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What is 18/8 Stainless Steel Pipe?

‌18/8 stainless steel‌ refers to stainless steel containing 18% chromium and 8% nickel. This stainless steel is also called 304 stainless steel. However, it also has three other identifications and names: 06Cr19Ni10, 304, and SUS304. 06Cr19Ni10 generally indicates national standard production, 304 generally indicates American ASTM standard production, and SUS304 indicates Japanese standard production.

 

SUS304 stainless steel characteristics:
‌Corrosion resistance‌: It has good chemical corrosion resistance, especially in oxidizing acids.
‌Mechanical properties‌: It has high tensile strength and yield strength, suitable for various processing and forming operations.
‌Processing performance‌: It is easy to cold work and heat treat, suitable for manufacturing various products, such as plates, tubes, wires, strips, etc.

 

SUS304 & SS 304 Chemical Composition

Temperature Range

Steel Grade

SUS304

SS 304

C ≤

0.08

0.07

Si ≤

1.00

0.75

Mn ≤

2.00

2.00

P ≤

0.045

0.045

S ≤

0.030

0.03

Cr

18.00-20.00

17.5-19.5

Ni

8.00-10.50

8.0-10.5

 

SUS304 Physical Properties

 

Density(g/cm3)

Melting point (℃)

Specific heat (J/kg·℃)

Electrical resistivity (μΩ·m) (20℃)

Thermal expansion (10-6/K)

Thermal conductivity (W/m·K)

 

SUS304 Material Physical Properties ≤

7.93

1,400-1,450

460-502

0.73

16.3 (20-100℃)

 

17.8 (20-300℃)

 

18.4 (20-500℃)

16.8 (100℃)

 

SS 304 Material Physical Properties

7.93 g/cm3

1398-1454 ℃

500 J/(Kg·K) at 0-100℃

0.73 μΩ·m (20℃)

17.2 (0-100℃)

 

17.8 (0-300℃

 

18.4 (0-500℃)

16.3 (100 ℃)

 

304 stainless steel application areas
Due to its excellent comprehensive performance, it is widely used in the following fields:
‌Kitchenware and tableware‌: Due to its corrosion resistance and aesthetics, it is often used to manufacture kitchenware and tableware.
‌Architecture and decoration‌: Used to make railings, furniture, etc. due to its beauty and corrosion resistance.
‌Medical equipment‌: Often used in the manufacture of medical equipment due to its non-toxicity and corrosion resistance.

304 stainless steel application areas

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