Views: 7 Author: Site Editor Publish Time: 2025-08-08 Origin: Site
In April , we received a regular inquiry from China regarding SS904L stainless steel pipe. Because we have established a long-term cooperative relationship, we have a good understanding of the customer's requirements. When quoting, we have already listed the packaging methods, transportation costs, and other details required by the customer one by one, making it easy for them to proceed with the next step of work when they receive the quotation.
SS904L stainless steel pipe is one of our company's main products, and due to its special material, its price is higher than that of ordinary stainless steel 304 and 316 steel pipes. So when we provide quotes to customers, we consider how to package them during transportation to better protect the surface of the steel pipes from scratches and damage.
In the end, we suggest that the customer wrap plastic film around the surface of the steel pipe and pack it in wooden boxes, which can effectively protect the steel pipe from damage during transportation.
It is precisely because we pay attention to details and control in our work that we have won the full trust of our customers. Shortly after quoting, we received an order from the customer.
Item | Description | QTY | UNIT | Remark |
1 | PIPE,BE,DN200 Sch 10S,OD219.1,ASTM A312-N08904/SS-904L,SMLS, ASME B36.19 | 36 | M | |
2 | PIPE, BE,DN125 SCh 10S,OD141,3 ASTM A312-N08904/SS-904L, SMLS, ASME B36.19 | 60 | M | SMLS |
3 | PIPE, BE, DN100 SCh 10S, OD114, ASTM A312-N08904/SS-904L, SMLS, ASME B 36.19 | 60 | M | SMLS |
4 | PIPE, BE, DN50 SCh 10S,OD60.3, ASTM A312-N08904/SS-904L, SMLS, ASME B 36.19 | 60 | M | SMLS |
In the construction of industrial pipeline systems, stainless steel 904L steel pipes are gradually becoming an irreplaceable material in many industries due to their unique properties and advantages. Whether in extremely corrosive environments or in application scenarios that require high material performance, SS904L stainless steel pipe have demonstrated excellent adaptability and reliability.
The high content of nickel, chromium, and molybdenum endows SS904L stainless steel pipes with excellent corrosion resistance. Nickel element enhances the corrosion resistance of steel pipes in reducing environments, making them resistant to reducing acids such as sulfuric acid and phosphoric acid. Chromium element helps to form a dense oxide film on the surface of steel pipes, improving their stability in oxidizing environments and effectively resisting the erosion of oxidizing acids such as nitric acid. The addition of molybdenum significantly enhances the resistance of steel pipes to chloride ions, making them excellent in resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking in media containing chloride ions, such as seawater, saltwater, and other environments.
CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | N |
SS904L | MIN | 23.00 | 19.00 | 4.00 | ||||||
MAX | 0.020 | 2.00 | 0.045 | 0.04 | 1.00 | 28.00 | 23.00 | 5.00 | 0.10 |
In terms of mechanical performance, SS904L steel pipe also performs well. Its tensile strength σ b ≥ 490Mpa, yield strength σ b ≥ 215Mpa, elongation rate δ ≥ 35%, and hardness of 70-90 (HRB). This makes 904L steel pipe not only have high strength, able to withstand large pressures and loads, but also have good toughness, making it less prone to fracture when impacted, and suitable for various complex working conditions.
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % |
SS904L | 490 min | 215 min | 35 min |
The density of stainless steel 904L steel pipe is 8.24g/cm ³, the melting point is between 1300-1390 ℃, and it is non-magnetic. These physical properties give it unique advantages in applications that have specific requirements for material density, melting point, and magnetism. For example, in fields such as aerospace, there are strict limitations on the weight and magnetism of materials, and the low-density and non-magnetic characteristics of 904L steel pipe make it one of the ideal choices.
Grade | Density(kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C(J/kg.K) | Electrical Resistivity (nΩ.m) | |||
0-100°C | 0-315°C | 0-538°C | at 20°C | at 500°C | |||||
SS904L | 7900 | 190 | 15 | 11.5 | 500 | 952 | |||
The specifications of stainless steel 904L steel pipes are diverse and can meet the needs of different industries and application scenarios. The common size ranges are as follows:
Nominal Size | OD | Thickness | ||||
mm | inch | mm | 5S | 10S | 40S | 80S |
6 | 1/8 | 10.3 | 1.24 | 1.73 | 2.41 | |
0.28 | 0.36 | 0.48 | ||||
8 | 1/4 | 13.7 | 1.65 | 2.24 | 3.02 | |
0.51 | 0.64 | 0.82 | ||||
10 | 3/8 | 17.1 | 1.65 | 2.31 | 3.20 | |
0.64 | 0.86 | 1.12 | ||||
15 | 1/2 | 21.3 | 1.65 | 2.11 | 2.77 | 3.73 |
0.82 | 1.01 | 1.30 | 1.65 | |||
20 | 3/4 | 26.7 | 1.65 | 2.11 | 2.87 | 3.91 |
1.04 | 1.31 | 1.71 | 2.24 | |||
25 | 1 | 33.4 | 1.65 | 2.77 | 3.38 | 4.55 |
