1.4539 904L N08904 DIN125A Flat Washers

• Customization: Available
• Type: Flat Gasket
• Material: 1.45≃9 , 904L , Uns N08904
• Model NO.: DIN125A-904L-M20
• Combination Washer Structure: A Type
• Combination Washer Packaging: All Inclusive
• Spring Washer Type: Standard
• Marking: Customized Head Mark
• Price for The Size: DIN125A M16
• Certificates: En10204-3.1b
• Packing: Small Box
• Transport Package: CTN First, Then in Pallet
• Specification: DIN125/9021/SAE/USS
• Trademark: HT
• Origin: Jiangsu, China
• HS Code: 7318220090
• Production Capacity: 100 Tons Per Month

Product Description

Our Advantages

We are leader supplier of 904L flat washer / 1.4539 nut /UNS N08904 hex bolt
We have rich project management experience

Trustworthy supplier--We use real material always!
Good price--We sell in competitive price always!
Delivery time--We can complete urgent order in 4 weeks always!
Good Service--Our professional sales have more than 18 years rich experience ,who masters in technics,mechanical properties,exporting policy,controling shipping cost!

Customized Head Mark of each parts
We are washer bank,we have rich types with different grade flat washers

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Product Parameters

Composition

The table below provides the compositional ranges of grade 904L stainless steels:

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	Cu
904L	min. max.	- 0.02	- 2	- 1	- 0.045	- 0.035	19 23	4 5	23 28	1 2

Mechanical Properties

The typical mechanical properties of grade 904L stainless steels are given in the table below:

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	36	70-90 typical	150

Corrosion Resistance

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 to nitric acid 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.

Applications

Some of the major applications of grade 904L stainless steels include:

• Wiring in electrostatic precipitators
• Oil refinery components
• Seawater cooling devices
• Gas scrubbing plants
• Pulp and paper processing industries
• Acetic, phosphoric and sulphuric acid processing plants

Product Description