pack into wooden case.
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