UNS N08904 Stainless Steel 904L Pipe

N08904 super austenitic high alloy steel is mainly used in harsh acidic media and performs best in pure phosphoric acid. It has good corrosion resistance to pitting and crevice corrosion, intergranular corrosion, stress corrosion cracking and general corrosion. sex.

standard:ASTM

Surface :1. Galvanized 2. Black and Color Painting

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introduction

N08904 is a high-alloy austenitic stainless steel pipe with low carbon content and excellent corrosion resistance. It has good corrosion resistance against dilute sulfuric acid. At the same time, it has a high chromium content and sufficient nickel content. The addition of copper makes it highly acid-resistant, especially highly resistant to chloride gap corrosion and stress corrosion cracking, and is less prone to corrosion spots and cracks. , the resistance to pitting corrosion is slightly better than other steel types. In addition, N08904 stainless steel pipe has good processability and weldability and can be used in pressure vessels.
The physical properties of 904L stainless steel pipe are worth noting: the density is 8.0kg/dm3, the melting point is unknown, the specific heat capacity is kg/(kg.k) at 0~100℃, and the thermal conductivity is w at 100℃ and 500℃ respectively. /(m.k), the linear expansion coefficient is 10-6/k at 0~100℃ and 0~539℃ respectively, the resistivity (20℃) is Ω.mm2/m, and the longitudinal elastic modulus (20℃) is GPa , and N08904 stainless steel round tube is non-magnetic.
UNS N08904 Cold Drawn Pipes are suitable for various environments with harsh corrosive conditions. They have good activation-passivation transition capabilities and excellent corrosion resistance. It has good corrosion resistance in non-oxidizing acids such as H2SO4, CH3COOH, HCOOH, and H3PO4, and has good pitting corrosion resistance in neutral chlorine-containing media. It also has good resistance to crevice corrosion and stress corrosion. performance. It is suitable for various concentrations of H2SO4 below 70°C. It can withstand any concentration and temperature of CH3COOH under normal pressure and has good corrosion resistance in mixed acids of HCOOH and CH3COOH.

Technical Data

Range : 6NB to 1200NB

Outer Diameter : 1/8" NPS to 12" NPS

Thickness : 0.6 mm to 12.7 mm

Schedules : SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.

Length : Single Random, Double Random & Cut Length

Specifications : ASTM B677 / ASTM SB677
Types : Round, Square, Rectangle, Hydraulic, Honed Tubes

Stainless Steel UNS N08904 Pipes Equivalent Grades

Grade		904L
UNS No		N08904
Old British	BS	904S13
Old British	En	X1NiCrMoCu25-20-5
Euronorm	No	1.4539
Euronorm	Name	–
Swedish SS		–
Japanese JIS		SUS 890L

company advantage

Why buy 904L SS pipe from gnee
Gnee is the leading stockist, distributor and supplier of 904L SS Pipe in China. With over 20 years of experience, we have an in-depth understanding of the steel industry. We have extensive experience supplying to all major industries worldwide.

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