N08904/904L Stainless Steel Pipe Made of Super Austenitic

• Type: Seamless
• Technique: Cold Drawn
• Material: Stainless Steel
• Surface Treatment: Antiseptical
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Model NO.: 904L series
• Delivery Time: Depend on Quantity
• Transport Package: Standard Export Package or as Required
• Origin: Mainland China
• HS Code: 7304240000
• Production Capacity: 1000 Tons/Month

Product Description

Quick Details


Standard: ASTM, AISI, DIN, EN, GB, JIS
Place of Origin: China (Mainland)
Model Number: N08904/904L Stainless Steel pipe
Type: Seamless
Steel Grade: N08904/904L
Application: Marine applications
Certification: BV, SGS, ISO
Thickness: 1mm-40mm
Outer Diameter: 6mm-660mm
Free sample: avaliable
Delivery: short
Best service: after sales service
Stock: yes
Name: Super Austenitic Stainless Steel N08904/904L steel pipe
Note: we can also do other materials


Packaging & Delivery
Packaging Details:Delivery Detail:

Standard export seaworthy package or as customer required for Super Austenitic Stainless Steel N08904/904L steel pipe

7-20days

 
Super Austenitic Stainless Steel N08904/904L steel pipe
Product Description
 
904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid. It is also highly resistant to chloride attack - both pitting / crevice corrosion and stress corrosion cracking.
 
This grade is non-magnetic in all conditions and has excellent weldability and formability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures.
 
904L does have very substantial contents of the high cost ingredients nickel and molybdenum. Many of the applications in which this grade has previously performed well can now be fulfilled at lower cost by duplex stainless steel 2205 (S31803 or S32205), so it is used less commonly than in the past.
 
Key Properties
These properties are specified for flat rolled product (plate, sheet and coil) in ASTM B625. Similar but not necessarily identical properties are specified for other products such as pipe, tube and bar in their respective specifications.
 
Chemical Composition

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	Cu
904L	min. max.	- 0.020	- 2.00	- 1.00	- 0.045	- 0.035	19.0 23.0	4.0 5.0	23.0 28.0	1.0 2.0

 
Mechanical Properties

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell B (HR B)	Brinell (HB)
904L	490	220	35	70-90 typical	-
Rockwell Hardness value range is typical only; other values are specified limits.

 
Physical Properties

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (µm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Elec Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	At 20°C	At 500°C
904L	8000	200	15	-	-	13	-	500	850

 
Grade Specification Comparison

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
		BS	En	No	Name
904L	N08904	904S13	-	1.4539	X1NiCrMoCuN25-20-5	2562	-
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

 
Possible Alternative Grades

Grade	Why it might be chosen instead of 904L
316L	A lower cost alternative, but with much lower corrosion resistance.
6Mo	A higher resistance to pitting and crevice corrosion resistance is needed.
2205	A very similar corrosion resistance, with the 2205 having higher mechanical strength, and at a lower cost to 904L. (2205 not suitable for temperatures above 300°C.)
Super duplex	Higher corrosion resistance is needed, together with a higher strength than 904L.

 
Applications
1.Processing plant for sulphuric, phosphoric and acetic acids
2.Pulp and paper processing
3.Components in gas scrubbing plants
4.Seawater cooling equipment
5.Oil refinery components
6.Wires in electrostatic precipitators