1.33 | 2.13 | 2.55 | 3.29 | |||
32 | 1¼ | 42.2 | 1.65 | 2.77 | 3.56 | 4.85 |
1.68 | 2.76 | 3.46 | 4.56 | |||
40 | 1½ | 48.3 | 1.65 | 2.77 | 3.68 | 5.08 |
1.95 | 3.1 | 4.13 | 5.51 | |||
50 | 2 | 60.3 | 1.65 | 2.77 | 3.91 | 5.54 |
2.44 | 4.01 | 5.54 | 7.63 | |||
65 | 2½ | 73.0 | 2.11 | 3.05 | 5.16 | 7.01 |
3.77 | 5.36 | 8.81 | 11.64 | |||
80 | 3 | 88.9 | 2.11 | 3.05 | 5.49 | 7.62 |
4.60 | 6.59 | 11.52 | 15.59 | |||
90 | 3½ | 101.6 | 2.11 | 3.05 | 5.74 | 8.08 |
5.29 | 7.55 | 13.84 | 19.01 | |||
100 | 4 | 114.3 | 2.11 | 3.05 | 6.02 | 8.56 |
5.96 | 8.52 | 16.40 | 22.77 | |||
125 | 5 | 141.3 | 2.77 | 3.40 | 6.55 | 9.53 |
9.67 | 11.82 | 22.20 | 31.59 | |||
150 | 6 | 168.3 | 2.77 | 3.40 | 7.11 | 10.97 |
11.55 | 14.13 | 28.83 | 43.42 | |||
200 | 8 | 219.1 | 2.77 | 3.76 | 8.18 | 12.70 |
15.09 | 20.37 | 43.39 | 65.95 | |||
250 | 10 | 273.1 | 3.40 | 4.19 | 9.27 | 12.70 |
23.08 | 28.34 | 61.52 | 83.19 | |||
300 | 12 | 323.9 | 3.96 | 4.57 | 9.52 | 12.70 |
31.89 | 36.73 | 75.32 | 99.43 | |||
350 | 14 | 355.6 | 3.96 | 4.78 | ||
35.06 | 42.14 | |||||
400 | 16 | 406.4 | 4.19 | 4.78 | ||
42.41 | 48.26 | |||||
450 | 18 | 457.2 | 4.19 | 4.78 | ||
47.77 | 54.36 | |||||
500 | 20 | 508.0 | 4.78 | 5.54 | ||
60.46 | 70.00 | |||||
550 | 22 | 558.8 | 4.78 | 5.54 | ||
66.57 | 77.06 | |||||
600 | 24 | 609.6 | 5.54 | 6.35 | ||
84.16 | 96.37 | |||||
Usually, the standard length of SS904L stainless steel pipe is 6m or 12m, and the length can also be customized according to customer needs. This flexible length selection can reduce material waste and meet the actual installation needs of different engineering sites.
The main alloying elements of SS316 stainless steel are chromium (about 16-18%), nickel (about 10-14%), and molybdenum (about 2-3%). Compared with SS904L, its chromium, nickel, and molybdenum contents are all lower. The higher nickel content (23-25%) in SS904L significantly enhances its corrosion resistance in reducing environments; More molybdenum content (6-8%) greatly enhances the resistance to chloride ions; SS316 is relatively weak in these two aspects. In addition, SS904L also contains a certain amount of copper (1-2%), which further enhances its corrosion resistance to non oxidizing acids such as sulfuric acid and phosphoric acid, while SS316 generally does not contain copper elements.
In terms of corrosion resistance, SS904L stainless steel pipe is significantly better than SS316. In reducing acid environments such as dilute sulfuric acid and phosphoric acid, SS904L can maintain good stability due to its special chemical composition, while SS316 has a relatively fast corrosion rate. In environments containing chloride ions, such as seawater, saltwater, etc., SS904L exhibits more outstanding resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking. Although SS316 also has a certain resistance to chloride ion corrosion, its corrosion resistance is far inferior to SS904L in harsh chloride environments. In an oxidizing acid environment, the performance of SS316 is acceptable, but SS904L has a more stable oxide film on its surface due to its higher chromium content, and its corrosion resistance in oxidizing acids is also superior.
In terms of mechanical performance, the tensile strength and yield strength of SS904L are slightly higher than those of SS316, which gives SS904L an advantage in withstanding larger pressures and loads. SS904L also has good toughness and can maintain good performance at low temperatures, while SS316 has relatively weaker toughness at low temperatures. However, in general ambient temperature application environments, the difference in mechanical properties between the two is not significant for most conventional applications and can meet basic usage requirements.
Due to the higher proportion of precious metal elements such as nickel and molybdenum in SS904L, and its relatively complex production process, its cost is significantly higher than that of SS316. This may make SS316 more cost-effective in some cost sensitive and relatively mild corrosive environments; However, in situations where corrosion conditions are harsh and material performance requirements are extremely high, the long-term benefits brought by the high performance of SS904L stainless steel pipe can often compensate for its higher costs.
Chemical Industry
Marine Engineering
Energy and Environmental Protection
Food and Pharmaceutical Industry
Aerospace Industry
Medical Equipment
In summary, SS904L stainless steel pipe plays an important role in many industries due to its excellent material properties, rich size specifications, significant advantages over SS316, and wide range of applications. Whether facing extreme corrosive chemical environments or demanding material performance requirements in fields such as marine engineering, energy and environmental protection, SS904L stainless steel pipe can provide reliable solutions and are the ideal choice for high-performance and long-life pipe applications.
