904L Stainless Steel Tube

Fushun Metal is manufacturer of 904L seamless or welded stainless steel tube pipe in china. We produce 904L tube with seamless(OD 12-377mm;WT 1-30mm) and welded(OD 10-2000mm;WT 1-40mm).

Stainless Seamless Fluid Pipe Quality Control

1. Raw materials pipe blank quality classification: high quality, medium, economical
2. Raw materials inspection after receive in factory
3. After pickled, tube will be grinded careful to less defect
4. Multiple cold drawn/rolled process for precision dimension
5. Standard heat-treated of continuous annealed/solution for better property, intergranular corrosion
6. Full Inspection: ET, UT, Hydraulic Test, Penetration Test, Grinded, Sand Blast, Print Making

*Besides bleow, we can supply comfortable price with equivalents quality for you! Welcome contact us.

We also can supply other kinds of:

• Seamless Stainless Steel Pipe & Tube
• Welded Stainless Steel Pipe & Tube
• U Type Stainless Steel Pipe & Tube
• Coil Type Stainless Steel Pipe & Tube(Max 300meter), seamless or welded
• Annealed Pickled AP Stainless Steel Pipe & Tube (Ra ≤5μm)
• Bright Annealed BA Stainless Steel Pipe & Tube (Ra ≤8μm)
• Mechanical Polished MP Stainless Steel Pipe & Tube (Ra ≤8μm)
• Electro Polished EP Stainless Steel Pipe & Tube (Ra ≤25μm)
• Sanitary Stainless Steel Pipe & Tube
• Capilllary Stainless Steel Pipe & Tube
• Instrument Stainless Steel Pipe & Tube

Specification

Steel Grade	904L
Standard
OD range	Seamless:12-377mm Welded:10-2000mm
WT range	Seamless:1-30mm Welded:1-40mm
Length Range	4-9meter; Random Length; Fixed Length
Forming	Hot finished; Cold Rolled; Cold Drawn; ERW welded
Heat-treat	Solution
Surface	Acid Pickled; Polished
Inspection	Chemical; Tensile; Hardness; UT; Eddy Current
Package	Steel rope or wooden case
MOQ	1 tons
Delivery Time	10-30 days
Trade Item	FOB CIF CFR PPU PPD

alloy 904L tubing (UNS N08904) for use in applications that require moderate to high corrosion resistance. Alloy 904L is a low carbon high alloy austenitic stainless steel, originally developed to resist corrosion in dilute sulfuric acid. Because of the combination of chromium, nickel, molybdenum and copper, this grade has greatly improved resistance to strong reducing acids, particularly sulfuric acid. Alloy 904L tubing is also extremely resistant to chloride attack from both pitting/crevice corrosion and stress corrosion cracking. Alloy 904L is non-magnetic in all conditions, possesses amazing toughness, and has good formability and weldability.

Because of these properties, one can find alloy 904L tube in many applications. These range from utility scrubber assemblies to acid and fertilizer production equipment, pulp and paper processing, seawater cooling facilities. Used in processes containing sulfuric or phosphoric acids, 904L displays its excellent resistance to corrosion from those acids. The paper, gas, pharmaceutical and chemical industries also use 904L for its resistance and use to 400-450 degrees C. Alloy 904L tubing can be welded, machined, heat treated, annealed, hardened and cold worked for many purposes.

UNS NO8904, commonly known as 904L, is a low carbon high alloy austenitic stainless steel which is widely used in applications where the corrosion properties of AISI 316L and AISI 317L are not adequate.

The addition of copper to this grade gives it corrosion resistant properties superior to the conventional chrome nickel stainless steels, in particular to sulphuric, phosphoric and acetic acids. However, there is limited use with hydrochloric acids. It also has a high resistance to pitting in chloride solutions, a high resistance to both crevice and stress corrosion cracking. Alloy 904L performs better than other austenitic stainless steels due to the higher alloying of nickel and molybdenum.

The grade is non-magnetic in all conditions and has excellent formability and weldability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures.

The high chromium content promotes and maintains a passive film which protects the material in many corrosive environments.904L has a greater resistance to precipitation of ferrite and sigma phases on cooling and welding than other stainless steels containing molybdenum such as 316L and 317L. There is no risk of intercrystalline corrosion on cooling or welding due to the low carbon content. Its maximum service temperature is at 450°C.

This grade is particularly useful in control and instrumentation tubing applications where 316 and 317L are not suitable.

904L stainless steel combines molybdenum and copper with iron for tremendously increased resistance to reducing acids like sulphuric acid. It stands up extremely well to chlorides in the environment for low pitting and crevice corrosion, as well as stress corrosion cracking.

904L Stainless Steel Pipes and Tubes Product Range  904L Stainless Steel Pipes and Tubes Specifications: ASTM A/ASME SA 269/677 904L Stainless Steel Pipes and Tubes Sizes (Seamless): 1/2″ NB – 8″ NB 904L Stainless Steel Pipes and Tubes Sizes (ERW): 1/2″ NB – 24″ NB 904L Stainless Steel Pipes and Tubes Sizes (EFW): 6″ NB – 100″ NB

904L Stainless Steel Pipes and Tubes Wall Thickness available: Schedule 5S – Schedule XXS (heavier on request) » 904L Stainless Steel Pipes and Tubes Other Materials Testing:

»904L Stainless Steel Pipes and Tubes Dimensions:  All Pipes is manufactured and inspected/tested to the relevant standards including ASTM, ASME and API etc. 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.

