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Grade 904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content. This high alloy stainless steel has added copper to improve its resistance to strong reducing acids, such as sulphuric acid. The steel is also resistant to stress corrosion cracking and crevice corrosion.
Grade 904L stainless steel is non-magnetic, and offers excellent formability, toughness and weldability. Grade 904L contains high amounts of expensive ingredients, such as molybdenum and nickel. Today, most of the applications that employ grade 904L are replaced by low-cost duplex stainless steel 2205.
Grade 904L stainless steels have excellent resistance to warm seawater and chloride attack. The high resistance of grade 904L against stress corrosion cracking is due to the presence of high amounts of nickel in its composition. Moreover, the addition of copper to these grades develops resistance to sulphuric acid and other reducing agents in both aggressive and mild conditions.
The corrosion resistance of grade 904L is intermediate between super austenitic grades, with 6% molybdenum content, and standard 316L austenitic grades. Grade 904L is less resistant than grades 304L and 310L, which are free of molybdenum. This steel grade needs to be solution treated following cold working, to achieve maximum stress corrosion cracking resistance under critical environments.
Key Features
Non-magnetic
Stronger corrosion properties than Type 316L and 317L
Good resistance to sulphuric, phosphoric and acetic acids
High resistance to crevice and stress corrosion cracking
Excellent formability and weldability
Chemical Composition
C
Mn
Si
P
S
Cr
Mo
Ni
Cu
0.02
2.00
1.0
0.045
0.035
19.0-230
4.0-5.0
23.0-280
1.0 - 2.0
Typical Applications
Cooling equipment for seawater
Chemical processing of sulphuric, phosphoric and acetic acids
Heat exchangers
Condenser tubes
Gas washing
Control and instrumentation
Oil and gas industry
Pharmaceutical production
Wiring in electrostatic precipitators
Available Stock Sizes
Number
Thickness
Size
1
2.0
1219*2438mm
2
2.5
1219*2438mm
3
3.0
1219*2438mm | 1500*6000mm
4
4.0
1500*6000mm
5
5.0
1500*6000mm
6
6.0
1500*6000mm
7
8.0
1500*6000mm | 1800/2000mm width
8
10.0
1500*6000mm | 1800/2000mm width
9
12.0
1500*6000mm | 1800/2000mm width
10
14.0
1500*6000mm | 1800/2000mm width
11
16.0
1500*6000mm | 1800/2000mm width
12
18.0
1500*6000mm
13
20.0
1500*6000mm
14
22.0
1500*6000mm
15
24.0
1500*6000mm
16
26.0
1500*6000mm
17
28.0
1500*6000mm
18
30.0
1500*6000mm
Our Processing Services
Service
Thickness Range
Platform Size
Laser Cutting
0.4 - 30.0mm
2000*8000mm
Plasma Cutting
10 - 80.0mm
2000*10000mm
Bending
within 30mm
2m 6m 10m length
Surface Process
within 12mm
HL 8K PVC Cover
Our company operates a large stainless steel processing center covering 6000 square meters, equipped with laser cutting, water cutting, hot rolling mill, punching, embossing, large shear bending, and dry casting straightening capabilities. We provide customers with high quality, high efficiency stainless steel material processing and distribution services.
About Our Company
We specialize in the production and sales of superalloy, nickel base alloy, corrosion resistant alloy, precision alloy, cobalt-based alloy special alloy steel and special super austenitic stainless steel, duplex stainless steel. Our product range includes round steel, forgings, steel pipes, steel plates, precision steel belts, flanges, pipe fittings, and fasteners.
All materials are produced and tested in strict accordance with ASTM/ASME, GB, JIS and other international standards. We maintain extensive inventory of nickel base alloy, high temperature alloy spot round steel, tube billets, and imported high temperature alloy and nickel base alloy steel plates in various specifications.
Our facilities include vacuum induction furnace, semi-vacuum medium frequency induction furnace, middle and high temperature heat treatment furnace, electroslag remelting furnace, free forging hammers, hot rolling cold rolling steel pipe equipment, precision steel strip cold rolling machines, annealing furnaces, and round bar hot rolling cold drawing machines.
Quality assurance is supported by direct reading spectrometer, spectrophotometer, chemical analysis laboratory, mechanical performance laboratory with universal testing machine and hardness testing machine, metallographic laboratory, and ultrasonic nondestructive testing equipment.
Product Gallery
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2012
Total Annual:
500,000,000-800,000,000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Company Overview ：
The company has an indoor warehouse of 5000 square meters and an open warehouse of 4000 square meters, which can fully meet the temporary turnover and phased storage of customers' steel pipe reservation.
The subordinate processing plant has 6 sets of medium frequency h... Company Overview ：
The company has an indoor warehouse of 5000 square meters and an open warehouse of 4000 square meters, which can fully meet the temporary turnover and phased storage of customers' steel pipe reservation.
The subordinate processing plant has 6 sets of medium frequency h...