Applications

904L stainless steel is widely used in the chemical, pharmaceutical, oil and gas industries. Typical applications include tanks, valves, heat exchangers, flanges and manifolds. The addition of copper to the composition of 904L stainless steel aids its suitability for components such as tanks and other products used in handling sulphuric and phosphoric acid.

Quality Standard

ASTM A182 Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings, and Valves and Parts

EN 10088 part3 stainless steel

Available tube product forms

Straight

Coiled

Seamless

Typical Applications

Seawater cooling equipment

Chemical processing for sulphuric, phosphoric and acetic acids

Gas washing

Condenser tubes

Control and instrumentation

Heat exchangers

Typical manufacturing specifications

ASTM A213

ASTM A269

ASTM A312

BS EN 10216 pt.5

Also individual customer specifications.

Industries predominantly using this grade

Chemical processing

Oil and gas

Pharmaceutical

Technical Data

Mechanical Properties

Temper	Annealed
Tensile Rm	71	ksi (min)
Tensile Rm	490	MPa (min)
R.p. 0.2% Yield	32	ksi (min)
R.p. 0.2% Yield	220	MPa (min)
Elongation (2” or 4D gl)	35	% (min)

Physical Properties (Room Temperature)

Specific Heat (0-100°C)	450	J.kg-1.°K-1
Thermal Conductivity	11.5	W.m -1.°K-1
Thermal Expansion	15.8	μm/μm/°C
Modulus Elasticity	190	GPa
Electrical Resistivity	9.52	μohm/cm
Density	7.95	g/cm3

Chemical Composition Of SS 904L Pipes & SS 904L Tubes:

Steel Grade	C	Si	Mn	P	S	Cr	Ni	Mo	Cu	N
904L	0.02 max	1.0 max	2.0 max	0.040 max	0.030 max	19.0-23.0	23.0-28.0	4.0-5.0	1.0-2.0	0.10 max

Mechanical properties Of SS 904L Pipes & SS 904L Tubes:

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 Of Stainless Steel 904L Pipes & Stainless Steel 904L Tubes:

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 specifications

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.

Corrosion Resistance

Where a level of resistance to pitting corrosion better than 316 is required 904L stainless steel may be suitable. With its high nickel content at 25% it offers improved resistance to chloride stress corrosion cracking compared to other austenitic grades such as 304.

Welding

904L stainless steel can be welded using common fusion and resistance methods. A more highly alloyed filler is recommended to give the optimum corrosion properties in the weld. We recommend you contact your welding consumables supplier who should provide you full assistance and information on welding 904L stainless steel.

Material	Alloy 904L 1.4539 N08904 X1NiCrMoCu25-20-5
Alloy 904l Tubing Standards	ASTM B/ASME SB674 / SB677, ASTM A312/ ASME SA312
Standard Specification for UNS N08904 Tubes	ASTM B677 UNS N08904, ASTM B673 UNS N08904, ASTM B674 UNS N08904
Seamless Tube Size	3.35 mm OD To 101.6 mm OD
Welded Tube Size	6.35 mm OD To 152 mm OD
Swg & Bwg	10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
Schedule	SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
AISI 904l Tube wall thickness	0.020″ –0.220″, (special wall thicknesses available)
Manufacturing Specifications	ASTM A312 ASTM A213 ASTM A269 BS EN 10216 pt.5 As per customer’s specifications.
Length	Single Random, Double Random, Standard & Cut length
Finish	Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
904L Steel Pipe Form	Straight, Coiled, Square Pipes/ Tubes, Rectangular Pipe/ Tubes, Coiled Tubes, Round Pipes/ Tubes, “U” Shape for heat exchangers, Hydraulic Tubes, Pan Cake Coils, Straight or ‘U’ bent Tubes, Hollow, LSAW Tubes Etc.
904l Stainless Tube Type	Seamless, ERW, EFW, Welded, Fabricated
End	Plain End, Beveled End, Treaded
Marking	All Stainless Steel 904L tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
Application	Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger
Value Added Service	Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc.
Specialize in	904L Stainless Steel Capillary Tube & Other Odd Size 904L Stainless Steel Heat Exchanger & Condenser Tubes
Top 10 Manufacturer of 904L Tubes	Posco Korea, VDM Germany, Tubacex, Nippon Steel Corporation, Sumitomo Japan, Indian Mills, Walsin, SP Metal, RONSCO, BAOSTEEL, JISCO, TISCO
Test Certificate	Manufacturer Test Certificate Laboratory Test Certificate from Govt. Approved Lab. Under Third Party Inspection
Manufacturers of 904L Stainless Steel Tubes & Tubing	Sumitomo Metals, Japan Nippon Steel Corporation, Japan Kobe Special Tube, Japan Sanyo Special Steel, Japan Tubacex Tubos Inoxidables S.A., Spain Schoeller Bleckmann, Austria Seah Steel Corporation, Korea

904L Stainless Steel Seamless Tubes Surface Finish

Surface Finish		Internal Surface(ID)		Exterbal Surface(OD)
		Roughness Average(RA)		Roughness Average(RA)
		μ inch	μm	μ inch	μm
AP	Annealed & Pickled	Not defined	Not defined	40 or Not defined	1.0 or Not defined
BA	Beight Annealed	40,32,25,20	1.0,0.8,0.6,0.5	32	0.8
MP	Mechanical Polish	40,32,25,20	1.0,0.8,0.6,0.5	32	0.8
EP	Electro Polish	15,10,7,5	0.38,0.25,0.20;0.13	32	0.8